Vibration Generated Due To Pile Driving In Water And Soil
|
|
- Rosaline Holland
- 6 years ago
- Views:
Transcription
1 Abstract Vibration Generated Due To Pile Driving In Water And Soil Samir M. Abdel-Rahman Samy Abdel-Fattah M. A. Helal Associate Professor Assistant Researcher Professor Mechanical & Electrical Research Institute, National Water Research Center, Delta Barrage, P.O , Egypt. Implementation of construction projects involve various sources of construction vibrations such as pile driving, dynamic compaction, blasting and operating heavy equipment. Accurate and reliable determination of dynamic effects of pile driving are very important for proper design, construction and safety of neighbour structures. These sources generate elastic waves in soil which may adversely affect surrounding buildings. The effect of construction vibrations on surrounding buildings, sensitive devices and people in the urban environment is a significant consideration in obtaining projects approvals from appropriate agencies and authorities. The dynamic effect of construction vibrations on adjacent and remote structures depends on soil deposits at a site and susceptibility ratings of structures. It is important to assess the dynamic effect before the beginning of construction activities and at the time of construction. Therefore monitoring construction vibrations have to be started prior to the beginning of construction works at a site and be continued during construction to provide the safety and serviceability of sound and vulnerable structures. Three different areas were used to study dynamic effect due to pile driving: water, loosy soil and silty soil. Vibration characteristics under different conditions was determined and the best parameters for evaluating construction vibration was defined. Vibration generated from impact hammer machine and vibratory hammer machine is of high dangerous level; however, vibration level decrease with increase distance from the source due to material damping. It was found that vibration associated with pile driving in water is higher than that due to pile driving in soil. Also, the metallic structures are excited easily and dynamically more sensitive than concrete structures due to pile driving. Vibration generated during sheet pile driving is higher than that during drawing sheet piles. The research points out the importance of doing frequency analysis prior to such great projects and works to control and minimize its dynamic effect. 1. Introduction Sources of construction vibrations generate compression, shear and Rayleigh waves[1,2]. Rayleigh waves have the largest practical interest for design engineers because building foundations are placed near the ground surface. In addition, Rayleigh waves contain roughly 7 % of the total vibration energy and become predominant over other wave types at comparatively small distances from the vibration source. For example, pile driving from depths between 4 and 1 m will generate Rayleigh waves within.4 to 3 m of the pile, depending on the propagation velocities of Rayleigh and compression waves [3]. Soil vibrations are mostly vertical near the source of vertical impact loads, but as distance increases, vertical and horizontal soil vibrations become similar in magnitudes, and, for some locations at the ground surface, the amplitude of horizontal vibrations might be up to three times greater than that of vertical vibrations. The proximity of the frequency of horizontal soil vibrations 1
2 to one of the building's natural frequencies may generate the conditions of resonance in that building. Moreover, vertical ground vibrations can cause dangerous structural settlements [4,5]. Construction works for great engineering projects including sheet piles and concrete pile driving that use heavy impact and vibratory equipment that generate vibration of transient, random and periodic characteristics. These vibrations of high amplitudes cause fatigue and damage of the nearby structures. Field work at site of constructing a Bridge Mouse and a Navigation Lock of Tawfiki Canal on Dammietta Branch at Delta Barrage Area. Sources of construction vibration have effect ranges from serious disturbances of working conditions for sensitive devices and people to visible structural damage. It may harmfully affect surrounding buildings, generate elastic waves that affect surrounding structures as a result of its propagation through the soil. These waves are damage to structures and it may lead to failure. It is important to estimate the dynamic effect before the beginning of construction activities, and during construction period and should be continued until finishing construction works[6]. These waves are transmitted outward from the source of the pile driving and gradually are attenuated with distance. The attenuation occurs because, with increasing distance from the source, a greater and greater mass of the soil must be affected by the given input of energy. The amplitude of a Rayleigh wave, decreases with distance from the wave source according to equation [1]. The movement of the soil particles involves overcoming some frictional resistance, and a portion of the energy is lost in frictional damping. The attenuation of waves, therefore, is due to geometric damping and frictional damping [3]. A = A r r e α ( r r ) where: A is the amplitude of the Rayleigh wave; A is the amplitude of the Rayleigh wave at the source; r is the distance from the source to the point at which A is measured; r is the radius of a spherical source; and is the damping coefficient. Vibration associated with sheet and concrete pile driving works for project of construction a bridge and a navigation lock on Tawfiki Canal in Kanater area and their effects on hydraulic and nearby structures are monitored and recorded during pile driving. Vibration measurements were done at different conditions and different locations including soil area, water area, on the metallic bridge of delta barrage structure, and on delta barrage structure to predict vibration characteristics when moving closer to residential buildings. 2. Vibration Results during Driving in Soil and Water 2.1 Pile Driving in Soil The levels of vibration are measured during pile driving machine works on soil at seventeen locations by distance from (at the source) to 5 meter on 11 locations every 5 meter apart. Vibration was monitored on the old Delta barrage during pile driving to study the effect of pile driving on safety of this historical structure, where this structure was located at 14 m from pile driving machine. The levels of vibration measured in terms of acceleration (mm/sec 2 ). Results of vibration measured, as shown in Table (1), show that the maximum level of vibration in terms of acceleration mm/sec 2 are reached to mm/sec 2 at the pile driving machine, 2765 mm/sec 2 at distance 5 m, 1945 mm/sec 2 at distance 1 m, 1619 mm/sec 2 at distance 15 m, 1465 mm/sec 2 at distance 2 m, 1137 mm/sec 2 at distance 25 m, mm/sec 2 at distance 3 m, mm/sec 2 at distance 35 m, mm/sec 2 at distance 4 m, mm/sec 2 at distance 45 m, [1] 2
