Two-dimensional finite element analysis of influence of plasticity on the seismic soil micropiles structure interaction
|
|
- Lorin Wilkinson
- 6 years ago
- Views:
Transcription
1 Technical Journal of Engineering and Applied Sciences Available online at TJEAS Journal / ISSN TJEAS Two-dimensional finite element analysis of influence of plasticity on the seismic soil micropiles structure interaction Mahzad Esmaeili-Falak Young Researchers and Elites Club, East Azarbaijan Science and Research Branch, Islamic Azad University, Tabriz, Iran Corresponding author ABSTRACT: This paper includes a finite element analysis of the influence of soil plasticity on the seismic response of micropiles. Analysis is carried out using a global two-dimensional modeling in the Plaxis code. The soil behavior is described using the Mohr Coulomb and liner elastic criterion. Both the micropiles and the superstructure are modeled as two-dimensional beam elements. Proper boundary conditions are used to ensure waves transmission through the lateral boundaries of the soil mass. Analyses are first conducted for harmonic loadings and then for real earthquake records. They show that plasticity could have a significant influence on the seismic response of the soil micropiles structure systems. This influence depends on the amplitude of the seismic loading and the dominant frequencies of both the input motion and the soil micropiles structure system. Key Words: Plasticity, Elastic, Micropiles, Seismic INTRODUCTION Micropiles were for the first time innovated in Italy in 1950 as a creative method to establish foundation for historic building and comments gradually damaged, especially during World War II. It was an efficient and secure foundation establishment system as a support for structural loadings with minimum required transmission which could be founded in limited places with difficult availability and it also caused existing structure to be tampered minimum. Micropiles are piles with less than 300 mm diameter which can be founded by digging bore, putting in and injecting grout (FHWA, 2000). Special digging and injection methods used in founding micripiles lead to a strong joint between grout and the soil and it causes an increase in loads handling capacity in contact lever of the earth and grout. The injected grout, transfers the applied loading from to the earth in joint point via friction (FHWA, 2000). Microplies are used as controlling factor over the foundation structures damaged because of seismic harms. According to experiences, micropiles present suitable behavior when pressed by seismic loading as a result of their high flexibility. However, sufficient studies, appropriate to real measurements have not been done yet and it is obvious that dynamic behavior of micropiles need to be studied. This situation has lead to numeric analysis such as limited elements in studying micropiles behavior when there is an earthquake. Limited elements software has been used in order to do dynamic analysis-numeric model shows that seismic loading causes reveal that non-liner state of soil must be considered in designing micropiles. The present research studies the influence of soil plasticity on the interaction of structure soil-micropiles under seismic loading in which two forms of loading including harmonic loading and real earth quake records have been used (Federal Highway Administration, 2005). NUMERICAL MODELING OF STRUCTURE-SOIL-MICROPILES INTERACTION Numerical modeling has been carried out for dynamic analysis using Plaxis 2D ver 8.2 which is able to do with the manner plain-strain. The soil behavior is described using a liner elastic model based on Mohr-coulomb criterion. Micropiles are modeled as elastic beam elements. Superstructure is modeled as a system with a linear one