3 mm/sec 2 at distance 5 m. However, the vibration levels decrease to 38 mm/sec 2 at distance 14 m. From above analysis, the level of vibration is in the danger range until 25 meter from pile driving machine according to Boyle [7]. So, the structures which in the range of 3 meter from the machine pile driving are subjected to failure and damage. Table 1 Vibration levels (mm/sec2) measured at different distances (m) from the pile driving machine in soil medium m 5 m 1 m 15 m 2 m 25 m 3 m 35 m 4 m 45 m 5 m Vibratory motion due to pile driving consists of two principal sources including mechanism of pile driving and pile driving machine. Mechanism of pile driving depends on weight of the ram and its speed ( 3 blow/min.) and generates transient wave of at.5 Hz measured in all spectra. The.5 Hz frequency is in the seismic range and may coincide with one of the natural frequencies of the nearby structures and cause damage and failure to these structures. On the other hand, pile driving machine generates periodic wave depending on speed ( 15 rpm = 25 Hz) of the machine. Due to these two sources, a complex wave describing a distinctive motion of dominant frequency 24 Hz and its harmonics containing the frequencies of the two sources where the amplitude of vibration increases However, both amplitude and exciting frequencies attenuate by distance from the source, as shown in Figure 1, during pile driving at soft soil. Exciting frequencies are dominant at 24 Hz and its harmonics at high amplitude at the site of pile driving and decays by distance from the source where the level of vibration decreases and exciting frequencies damped completely. 2.2 Pile Driving in Water The level of vibration measured in terms of acceleration (mm/sec 2 ) in the horizontal direction (shear) was obtained to determine the limits for safety of structures. The levels of vibration were measured on three different sites during pile driving water and far from these sites by distances from 1 to 5 meter. Location 1 at a structure on the West bank of Tawfiki canal bridge at distance from 15 to 3 meter from pile driving source, location 2 on Tawfiki canal bridge at distance 1 meter, and locations 3, at a structure in the west side of Tawfiki canal bridge and pile driving machine far from it by distance from 35 to 5 meter. Measurements, as shown in Table 2 show that the maximum level of vibration is reached to 6128 mm/sec 2 at distance 1 m, 3887 mm/sec 2 at distance 15 m, 255 mm/sec 2 at distance 2 m, 1543 mm/sec 2 at distance 25 m, 1151 mm/sec 2 at distance 3 m, 959 mm/sec 2 at distance 35 m, mm/sec 2 at distance 4 m, 711 mm/sec 2 at distance 45 m, and 54 mm/sec 2 at distance 5 m. From measurements it is obvious that the effect of concrete pile as driving in water on residential 3
4 neighbor objects is in the danger range until 3 meter from driving machine according to Boyle [7], and near to danger after 35 meter where it is approach to 1 m/sec 2. So, the structures which in the range of 35 meter from the machine pile driving are subjected to failure and damage. Vibratory motion due to pile driving consists of two principal sources depending on weight of the ram and its speed ( 3 blow/min.) and generating transient wave at.5 Hz. Also, pile driving machine generates periodic wave depending on its speed (25 Hz). A complex wave is formed containing the frequencies of the two sources where the amplitude of vibration increases. From analysis above and as shown in Figure 2, it is clear that the vibration associated with pile driving in water is higher than in soil. This is due to that pile driving in water where the bed of the Tawfiki Canal contains rocks, and stones of high resistance to pile driving leading to high vibration. Vibration generated in the site of pile driving in water is three times that generated in the site of pile driving in soil. On the other hand, damping of vibration was found to be higher in water than in soil. The structures whether hydraulic or residential are dynamically safe up to 35 m from pile driving in water and they are safe up to 25 m from pile driving in soft soil. However, the residential structures those are at distance up to 4 m from pile driving should be monitored carefully and study methods of their need for additional support and foundations. Vibration Characteristics as driving in Soil and Water 7 Acceleration (mm/sec2) water Soil Distance (meter) Figure 1 Dynamic analysis at three locations during pile driving in soil Figure2 Comparison between the Level of Vibration during Pile Driving at Soil and Water area Table 2 Vibration levels history (mm/sec2) measured at different distances (m) from the pile driving machine in water medium 1 m 15 m 2 m 25 m 3 m 35 m 4 m 45 m 5 m
5 3. Pile Vibration Measured on Metallic and Concrete Structures Measurements were taken in the horizontal and vertical directions in terms of vibration displacement (µm) and vibration acceleration (mm/sec 2 ). Measurements were taken at two locations on the metallic bridge of delta barrage structure locations (1) and on the Delta Barrage structure locations (2). The distance between the source and these locations is 115 meter. Where, location 1 is at upstream of Delta Barrage structure at 11 m from the vibrator machine, location 2 on front of Delta Barrage structure at 125 m from the vibrator machine, location 3 on the metallic Bridge crossing the Delta Barrage structure at 14 m from the vibrator machine, and location 4 on downstream of the Delta Barrage structure. Measurements, as shown in Figure 3, show that the levels of vibration in terms of acceleration were very small and within the safe limits for the structure. However, a peak measurement occurred at location 1 on the metallic bridge of Delta Barrage in both horizontal and vertical directions and reached of value 343mm/sec 2. Also, the levels of vibration in terms of displacement are in range of 6 µm to 2 µm and this levels are within the safe limits for the structure except one measurement occurred at location 1 on the metallic bridge of Delta Barrage structure reaches to 748 µm (danger level) in the vertical direction according to Richart [8] limit for safety of structures, and that is due to another sources in the project area like hydraulic or traffic loads. Finally, from above analysis the levels of vibration due to sheet pile driving in terms of acceleration and displacement are within the safe limits for the Delta Barrage structure which is far from the vibrator by 11 m distance. However, sheet pile driving generate high level of vibrations in terms of displacement, danger to structure according to Richart [8] limit for safety of structures, at location 1 on the metallic bridge of Delta Barrage structure at 14 meter from the vibrator machine. It is concluded that the metallic structures are excited easily and dynamically affected more than concrete structures due to pile driving. 4 Vertical Acceleration (mm/s 2 ) at Delta Barrage Structure and Mettalic Structure 8 Vertical Displacement (um) at Delta Barrage Structure and Mettalic Structure Acceleration (mm/s 2 ) Displacement (um) Location 1 (Mettalic Structure) Location 2 (Concrete Structure) Location 1 (Mettalic Structure) Location 2 (Concrete Structure) Figure 3 Overall vibration levels at two locations at the navigation west side Dynamic analysis was done at the Delta Barrage structure at locations 1&2 in terms of rms. acceleration as shown in Figure 4. The results show that the vibration characteristics due to driving at metallic bridge (location 1) is different than that at delta barrage structure (location 2). No clear exciting frequency measured at the delta Barrage structure, where some exciting frequencies of high amplitudes were measured on the metallic bridge in the order of 24 Hz and its harmonics. The.5 Hz exciting frequency is measured more clear on the metallic structure and is danger to these structures. The average level of vibration signal 5 mm/sec 2 at location 1 and is 2 mm/sec 2 at location 2. So, the sheet pile driving works produce periodic vibratory signal which is completely 5
6 absorbed by the Delta Barrage structure during passing through the medium, however, the metallic structures in the area amplify the vibration signal and induce exciting frequencies of high level. Metallic structure (location 1) Delta barrage structure (location 2) Figure 4 Dynamic analysis at the Delta barrage and Metallic Structure 4. Vibration Measured during Driving and Drawing Sheet piles Measurements were taken in the horizontal and vertical directions in terms of vibration displacement (um), beside the Tawfiki canal bridge during driving and drawing a sheet pile as shown in Figure 5 at four locations while driving a sheet pile, and at three locations while drawing a sheet pile. The distance between each location and the other is 5 meter length. 4.1 In case of driving a sheet pile Measurements were taken in the horizontal direction in terms of displacement vibration (um). Measurements show that the levels of vibration were varied in the range of 815 um to 345 um at 5 meter from vibrator source, in the range of 43 um to 485 um at 1 meter, in the range of 52 um to 196 um at 15 meter, and in the range of 88 um to 141 um at 2 meter. Results of measurements, as shown in Figure 6, show that the level of vibration decreases with increasing the distance from the vibrator source. Also, the level of vibration at the beginning of driving the sheet pile is starting with high amplitude until the half of the sheet pile and then decreases as the sheet pile goes down to the soil. This is due to soil layer type where the top layer is more hardly than the bottom and needs more driving power to penetrate the sheet pile through the soil. Vibration Displacement in the horizontal direction during Driving a sheet pilel at different locations Displacement (um) Distance from vibrator source (m) Figure 5 Driving a Sheet Pile Figure 6 Displacement at different locations while driving a sheet pile 6
7 4.2 In case of drawing a sheet pile Measurements show that the level of vibration were in the range of 462 um to 54 um at 5 meter from the vibrator source, in the range of 124 um to 19 um at 1 meter, and in the range of 133 um to 281 um at 15 meter. Results of measurements, as shown in Figure 7, show that the level of vibration decreases as increasing the distance from the vibrator source. Also, the level of vibration at the beginning of drawing the sheet pile is starting with high amplitude and decreases as the sheet pile goes up from the soil where the resistance of the soil to the movement of the sheet pile decreases. 4.3 Comparison between Driving and Drawing Sheet Piles By making a comparison between driving and drawing a sheet pile, as shown in Figure 8, it is apparent that the level of vibration at driving a sheet pile is higher than the level of vibration at drawing a sheet pile. Finally, Vibration levels measured at the Tawfiki Canal at different locations in terms of displacement (um) during driving a sheet pile show that displacement that produce from the vibrator is in the danger range until 1 meter from the vibrator source because it is reached to 345 um after 5 meter from the vibrator machine, and 485 um after 1 meter from the vibrator machine and it goes to decrease as we go far from the vibration source. Also, Vibration level measured during drawing a sheet pile show that the displacement that produce from the vibrator is reached to 54 um after 5 meter from the vibrator source and it goes to decrease as we far from the vibration source. Finally, the level of vibration is in danger range until 1 meter from the vibrator machine during pile driving a sheet pile and it is in danger range until 5 meter from the vibrator machine during drawing the sheet pile. Vibration level measured during Driving and Drawing the sheet pile at 5 meter from the vibrator s ource Vibration Displacement in the horizontal direction during Drawing a sheet pilel at different locations 35 1 D is p la c e m e n t ( u m ) Sheet pile driving Sheet pile drawing Displacem ent (um ) Distance from vibrator source (m) Figure 7 Vibration displacement at different locations while drawing a sheet pile Figure 8 Comparison between driving and drawing a sheet pile at one location 7
8 5. Conclusions Vibration generated from pile driving machines is of high dangerous level; however, vibration level decrease with increase distance from the source due to material damping. Pile driving machines produce exciting frequency in the seismic range and can cause damage and failure to the nearby structures. The vibration associated with pile driving in water is higher than that due to pile driving in hard soil and soft soil. This is due to that pile driving in water, where the bed of the Tawfiki Canal contain rocks, and stones of high resistance to pile driving leading to high vibration. The safe vibration limits for the nearby structures to the pile driving machines are determined as 35 m for concrete pile driving in water and 2 m for concrete pile driving in soil. The steel structures are excited easily and dynamically more sensitive to pile driving works than concrete structures. Vibration generated during sheet pile driving is higher than that during drawing sheet piles. The level of vibration is in danger range until 1 meter during sheet pile driving, where it is in danger range until 5 meter during drawing the sheet pile. 6. References [1] Svinkin M. R., "Analyzing Man-Made Vibrations, Diagnostics and Monitoring", Proc. of the 3rd Int. Conf. on Case Histories in Geotechnical Engineering, Prakash, Editor, Rolla, Missouri, Vol. 1, pp , [2] Svinkin M. R., "Numerical Methods with Experimental Soil Response in Predicting Vibrations from Dynamic Sources", Proc. of the Ninth Int. Conf. of International Association for Computer Methods and Advances in Geo-mechanics, Wuhan, China, J.-X. Yuan, Editor, A.A. Balkema Publishers, Vol. 3, pp [3] Tschebotariff, G. P., "Foundation, Relating and Earth Structures" 2nd ed., McGraw- Hill Book Co., Inc. New York, N. Y., [4] Barkan, D. D., Dynamics of Foundations and Bases, McGraw Hill Co., New York, [5] Dowding, C. H "Construction Vibration", Prentice-Hall, Inc., [6] Abdel-Rahman, S. M., Vibration Associated with Pile Driving and its Effects on Nearby Historical Structures, International Modal analysis Conference (IMAC), Ca, USA, 22. [7] Boyle, S. "The Effect of Piling Operations in the Vicinity of Computing Systems", Ground Engineering, 199, June, [8] Richart, F.E., Hall, J.R. and Woods, R.D., Vibrations of Soils and Foundations Prentice- Hall, Inc., Englewood Cliffs, New Jersey, 414 P,