2 degree-of-freedom composed of a column and concentrated mass which is rigidly connected to the cap of micropiles with 1.25m in height. The Mass superstructure equals to 40ton. The cap of Micropile which superstructure is connected also was modeled in form of a concrete foundation with one-meter thickness. Considered Damping is the use of Rayleigh method. In numeric model of the present research, vertical boundaries have been used in the sides of model and horizontal boundary in the bottom of model in order to separate the model from surrounding soil half-extreme environment. In dynamic analysis, absorbing boundaries have is in vertical ones and bed stone placed in the bottom of model. The minimum distance between model side boundaries and micropile is suggested to be 50 times as micropile diameter; as the model measurements have no effects on micropile behavior under side loading further than the mentioned distance. The distance between the bottom of model and micropile has also been suggested to be half length of micropile (Wong, 2004). Regarding to seismic boundary condition, model depth was selected to be 15 m and the length 40m. Spacing between micropiles is 1.20 m. Micropiles diameter 20 cm and their length are 10 m. Figure 1 shows the schematic form of micropile and Figure 2 shows the Two dimensional finite element meshes in Plaxis 2D ver 8.2 Code. RESPONSE IN CASE OF HARMONIC LOADING This analysis is performed on micropile group 2 2 embedded into soil layer in two-dimensional form. Micropiles are connected to a square-shaped cap (2.40 m wide and 1m thick) free from soil contact. And the cap mass are 24Gpa and 14.40ton respectively. Micropiles Spacing is six times as long as their diameter (S=6Dp) and fundamental frequency of soil layer equals to 2.12Hz which is considered equal to harmonic loading frequency. That is why harmonics loading is applied with approximate frequency of fundamental frequency of soil layer and the acceleration on foundation stone will have amplitude of 0.10 g. Figure 1. Schematic form of micropiles Figure 2. Two-dimensional finite element meshes in Plaxis 2D ver8.2 Code. Soils features have been summarized in table one which Reveals a soft soil with internal friction angle φ=300. Cohesion C=17 kpa, dilatancy angle ψ = 0 is the coefficient of the lateral earth pressure at rest unit weight γ=1700kg/m3 and the damping ratio x = 5%. Length of micropiles, diameter, axial stiffness and flexure stiffness are L=10 m, Dp=0.2 m, EAp=629 MN, EIp=434 MN.m2 respectively damping ratio is equal to 5% for the soil and 2% for both the structure and micropiles (Gazetas and Mylonakis, 1998). 1302
3 Table 1. Soil properties E (MPa) Υ γ (kg/m³) K 0 ξ (%) C (kpa) Φ (º) ψ (º) Table 2. Micropiles properties D (m) L (m) EA (MN) EI (MN.m 2 ) ξ (%) Figure 3. Influence of plasticity on the lateral displacement of micropiles cap Figure 3 shows the Influence of plasticity lateral displacement of cap for elastic and elastoplastic models. It can be observed that elastic response is about 120 percent Higher than the Elastoplastic one. It is the result of the influence of plasticity on the Damping of the foundation structure system and the dissipation of energy because of plastic deformation; plasticity also leads to reduces the frequency of the system in comparison with the elastic system (In this form, loading frequency equals to fundamental frequency of elastic soil layer). Figure 4. Influence of plasticity on the axial force and bendingmoment of micropiles 1303