VIBRATION ASSOCIATED WITH PILE DRIVING AND ITS EFFECTS ON NEARBY HISTORICAL STRUCTURES
VIBRATION ASSOCIATED WITH PILE DRIVING AND ITS EFFECTS ON NEARBY HISTORICAL STRUCTURES S.M.Abdel-Rahman, Ph.D Mechanical & Electrical Research Institute, National Water Research Center, Delta Barrage,
More informationEffect of Vibratory Compaction Equipment on Cement- Mortar Lined Steel Water Pipe
Effect of Vibratory Compaction Equipment on Cement- Mortar Lined Steel Water Pipe Shruti Gupta Yuxia Hu School of Civil & Resource Engineering Roshun Paurobally School of Mechanical & Chemical Engineering
More informationSoil and Structure Vibrations from Construction and Industrial Sources
Missouri University of Science and Technology Scholars' Mine International Conference on Case Histories in Geotechnical Engineering (2008) - Sixth International Conference on Case Histories in Geotechnical
More informationAdvanced Materials Research, :
Provided by the author(s) and University College Dublin Library in accordance with publisher policies. Please cite the published version when available. Title Investigation of the Rail-Induced Vibrations
More informationEnvironmental vibration resonances of precise bearing platform built on soft soils
Environmental vibration resonances of precise bearing platform built on soft soils Ping Xu 1, Xiaohui Yuan 2 1 Department of Transportation Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
More informationPEAK ATTENUATION RULE AND ENVIRONMENTAL ASSESSMENT OF GROUND VIBRATION DUE TO DYNAMIC COMPACTION
PEAK ATTENUATION RULE AND ENVIRONMENTAL ASSESSMENT OF GROUND VIBRATION DUE TO DYNAMIC COMPACTION NI Yongjun 1, TENG Xinli 1, ZHANG Xuefeng 2, WEI Qingchao 1 and LIU Xingang 1 1 Ph.D, Associate professor,
More information339. Massarsch, K.R and Fellenius, B.H., Ground vibrations from pile and sheet pile driving. Part 1 Building Damage. Proceedings of the DFI-
339. Massarsch, K.R and Fellenius, B.H., 2014. Ground vibrations from pile and sheet pile driving. Part 1 Building Damage. Proceedings of the DFI- EFFC International Conference on Piling and Deep Foundations,
More informationDIAGNOSIS PUMP PROBLEMS USING VIBRATION ANALYSIS
DIAGNOSIS PUMP PROBLEMS USING VIBRATION ANALYSIS Sami A. A. El-Shaikh Mechanical & Electrical Research Institute, National Water Research Center, Ministry of Water Resources & Irrigation, Delta Barrage,
More informationControl of Earthquake Resistant High Rise Steel Frame Structures
Control of Earthquake Resistant High Rise Steel Frame Structures A K Datta a,*, S Sivaprasad a, a CSIR-National Metallurgical Laboratory, Jamshedpur-831007, India e-mail: akd@nmlindia.org P Prasad b b
More informationAnalysis of Seismic Waves Generated by Blasting Operations and their Response on Buildings
Analysis of Seismic Waves Generated by Blasting Operations and their Response on Buildings S. Ziaran, M. Musil, M. Cekan, O. Chlebo Abstract The paper analyzes the response of buildings and industrially
More informationVIBRATION ISOLATION PERFORMANCE FOR INDUSTRIAL METAL FORMING PRESSES
VIBRATION ISOLATION PERFORMANCE FOR INDUSTRIAL METAL FORMING PRESSES CN Himmel JEAcoustics, Austin, Texas, USA 1 INTRODUCTION Automobile manufacturers produce vehicle body parts using large metal forming
More informationBEHAVIOUR OF SOIL-STRUCTURE SYSTEM WITH TUNED-MASS DAMPERS DURING NEAR-SOURCE EARTHQUAKES
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 24 Paper No. 1353 BEHAVIOUR OF SOIL-STRUCTURE SYSTEM WITH TUNED-MASS DAMPERS DURING NEAR-SOURCE EARTHQUAKES Nawawi CHOUW
More informationUpdate LADOTD Policy on Pile Driving Vibration Management (09-1GT) MINGJIANG TAO, PH.D., P.E. WORCESTER POLYTECHNIC INSTITUTE JANUARY, 2011
Update LADOTD Policy on Pile Driving Vibration Management (09-1GT) MINGJIANG TAO, PH.D., P.E. WORCESTER POLYTECHNIC INSTITUTE JANUARY, 2011 Presentation Outline Research Objectives Methodology Results
More informationDynamic Design of the Foundation of Reciprocating Machines for Offshore Installations in Persian Gulf
Dynamic Design of the Foundation of Reciprocating Machines for Offshore Installations in Persian Gulf Mohammad AHANGAR Univrsity Of Tehran, Mohammad_ahangar_84@yahoo.com Hesam Sharifian JAZE Univrsity
More informationDynamic interaction of adjacent tall building structures on deep foundations
Earthquake Resistant Engineering Structures VIII 173 Dynamic interaction of adjacent tall building structures on deep foundations M. A. Rahgozar & M. Ghandil Department of Civil Engineering, University
More informationSEISMIC DESIGN OF STRUCTURE
SEISMIC DESIGN OF STRUCTURE PART I TERMINOLOGY EXPLANATION Chapter 1 Earthquake Faults Epicenter Focal Depth Focus Focal Distance Epicenter Distance Tectonic Earthquake Volcanic Earthquake Collapse Earthquake
More informationEffective improvement depth for ground treated with rapid impact compaction
Scientific Research and Essays Vol. 5(18), pp. 2686-2693, 18 September, 2010 Available online at http://www.academicjournals.org/sre ISSN 1992-2248 2010 Academic Journals Full Length Research Paper Effective
More informationSEISMIC SOIL-PILE GROUP INTERACTION ANALYSIS OF A BATTERED PILE GROUP
4 th International Conference on Earthquake Geotechnical Engineering June 25-28, 27 Paper No. 1733 SEISMIC SOIL-PILE GROUP INTERACTION ANALYSIS OF A BATTERED PILE GROUP Nan DENG 1, Richard KULESZA 2 and
More informationTwo-dimensional finite element analysis of influence of plasticity on the seismic soil micropiles structure interaction
Technical Journal of Engineering and Applied Sciences Available online at www.tjeas.com 2013 TJEAS Journal-2013-3-13/1301-1305 ISSN 2051-0853 2013 TJEAS Two-dimensional finite element analysis of influence
More informationStiffness characteristics of a polycal wire rope isolators
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Stiffness characteristics of a polycal wire rope isolators To cite this article: Aaqib Hussain and P S Balaji 2018 IOP Conf. Ser.:
More informationTransportation and Construction Vibration Guidance Manual
Transportation and Construction Vibration Guidance Manual California Department of Transportation Division of Environmental Analysis Environmental Engineering Hazardous Waste, Air, Noise, Paleontology
More informationSEISMIC PERFORMANCE OF SUPER TALL BUILDINGS
160 SEISMIC PERFORMANCE OF SUPER TALL BUILDINGS Nilupa Herath, Priyan Mendis, Tuan Ngo, Nicholas Haritos The Department of Civil and Environmental Engineering University of Melbourne Vic 3010, Australia
More informationSeismic Amplification of Double-Sided Geosynthetic-Reinforced Soil Retaining Walls
6 th International Conference on Earthquake Geotechnical Engineering 1-4 November 2015 Christchurch, New Zealand Seismic Amplification of Double-Sided Geosynthetic-Reinforced Soil Retaining Walls W. A.