4 Figure 4 interprets curved of influence of plasticity axial force and bending moment of micropiles coursed by input motion. Figure 4 illustrates the envelopes of the axial force and bending moment in the micropiles due to the input motion. Maximum forces in micropiles are obtained in both cases; this form reveals the important role of internal force for the system. Similar observations have been found by Beslimand et al (Benslimane, 2000). It is also observed that soil plasticity results in micropiles internal force degrease. In fact, plasticity decreases the energy transmission towards cap and therefore it leads to a remarkable decrease in internal force which is shown in Tables 3 and 4. Tables 3 and 4 show the increase normalized shearing force and bending moment in normal shearing force and bending moment in piles as well as axial force decrease in elastoplastic form. In other words, for the same still forces, micropiles stand larger cutting force and anchor in plastic soil compared to elastic ones. Table 3. Influence of plasticity on the soil micropiles structure response Maximum acceleration Inertial shear force concentrated mass micropiles cap T a mass (m/s²) st (KN) a cap(m/s²) Elastic Elastoplastic Table 4. Influence of plasticity on the internal force Micropiles Axial force in Shear force in Head micropiles Head micropiles N mass (KN) T cap(kn) Elastic Elastoplastic Inertial bending moment M st (KN.m) Bending moment in head micropiles M st(kn.m) 1. Response to real recorded earthquake motions In this modeling Seismic loading is used as time history of acceleration in the bottom of model analysis, studies are done one time history of acceleration USGS in Apland in In Figure 5, time history of Apland earthquake has been displayed (Alsaleh and Shahrour, 2006; PLAXIS ). Figure 5. Time historical Upland earthquake Figure 6 reveals the effect of plasticity on the speed spectrum of structure- soil micropile system. It is observed that plasticity leads to frequency of elastic system equals to 0.8 Hz where as it equals to 0.75 Hz in elastoplastic systems. So, entering dominant frequency equals to 0.9 Hz which frequency, and dynamic expansion decreases. The results obtained in the present article are according to Alsaleh et al studies (2009) (Alsaleh and Shahrour, 2009; Hunt, 2005). In table 5, the influence of plasticity on structure-soilmicropile response has been revealed. It is observed that elastoplastic acceleration of superstructure (amass) equals to 50 percent of elastic acceleration which shows that plasticity leads to a considerable decrease in system expansion in order to provide necessary resistance. Similar studies were carried out by Alsaleh et al (2009) using in a three-dimensional modeling in the time domain in which similar results were obtained (Alsaleh and Shahrour, 2009). 1304
5 Figure 6. Influence of plasticity on the velocity spectra of the superstructure (Kocaeli earthquake record, Vpeak = 0.40 m/s, E0s= 8 MPa, f1=0.67 Hz) Alsaleh et al (2009). Table 5. Influence of plasticity on the soil micropiles structure response concentrated mass a mass (m/s²) micropiles cap a cap(m/s²) Inertial shear force T st (KN) Elastic Elastoplastic CONCLUSIONS Inertial bending moment M st (KN.m) The present research is a complete two-dimensional analysis of plasticity influence on structure-soil-micropile system. Analyses were conducted for both harmonic loading and recorded earthquake motions. Results of The research have been done show that non-liner behavior of the soil has a considerable effect on seismic response of micropiles and the main effect is on the amplitude of seismic loading and structure-soil-micropile frequency and input motion frequency. It is observable that the response related to elastic is about 120 percent more than elastoplastic and it is a result of energy dissipation caused by plastic deformation; plasticity leads to system hardness decrease in soil micropiles structure system. Finally, soil plasticity results in energy transmission decrease to the cap. REFERENCES FHWA Micropile design and construction guidelines. US Department of Transportation, Federal Highway Administration,Priority