More informationINVESTIGATION ON TECHNIQUES TO CONTROL STRUCTURAL DAMAGE DUE TO BLASTING ACTIVITIES
INVESTIGATION ON TECHNIQUES TO CONTROL STRUCTURAL DAMAGE DUE TO BLASTING ACTIVITIES P.V.R Ranasinghe Department of Civil and Environmental Engineering, University of Ruhuna vranasinghe145@gmail.com H.P.P
More informationPumping System Vibration
Pumping System Vibration Understanding the Fundamentals Eric J. Olson Mechanical Solutions, Inc. (MSI) ejo@mechsol.com Agenda 1. Vibration testing and analysis fundamentals 2. Structural and acoustic resonance
More informationJigar K. Sevalia 1, Sarthi B. Bhavsar 2, Sunil H. Kukadiya 3, Yogesh D. Rathod 4, Gaurang A. Parmar 5
48-96 www.ijera.com Vol., Issue 6, November- December, pp.77-784 Dynamic Analysis Of Structure For Looms Industry - A Parametric Study Jigar K. Sevalia, Sarthi B. Bhavsar, Sunil H. Kukadiya, Yogesh D.
More informationCONSIDERATIONS ON THE SEISMIC DESIGN OF HIGH CONCRETE FACE ROCKFILL DAMS (CFRDs) Bayardo Materón - Gabriel Fernandez
CONSIDERATIONS ON THE SEISMIC DESIGN OF HIGH CONCRETE FACE ROCKFILL DAMS (CFRDs) Bayardo Materón - Gabriel Fernandez CONCRETE FACE ROCKFILL DAMS CFRDs- HAVE INCREASED IN HEIGHT TO NEAR 300M. RECENT SEISMIC
More informationFULL BASE ISOLATION FOR EARTHQUAKE PROTECTION BY HELICAL SPRINGS AND VISCODAMPERS
ISET GOLDEN JUBILEE SYMPOSIUM Indian Society of Earthquake Technology Department of Earthquake Engineering Building IIT Roorkee, Roorkee October 20-21, 2012 Paper No. E004 FULL BASE ISOLATION FOR EARTHQUAKE
More informationRESPONSE OF GROUND SUPPORTED CYLINDRICAL TANKS TO HARMONIC LOADING
RESPONSE OF GROUND SUPPORTED CYLINDRICAL TANKS TO HARMONIC LOADING Asha Joseph 1 and Glory Joseph 2 1 Research Scholar, Cochin University of Science and Technology, Kerala 2 Associate Professor, Cochin
More informationPOWER PRESSES. Vibration Control, Mounting and Levelling of: Power Presses APPLICATIONS. Presses come in various categories including:
APPLICATIONS AP-Industrial-Power Presses-3a Vibration Control, Mounting and Levelling of: POWER PRESSES Power Presses Presses come in various categories including: Mechanical Friction Press Brake Hydraulic
More informationVALLIAMMAI ENGINEERING COLLEGE DEPARTMENT OF CIVIL ENGINEERING SUBJECT CODE: CE6701 SUBJECT NAME: STRUCTURAL DYNAMICS AND EARTHQUAKE ENGINEERING YEAR : IV SEM : VII QUESTION BANK (As per Anna University
More informationTURBO GENERATOR MACHINE FOUNDATIONS SUBJECTED TO EARTHQUAKE LOADINGS
TURBO GENERATOR MACHINE FOUNDATIONS SUBJECTED TO EARTHQUAKE LOADINGS P.St. Fleischer 1 and P.G. Trombik 2 1 Trombik Engineers Ltd. Zurich, Switzerland, Email: p.fleischer@trombik.ch 2 Trombik Engineers
More information1688. Study on the dynamic response of subway tunnel by viaduct collapsing vibration and the protective measures of reducing vibration
1688. Study on the dynamic response of subway tunnel by viaduct collapsing vibration and the protective measures of reducing vibration Huabing Zhao 1, Yuan Long 2, Chong Ji 3, Xinghua Li 4, Mingshou Zhong
More informationBEHAVIOUR OF SHALLOW FOUNDATIONS OVER SOFT CLAY DAMPERS
IGC 2009, Guntur, INDIA BEHAVIOUR OF SHALLOW FOUNDATIONS OVER SOFT CLAY DAMPERS Sanjib Singha Research Scholar, Department of Civil Engineering, National Institute of Technology, Silchar 788010, India,
More informationEXPERIMENTAL AND ANALYTICAL INVESTIGATION OF DYNAMIC BEHAVIOUR OF 16 TH STOREY RC BUILDING
EXPERIMENTAL AND ANALYTICAL INVESTIGATION OF DYNAMIC BEHAVIOUR OF 16 TH STOREY RC BUILDING Lidija KRSTEVSKA 1, Tina KAROVSKA 2 and Ljubomir TASHKOV 3 ABSTRACT The paper deals with the results obtained
More informationEarthquake Response Analysis of Spherical Tanks with Seismic Isolation
Available online at www.sciencedirect.com Procedia Engineering 14 (2011) 1879 1886 The Twelfth East Asia-Pacific Conference on Structural Engineering and Construction Earthquake Response Analysis of Spherical
More informationAbstract. Introduction
The influence of soil-structure interaction on the overall damping of structures with high damping O. Chuanromanee, R.D. Hanson, R.D. Woods Department of Civil and Environmental Engineering, University
More informationMAURER Vibration Isolation
MAURER Vibration Isolation State of the art of sustainable solutions ELI-NP, Bucharest, Romania; information property of IFIN-HH/ELI-NP forces in motion Experience in Innovation The MAURER Group is a leading
More informationDynamic Analysis of Large Steel Tanks
Transactions of the 17 th International Conference on Structural Mechanics in Reactor Technology (SMiRT 17) Prague, Czech Republic, August 17 22, 2003 Paper # K14-1 Dynamic Analysis of Large Steel Tanks
More informationDesign Provisions for Earthquake Resistance of Structures. The Standards Institution of Israel
Israeli Standard SI 413 June 1995 Amendment No. 5 December 2013 Design Provisions for Earthquake Resistance of Structures The Standards Institution of Israel 42 Haim Levanon, Tel Aviv 69977, tel. 03-6465154,
More informationImplementation of this Special Provision requires a complete understanding of the following documents:
VIRGINIA DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION FOR Quality Assurance/Quality Control (QA/QC) for the Construction of Deep Foundation Systems for Design-Build and PPTA Contracts November 10, 2009
More informationDynamic Characteristics on Composite Foundation with CFG Pile
J. Civil Eng. Architect. Res. Vol. 1, No., 1, pp. 1-19 Received: June 1, 1; Published: August 5, 1 Journal of Civil Engineering and Architecture Research Dynamic Characteristics on Composite Foundation
More informationSeismic devices for bridges