Technologies Program, Implementational, manual, Publication No.FHWA - SA Federal Highway Administration Seismic Behavior of Micropiles. Report No. FHWA WA- RD 6041, United States Department of Transportation. Wong JC Seismic behavior of micropiles. M.S. Thesis. Washington State University, Pullman, WA. Gazetas G, Mylonakis G Seismic soil-structure interaction: New evidence and emerging issues. ASCE Special Edition No.75 Geotechnical Earthquake Engineering and Soil Dynamic. Benslimane A Dynamic behavior of micropile systems Subjected to Sinusoidal Ground Motions,Centrifugal Studies. Thesis submitted in partial fulfillment of requirements for the degree of Doctor of philosophy at The Polytechnic University. Alsaleh H, Shahrour I Three dimensional nonlinear finite difference analysis for seismic soil-micropile structure interaction effects of nonlinearity of soil and micropile-soil interface. 4th International Flac Sympsium on Numerical in Geomechanics. Alsaleh H, Shahrour I Influence of soil properties on the seismic soil micropiles structure interaction. Soil Dynamics and Earthquake Engineering Hunt RE Geotechnical engineering investigation handbook. Second Edition. CRC Press Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL P.O. PLAXIS 2D Ver 8.2 Reference Manual. Plaxis by P.O. Box AN Delft The Netherlands
Comparison of geotechnic softwares - Geo FEM, Plaxis, Z-Soil
Comparison of geotechnic softwares - Geo FEM, Plaxis, Z-Soil Comparison du logiciel géotechnique Geo FEM, Plaxis, Z-Soil J. Pruška CTU in Prague FCE Department of Geotechnics, Prague, Czech Republic, Pruska@fsv.cvut.cz
More informationVOL. 11, NO. 16, AUGUST 2016 ISSN ARPN Journal of Engineering and Applied Sciences
COMPARISON OF STABILITY PERFORMANCE BETWEEN CONCRETE PILE AND CLOSED END STEEL PIPE OF SHORT PILED RAFT FOUNDATION SYSTEM FOR REDUCING SETTLEMENT ON PEAT Sajiharjo Marto Suro, Agus Sulaeman and Ismail
More informationModelling of a pile row in a 2D plane strain FE-analysis
Numerical Methods in Geotechnical Engineering Hicks, Brinkgreve & Rohe (Eds) 2014 Taylor & Francis Group, London, 978-1-138-00146-6 Modelling of a pile row in a 2D plane strain FE-analysis J.J.M. Sluis,
More informationFinite Element Study Using FE Code (PLAXIS) on the Geotechnical Behavior of Shell Footings
Journal of Computer Science 2 (1): 104-108, 2006 ISSN 1549-3636 Science Publications Finite Element Study Using FE Code (PLAXIS) on the Geotechnical Behavior of Shell Footings Bujang B.K. Huat and Thamer
More informationDissipative Behaviour of Reinforced-earth Retaining Structures Under Severe Ground Motion
6 th International Conference on Earthquake Geotechnical Engineering 1-4 November 2015 Christchurch, New Zealand Dissipative Behaviour of Reinforced-earth Retaining Structures Under Severe Ground Motion
More informationINTRINSIC SEISMIC PROTECTION OF CANTILEVERED AND ANCHORED RETAINING STRUCTURES
SECED 2015 Conference: Earthquake Risk and Engineering towards a Resilient World 9-10 July 2015, Cambridge UK INTRINSIC SEISMIC PROTECTION OF CANTILEVERED AND ANCHORED RETAINING STRUCTURES Luigi CALLISTO
More informationNumerical Analysis of a Novel Piling Framed Retaining Wall System
The 12 th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG) 1-6 October, 2008 Goa, India Numerical Analysis of a Novel Piling Framed Retaining
More informationPerformance Based Seismic Design of Reinforced Concrete Building
Open Journal of Civil Engineering, 2016, 6, 188-194 Published Online March 2016 in SciRes. http://www.scirp.org/journal/ojce http://dx.doi.org/10.4236/ojce.2016.62017 Performance Based Seismic Design of
More informationPerformance Based Assessment of Dynamic Soil-Structure Interaction Effects on Seismic Response of Building Frames
3 Performance Based Assessment of Dynamic Soil-Structure Interaction Effects on Seismic Response of Building Frames Behzad Fatahi 1, Hamid Reza Tabatabaiefar 2, Bijan Samali 3 1 Lecturer of Geotechnical
More informationUsing EPS Buffers for Diaphragm Walls
Using EPS Buffers for Diaphragm Walls Beshoy M. FAKHRY1, Salem A. AZZAM2, and Sherif S. ABDELSALAM1 1 Graduate Student, the British University in Egypt, beshoy115377@bue.edu.eg 2 Teaching Assistant, the
More informationEffects of Dynamic Soil-Structure Interaction on Inelastic Behaviour of Mid-Rise Moment Resisting Buildings on Soft Soils
Effects of Dynamic Soil-Structure Interaction on Inelastic Behaviour of Mid-Rise Moment Resisting Buildings on Soft Soils Hamid Reza Tabatabaiefar, Bijan Samali, and Behzad Fatahi Centre for Built Infrastructure
More informationInfluence of Orientation of Piles on Seismic Response of Pile Groups
International Journal of Civil Engineering Research. ISSN 2278-3652 Volume 5, Number 3 (2014), pp. 261-268 Research India Publications http://www.ripublication.com/ijcer.htm Influence of Orientation of
More informationParametric Study on Geogrid-Reinforced Track Substructure
IJR International Journal of Railway Vol. 6, No. 2 / June 2013, pp. 59-63 ISSN 1976-9067(Print) ISSN 2288-3010(Online) Parametric Study on Geogrid-Reinforced Track Substructure Jeongho Oh Abstract The
More information[Kouravand Bardpareh* et al., 5(6): July, 2016] ISSN: IC Value: 3.00 Impact Factor: 4.116
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY STUDY ON HORIZONTAL DISPLACEMENT OF RESTRAINED EXCAVATION WALLS BY CANTILEVER RETAINING WALL Siavash Kouravand Bardpareh *1, Ashkan
More informationNPTEL Course GROUND IMPROVEMENT USING MICROPILES
Lecture 22 NPTEL Course GROUND IMPROVEMENT USING MICROPILES Prof. G L Sivakumar Babu Department of Civil Engineering Indian Institute of Science Bangalore 560012 Email: gls@civil.iisc.ernet.in Contents
More informationJSEE. Soil-Structure Interaction Analyses Using Cone Models
JSEE Winter 2009, Vol. 10, No. 4 Soil-Structure Interaction Analyses Using Cone Models Sassan Mohasseb 1 and Bahareh Abdollahi 2 1. Technical Director, SMTEAM GmbH 8706 MEILEN-Switzerland, email: smteam@gmx.ch
More informationCollapse analysis of the Daikai station in Kobe Metropolitan
Collapse analysis of the Daikai station in Kobe Metropolitan David Lourenço Brito Department of Civil Engineering and Architecture, IST, Technical University of Lisbon 1. Introduction Generally, underground
More informationSOIL PRESSURE IN EMBANKMENT STABILIZATIONS
SOIL PRESSURE IN EMBANKMENT STABILIZATIONS Analysis of the 3D shadowing effect of piles Dipl.-Ing. M. Filus Fides DV-Partner GmbH ABSTRACT: Pile checks required by the codes alone are usually not sufficient
More informationEVALUATION OF LAMINATED HOLLOW CIRCULAR ELASTOMERIC RUBBER BEARING
EVALUATION OF LAMINATED HOLLOW CIRCULAR ELASTOMERIC RUBBER BEARING J. Sunaryati 1, Azlan Adnan 2 and M.Z. Ramli 3 1 Dept. of Civil Engineering, Engineering Faculty, Universitas Andalas. Indonesia 2 Professor,
More information3.5 Tier 1 Analysis Overview Seismic Shear Forces
Chapter 3.0 - Screening Phase (Tier ) 3.5 Tier Analysis 3.5. Overview Analyses performed as part of Tier of the Evaluation Process are limited to Quick Checks. Quick Checks shall be used to calculate the
More informationThis point intends to acquaint the reader with some of the basic concepts of the earthquake engineer:
Chapter II. REVIEW OF PREVIOUS RESEARCH II.1. Introduction: The purpose of this chapter is to review first the basic concepts for earthquake engineering. It is not intended to review the basic concepts
More informationAPPROXIMATE ANALYSIS OF PILED RAFT. Rameez Gahlot1, Roshni J John2
APPROXIMATE ANALYSIS OF PILED RAFT Rameez Gahlot1, Roshni J John2 1 PG Student, Dept of Civil Engg, Saraswati College of Engineering, Kharghar-4121, India rameezgahlot@gmail.com.2 Head of Civil Engineering