Earthquake Resistant Engineering Structures VI 95 Seismic devices for bridges D. Mestrovic & G. Grebenar Faculty of Civil Engineering, University of Zagreb, Croatia Abstract The paper summarizes earthquake
More informationEARTHQUAKE GEOTECHNICAL ENGINEERING
UME School, Fall Term 2017 1 ST WEEK Basic Concepts of Wave Propagation in Elastic Continua. 1D Linear and Linear-Equivalent Ground Response Analyses. Introduction to 1D Non-Linear and 2D Linear Ground
More informationLong-Span Truss Structures for Low-Vibration Environments
2829 Long-Span Truss Structures for Low-Vibration Environments Authors: Ning Tang, Hal Amick, and Michael Gendreau, Colin Gordon & Associates, Brisbane, CA INTRODUCTION With the advancement of science
More informationIJREISS Volume2, Issue 6(June 2012) ISSN: SEISMIC ANALYSIS OF CUBIC BURIED TANKS REGARDING SOIL STRUCTURE INTERACTION
SEISMIC ANALYSIS OF CUBIC BURIED TANKS REGARDING SOIL STRUCTURE INTERACTION Yasin Moradi PhD. Student, School of Civil Engineering, College of Engineering, University of Tehran, Iran Prof. Khosrow Bargi
More information2.15 Tokamak Seismic Analysis
2.15 Tokamak Seismic Analysis 2.15.1 Introduction 1 2.15.2 Input Conditions 3 2.15.2.1 Design Response Spectra 3 2.15.2.2 Damping Coefficients 4 2.15.3 Model Overview 4 2.15.4 Main Results Under SL-2 Seismic
More informationSEISMIC STRUCTURE SOIL-STRUCTURE INTERACTION (SSSI) EFFECTS FOR DENSE URBAN AREAS
SEISMIC STRUCTURE SOIL-STRUCTURE INTERACTION (SSSI) EFFECTS FOR DENSE URBAN AREAS Dan M. GHIOCEL 1, Ovidiu BOGDAN 2 and Dan CRETU 3 ABSTRACT The paper presents selected results of an international project
More informationSEISMIC STRUCTURE SOIL-STRUCTURE INTERACTION (SSSI) EFFECTS FOR DENSE URBAN AREAS
SEISMIC STRUCTURE SOIL-STRUCTURE INTERACTION (SSSI) EFFECTS FOR DENSE URBAN AREAS Dan M. GHIOCEL 1, Ovidiu BOGDAN 2 and Dan CRETU 3 ABSTRACT The paper presents selected results of an international project
More informationSeismic Analysis of Multi Storey Building with Flat Slab Resting on Plain and Sloping Ground
Bonfring International Journal of Man Machine Interface, Vol. 4, Special Issue, July 216 2 Seismic Analysis of Multi Storey Building with Flat Slab Resting on Plain and Sloping Ground P. Manjunath and
More informationGround vibration from road construction May 2012
Ground vibration from road construction May 2012 PD Cenek and AJ Sutherland, Opus International Consultants Ltd, Central Laboratories IR McIver, GREENBeing Consulting Engineers New Zealand Transport Agency
More informationANALYTICAL AND EXPERIMENTAL STUDIES ON THE SEISMIC RESPONSE OF BASE ISOLATION SYSTEMS FOR ELECTRIC POWER EQUIPMENT
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, Paper No. 16 ANALYTICAL AND EXPERIMENTAL STUDIES ON THE SEISMIC RESPONSE OF BASE ISOLATION SYSTEMS FOR ELECTRIC POWER
More informationA numerical simulation on the dynamic response of MSE wall with LWA backfill
Numerical Methods in Geotechnical Engineering Hicks, Brinkgreve & Rohe (Eds) 2014 Taylor & Francis Group, London, 978-1-138-00146-6 A numerical simulation on the dynamic response of MSE wall with LWA backfill
More informationA study on the vibration control of an ultra-high performance concrete pedestrian cable stayed bridge
High Performance Structures and Materials V 309 A study on the vibration control of an ultra-high performance concrete pedestrian cable stayed bridge Y. J. Kim, W. J. Chin, E. S. Choi, J. Y. Kang & B.
More informationABSTRACT 1. INTRODUCTION
Seismic response analysis of pile foundations W.D. Liam Finn, G. Wu, T. Thavaraj Department of Civil Engineering, University ofbritish Columbia, Vancouver, British Columbia V6T1Z4, Canada ABSTRACT A method
More informationNonlinear Dynamic Analysis of Base Isolated Reinforced Concrete Building
Nonlinear Dynamic Analysis of Base Isolated Reinforced Concrete Building Anju Agarwal 1, Nirendra Dev 2, Ibadur Rahman 3 Research Scholar, Department of Civil Engineering, Delhi Technological University,
More informationVibrations caused by train traffic and the effect of its mitigation on the quality of living
Vibrations caused by train traffic and the effect of its mitigation on the quality of living T. Auvinen 1 Aalto University, Espoo, Finland ABSTRACT Railway traffic induced vibrations in dwellings often
More informationExperiment on the concrete slab for floor vibration evaluation of deteriorated building
IOP Conference Series: Materials Science and Engineering OPEN ACCESS Experiment on the concrete slab for floor vibration evaluation of deteriorated building To cite this article: S U Hong et al 2014 IOP
More informationA POORLY GRADED SAND COMPACTION CASE STUDY
Proceedings of Softsoils 2014, October, 21-23 rd 2014 A POORLY GRADED SAND COMPACTION CASE STUDY Liu Yu 1, Marcello Djunaidy 2 ABSTRACT: One 350 hectare artificial island using hydraulic dredging sand
More informationAPPLICATION OF THE POWERFUL TMD AS A MEASURE FOR SEISMIC RETROFIT OF OLD BRIDGES
APPLICATION OF THE POWERFUL TMD AS A MEASURE FOR SEISMIC RETROFIT OF OLD BRIDGES Takeyasu SUZUKI 1, Isao KANEKO 2 And Touta KATSUKAWA 3 SUMMARY Authors have developed a seismic control device which can
More informationEffects of Adjacent Building Construction: A Case Study
J. Basic. Appl. Sci. Res., 3(1)370-375, 2013 2013, TextRoad Publication ISSN 2090-4304 Journal of Basic and Applied Scientific Research www.textroad.com Effects of Adjacent Building Construction: A Case
More informationFloating Type Isolation System Using Earthquake Early Warning
Floating Type Isolation System Using Earthquake Early Warning K. Minagawa Saitama Institute of Technology, Saitama S. Fujita Tokyo Denki University, Tokyo G. Tanaka Oiles Corporation, Tochigi H. Simosaka
More informationSoil Densification Using Vibro-Stone Columns Supplemented with Wick Drains
Soil Densification Using Vibro-Stone Columns Supplemented with Wick Drains Thevachandran Shenthan Ph.D. Candidate, Department of Civil, Structural and Environmental Engineering, University at Buffalo Research
More informationPlanning and Growth Management Committee. Chief Building Official and Executive Director, Toronto Building. P:\2007\\Cluster B\BLD\CBO Office\PGM004
STAFF REPORT ACTION REQUIRED Vibrations Caused by Construction Activity Date: May 16, 2007 To: From: Wards: Reference Number: Planning and Growth Management Committee Chief Building Official and Executive
More informationCEL 774 CONSTRUCTION PRACTISES. Concrete: Production. B. Bhattacharjee CIVIL ENGINEERING DEPARTMENT IIT DELHI
CEL 774 CONSTRUCTION PRACTISES Concrete: Production (Compaction ) CIVIL ENGINEERING DEPARTMENT IIT DELHI 1 General Outline Concrete Production. Compaction Need Vibrators Mechanism & Fresh concrete under
More informationVibration control of a building model with base isolation
Proceedings of th International Congress on Acoustics, ICA -7 August, Sydney, Australia Vibration control of a building model with base isolation Helen Wu School of Engineering, Edith Cowan University,
More informationVIBRATION ABSORPTION AND ISOLATION IN DYNAMICALLY LOADED FOUNDATIONS
VIBRATION ABSORPTION AND ISOLATION IN DYNAMICALLY LOADED FOUNDATIONS T. Öztürk 1 and Z. Öztürk 2 1 Assoc. Professor, Dept. of Structural Engineering, Istanbul Technical University, Turkey 2 Assoc. Professor,
More informationProtecting Electrical Distribution. Plant & Support Structures. from Vibrations Caused. by Construction & Operation Activity
TITLE: Working Procedure RECOMMENDED: C. Proulx NO: REV: APPROVED: C. Malone, P.Eng. UDS0022 4 REV. DATE: 2015-06-03 Protecting Electrical Distribution Plant & Support Structures from Vibrations Caused
More informationResearch Article Seismic Earth Pressures of Retaining Wall from Large Shaking Table Tests
Advances in Materials Science and Engineering Volume 215, Article ID 83653, 8 pages http://dx.doi.org/1.1155/215/83653 Research Article Seismic Earth Pressures of Retaining Wall from Large Shaking Table
More informationLoad Bearing Mechanism of Piled Raft Foundation during Earthquake
Proceedings Third UJNR Workshop on Soil-Structure Interaction, March 9-,, Menlo Park, California, USA. Load Bearing Mechanism of Piled Raft during Earthquake Shoichi Nakai a), Hiroyuki Kato a), Riei Ishida
More informationAssessment of buildings response to earthquakes
Earthquake Resistant Engineering Structures VII 73 Assessment of buildings response to earthquakes A. Farah School of Engineering, Laurentian University, Canada Abstract Modern buildings are designed to
More informationAnalysis of a Road Embankment with Pond Ash in an Active Seismic Region
Analysis of a Road Embankment with Pond Ash in an Active Seismic Region Balendra Mouli Marrapu & Ravi Sankar Jakka Indian Institute of Technology Roorkee, India (247667) SUMMARY: Huge quantities of ash
More informationTraffic Vibrations in Buildings
Construction Technology Update No. 39 Traffic Vibrations in Buildings by Osama Hunaidi This Update describes the nature and causes of traffic-induced vibrations in buildings, and discusses possible remedial
More informationModal Analysis as a Tool to Resolve Pump Vibration Issues
Modal Analysis as a Tool to Resolve Pump Vibration Issues John Koch HDR, Bellevue, WA jkoch@hdrinc.com ABSTRACT Vibration spectrum analysis and modal analysis are tools designers and plant staff can use
More informationAdjustable epoxy based vibration damping material for constrained-layer systems
Adjustable epoxy based vibration damping material for constrained-layer systems Lasse Kinnari Oy Noisetek Ab, Aakkulantie 40, 360 Kangasala, Finland, lasse.kinnari@noisetek.fi Vibration damping of mechanical
More informationAnalysis of the Vibration Propagation Induced by Pulling out of Sheet Pile Wall in a Close Neighbourhood of Existing Buildings
Procedia Engineering Volume 143, 2016, Pages 1460 1467 Advances in Transportation Geotechnics 3. The 3rd International Conference on Transportation Geotechnics (ICTG 2016) Analysis of the Vibration Propagation
More informationWIND TURBINES. Vibration Control of: Wind Turbines APPLICATIONS POWER GENERATION - WIND TURBINES
APPLICATIONS AP-Power-Wind Turbines-13a Vibration Control of: WIND TURBINES POWER GENERATION - WIND TURBINES Wind Turbines Wind power is popular. The market for wind turbines is expanding rapidly and with
More informationDesign of bridges with modular expansion joints for prevention of earthquake-induced girder poundings
Design of bridges with modular expansion joints for prevention of earthquake-induced girder poundings Hong Hao 1 and Nawawi Chouw 2 1 School of Civil and Resource Engineering, the University of Western
More informationEvaluation of Soil Liquefaction Potential by Screw Driving Sounding Test in Residential Areas
6 th International Conference on Earthquake Geotechnical Engineering 1-4 November 15 Christchurch, New Zealand Evaluation of Soil Liquefaction Potential by Screw Driving Sounding Test in Residential Areas
More informationDynamic response of interlocking structures due to harmonic ground motions
Dynamic response of interlocking structures due to harmonic ground motions Zhenduo Yan 1 and Nawawi Chouw 2 1. Corresponding author. PhD candidate, Department of Civil and Environmental Engineering, the
More informationShaking Table Model Test of a HWS Tall Building
ctbuh.org/papers Title: Authors: Subjects: Keywords: Shaking Table Model Test of a HWS Tall Building Xilin Lu, Professor, Tongji University Jianbao Li, Lecturer, Tongji University Wensheng Lu, Associate
More informationvulcanhammer.info the website about Vulcan Iron Works Inc. and the pile driving equipment it manufactured Terms and Conditions of Use:
this document downloaded from vulcanhammer.info the website about Vulcan Iron Works Inc. and the pile driving equipment it manufactured Terms and Conditions of Use: All of the information, data and computer
More informationNumerical Simulation of Liquefaction Deformation of Sand Layer around Bucket Foundations under Dynamic Loadings
The Open Ocean Engineering Journal, 2010, 3, 75-81 75 Open Access Numerical Simulation of Liquefaction Deformation of Sand Layer around Bucket Foundations under Dynamic Loadings Chi Li 1,*, Xiaobing Lu
More informationIJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 05, 2016 ISSN (online):
IJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 05, 2016 ISSN (online): 2321-0613 Experimental Investigation of Effect of Tuned Mass Damper in the Structure using Shake
More informationCalculating Stress & Strain from Experimental ODS Data
Calculating Stress & Strain from Experimental ODS Data Brian Schwarz, Shawn Richardson, Mark Richardson Vibrant Technology, Inc. Scotts Valley, CA Click here for the presentation ABSTRACT In this paper
More informationSeismic Behaviour of Multi-Storied RCMRF Buildings Resting on Sloping Ground
Seismic Behaviour of Multi-Storied RCMRF Buildings Resting on Sloping Ground D.J.Misal *, Post Graduate Student, Civil Engineering Department, Dr.D.Y.Patil School of Engg and Tech, Charholi (Bk), Pune,412105,
More informationEffect of plastic hinge, soil nonlinearity and uplift on earthquake energy in structures
Effect of plastic hinge, soil nonlinearity and uplift on earthquake energy in structures M. Sarrafzadeh, E. Lim, X. Qin & N. Chouw Department of Civil and Environmental Engineering, the University of Auckland,
More informationDesign Requirements of Buildings and Good Construction Practices in Seismic Zone
Design Requirements of Buildings and Good Construction Practices in Seismic Zone CII Safety Symposium & Exposition 2015: 11th September 2015: Kolkata Stages of Structural Design Concept Finalisation of
More informationSEISMIC SOIL-STRUCTURE INTERACTION (SSI) EFFECTS FOR A DIFFERENT TYPE OF BUILDINGS IN DENSE URBAN AREA
SEISMIC SOIL-STRUCTURE INTERACTION (SSI) EFFECTS FOR A DIFFERENT TYPE OF BUILDINGS IN DENSE URBAN AREA Ovidiu BOGDAN 1, Dan M. GHIOCEL 2 and Dan CRETU 3 ABSTRACT The paper presents the results of a project
More informationDYNAMIC ANALYSIS OF PILE DRIVING FROM VARIOUS HAMMERING LOCATIONS ALONG PILE SHAFT
4 th International Conference on Earthquake Geotechnical Engineering June 25-28, 27 Paper No. 1754 DYNAMIC ANALYSIS OF PILE DRIVING FROM VARIOUS HAMMERING LOCATIONS ALONG PILE SHAFT Mahmoud. Ghazavi 1,
More informationPerformance of Mechanically Stabilized Earth walls over compressible soils
Performance of Mechanically Stabilized Earth walls over compressible soils R.A. Bloomfield, A.F. Soliman and A. Abraham The Reinforced Earth Company, Vienna, Virginia, USA ABSTRACT: Two projects have recently
More informationDamage states of cut-and-cover tunnels under seismic excitation
6 th International Conference on Earthquake Geotechnical Engineering 1-4 November 2015 Christchurch, New Zealand Damage states of cut-and-cover tunnels under seismic excitation Duhee Park 1, Tae-Hyung
More informationACCELERATED REPLACEMENT OF STEEL PLATE RAILWAY BRIDGES USING MOVING CRANES ON RAILROAD
ACCELERATED REPLACEMENT OF STEEL PLATE RAILWAY BRIDGES USING MOVING CRANES ON RAILROAD Eunsoo choi 1*, Seungmin Gin 1, Chanyeong Jeon 1, Kyuho Jeong 1, Han-Cheol Park 1 1 Department of Civil Engineering,
More informationConstruction Planning, Equipment, and Methods PILES AND PILE-DRIVING EQUIPMENT
CHAPTER Construction Planning, Equipment, and Methods PILES AND PILE-DRIVING EQUIPMENT Sixth Edition A. J. Clark School of Engineering Department of Civil and Environmental Engineering 19 By Dr. Ibrahim
More informationAPRIL 2017 UNDER CONSTRUCTION
APRIL 2017 UNDER CONSTRUCTION Highway construction is a complicated process that involves many tasks. Some of these, by nature, have an impact on nearby residents. To minimize these impacts, the Pennsylvania
More informationPart III Special Topics of Bridges
ENCE717 Bridge Engineering Special Topics of Bridges III Chung C. Fu, Ph.D., P.E. (http: www.best.umd.edu) 1 Part III Special Topics of Bridges 6. Dynamic/Earthquake Analysis (17.0) i. Basics of Bridge
More informationPressure Pulsations and Vibration Measurements in Francis Turbines with and without Freely Rotating Runner Cone Extension
Proceedings of the International Symposium on Current Research in Hydraulic Turbines CRHT VI March 14, 2016, Turbine Testing Lab, Kathmandu University, Dhulikhel, Nepal Paper no. CRHT2016-15 Pressure Pulsations
More informationApplications of. and
Applications of and MoHo s.r.l. c/o VEGA Building Lybra via delle Industrie 17/A 30175 Marghera Venice ITALY tel. +39 041 5094004 e-mail: info@moho.world internet: www.tromino.eu Contents Contents... 2
More informationSEISMIC ISOLATION FOR MEDIUM RISE REINFORCED CONCRETE FRAME BUILDINGS
SEISMIC ISOLATION FOR MEDIUM RISE REINFORCED CONCRETE FRAME BUILDINGS Himat T Solanki*, Consultant, Sarasota, Florida, USA Vishwas R Siddhaye, Emeritus Professor, College of Engineering, Pune, India Gajanan
More informationSTABLE SYSTEMS IN UNSTABLE CONDITIONS: EARTHQUAKE TESTING CONFORM THE IBC
STABLE SYSTEMS IN UNSTABLE CONDITIONS: EARTHQUAKE TESTING CONFORM THE IBC Paul SCHOTEN Eaton Holec The Netherlands holec-info@eaton.com Bob TOWNE Eaton Cutler-Hammer United States of America Mostafa AHMED
More information