More informationFagà, Bianco, Bolognini, and Nascimbene 3rd fib International Congress
COMPARISON BETWEEN NUMERICAL AND EXPERIMENTAL CYCLIC RESPONSE OF ALTERNATIVE COLUMN TO FOUNDATION CONNECTIONS OF REINFORCED CONCRETEC PRECAST STRUCTURES Ettore Fagà, Dr, EUCENTRE, Pavia, Italy Lorenzo
More informationDAMAGE ANALYSIS AND SEISMIC DESIGN OF RAILWAY STRUCTURES FOR HYOGOKEN-NANBU (KOBE) EARTHQUAKE
Journal of Japan Association for Earthquake Engineering, Vol.4, No.3 (Special Issue), 2004 DAMAGE ANALYSIS AND SEISMIC DESIGN OF RAILWAY STRUCTURES FOR HYOGOKEN-NANBU (KOBE) EARTHQUAKE Akihiko NISHIMURA
More informationAnalysis of the stability of sheet pile walls using Discontinuity Layout Optimization
Analysis of the stability of sheet pile walls using Discontinuity Layout Optimization S. D. Clarke, C. C. Smith & M. Gilbert The University of Sheffield, UK ABSTRACT: In this paper it is demonstrated that
More informationResearch on the Influence of Infill Walls on Seismic Performance of Masonry Buildings with Bottom Frame-Shear Walls
AMSE JOURNALS-AMSE IIETA publication-7-series: Modelling B; Vol. 8; N ; pp - Submitted Jan. 7; Revised March, 7, Accepted April, 7 Research on the Influence of Infill Walls on Seismic Performance of Masonry
More information2. SAFETY VERIFICATIONS OF SHALLOW FOUNDATIONS Bearing capacity failure
Seismic design of shallow foundations Bearing capacity of soil Pedro Miguel Sereno July 216 ABSTRACT Traditionally the verification on the bearing capacity of shallow foundation in a seismic situation
More informationPERFORMANCE OF MECHANICAL SEISMIC LOAD TRANSMISSION DEVICE BASED ON IMPACT
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 2517 PERFORMANCE OF MECHANICAL SEISMIC LOAD TRANSMISSION DEVICE BASED ON IMPACT Jae Kwan KIM 1, Min Hyuk
More informationDesign Illustrations on the Use of Soil Nails to Upgrade Loose Fill Slopes
Design Illustrations on the Use of Soil Nails to Upgrade Loose Fill Slopes Geotechnical Engineering Office and The Hong Kong Institution of Engineers (Geotechnical Division) November 2013 2 Disclaimer
More informationSingle Piles and Pile Groups
Single Piles and Pile Groups Under Lateral Loading 2nd Edition Lymon C. Reese Academic Chair Emeritus Department of Civil Engineering The University of Texas at Austin William Van Impe Full Professor of
More informationSeismic Assessment of an RC Building Using Pushover Analysis
Engineering, Technology & Applied Science Research Vol. 4, No. 3, 014, 631-635 631 Seismic Assessment of an RC Building Using Pushover Analysis Riza Ainul Hakim ainul7@yahoo.com Mohammed Sohaib Alama sohaib.alama@hotmail.com
More informationNonlinear Finite Element Modeling & Simulation
Full-Scale Structural and Nonstructural Building System Performance during Earthquakes & Post-Earthquake Fire A Joint Venture between Academe, Industry and Government Nonlinear Finite Element Modeling
More informationInteraction between a crusher, a MSE Wall and stockpile at mine in Peru
1388 From Fundamentals to Applications in Geotechnics D. Manzanal and A.O. Sfriso (Eds.) IOS Press, 2015 2015 The authors and IOS Press. All rights reserved. doi:10.3233/978-1-61499-603-3-1388 Interaction
More informationEffect of beam dimensions on structural performance of wide beam-column joints
Effect of beam dimensions on structural performance of wide beam-column joints J.S. Kuang 1) and *Wing Shan Kam 2) 1), 2) Department of Civil and Environmental Engineering, Hong Kong University of Science
More informationResearch on Geotechnical Seismic Isolation System
2014 International Conference on Geological and Civil Engineering IPCBEE vol.62 (2014) (2014) IACSIT Press, Singapore DOI: 10.7763/IPCBEE. 2014. V62. 11 Research on Geotechnical Seismic Isolation System
More informationINTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 2, No 2, 2011
INTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 2, No 2, 2011 Copyright 2010 All rights reserved Integrated Publishing services Research article ISSN 0976 4399 Analysis of Flanged Shear
More informationGeotechnical and SSI Simulations
Geotechnical and SSI Simulations Ahmed Elgamal Jinchi Lu Zhaohui Yang 1 Yuyi Zhang, Joel P. Conte, Zhaohui Yang, Ahmed Elgamal, Jacobo Bielak, and Gabriel Acero, Two- Dimensional Nonlinear Earthquake Response
More informationNumerical study of shear wall behavior coupled with HPFRCC beam and diagonal reinforcements
Engineering Solid Mechanics 4 (206) 53-62 Contents lists available at GrowingScience Engineering Solid Mechanics homepage: www.growingscience.com/esm Numerical study of shear wall behavior coupled with
More informationSEISMIC TIME-HISTORY ANALYSIS AND STRAIN-BASED DESIGN OF CABLE-STAYED BRIDGES. Hans Henrik Lund 1 Robert Mitchell 2
SEISMIC TIME-HISTORY ANALYSIS AND STRAIN-BASED DESIGN OF CABLE-STAYED BRIDGES Hans Henrik Lund 1 Robert Mitchell 2 Abstract Cable-stayed bridges are becoming increasingly popular in North America, with
More informationAPPENDIX A - SIZING OF BRIDGE AND SUPPORT SYSTEM
APPENDIX A - SIZING OF BRIDGE AND SUPPORT SYSTEM Steel Bridge Selection of Type of Steel Bridge Acrow Bridge From the personal communication with Acrow bridges regional office in Colorado (Needham, Randy),
More informationCase study on a deep excavation in Baku: Flame Towers project earth retaining system
Case study on a deep excavation in Baku: Flame Towers project earth retaining system H. A. Afatoglu 1 ENAR Engineers Architects & Consultants, Istanbul, Turkey ABSTRACT Baku Flame Towers Project, consisting
More informationInfluence of unloading soil modulus on horizontal deformation of diaphragm wall
Influence of unloading soil modulus on horizontal deformation of diaphragm wall Hoang Viet NGUYEN 1 and Thi Dieu Chinh LUU 2 1 Lecturer, Soil Mechanics and Foundation Department, National University of
More informationEVALUATION OF THE NEED FOR WEAK BEAM-STRONG COLUMN DESIGN IN DUAL FRAME-WALL STRUCTURES
EVALUATION OF THE NEED FOR WEAK BEAM-STRONG COLUMN DESIGN IN DUAL FRAME-WALL STRUCTURES Rita BENTO And Mário LOPES SUMMARY According to Capacity Design principles, in multi-storey frames it is considered
More informationInterpretation of Danish Chalk Parameters Applicable to Foundation Design
NGM 2016 Reykjavik Proceedings of the 17 th Nordic Geotechnical Meeting Challenges in Nordic Geotechnic 25 th 28 th of May Interpretation of Danish Chalk Parameters Applicable to Foundation Design L. Kellezi
More informationNON-LINEAR FEM ANALYSIS FOR CES SHEAR WALLS
1NCEE Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering July 21-25, 214 Anchorage, Alaska NON-LINEAR FEM ANALYSIS FOR CES SHEAR WALLS S. SUZUKI 1, H. KURAMOTO
More informationNumerical Analysis for High-rise Building Foundation and Further Investigations on Piled Raft Design
ctbuh.org/papers Title: Authors: Subject: Keyword: Numerical Analysis for High-rise Building Foundation and Further Investigations on Piled Raft Design Jinoh Won, Deputy General Manager, Samsung C&T Corporation
More informationNUMERICAL STUDY OF OFFSHORE SKIRTED FOUNDATIONS SUBJECTED TO COMBINED LOADING
NUMERICAL STUDY OF OFFSHORE SKIRTED FOUNDATIONS SUBJECTED TO COMBINED LOADING S.K. NAIK 1, S.M. DASAKA 2, and V.B. CHAUHAN 3 1 Former Post Graduate Student, Department of Civil Engineering, Indian Institute
More informationVibration Generated Due To Pile Driving In Water And Soil
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
More informationSHAKE TABLE TESTING OF BRIDGE REINFORCED CONCRETE COLUMNS UNDER COMBINED ACTIONS
SHAKE TABLE TESTING OF BRIDGE REINFORCED CONCRETE COLUMNS UNDER COMBINED ACTIONS Juan G. Arias Acosta, Graduate Student David H. Sanders, Professor and Project PI University of Nevada, Reno NEESR SG 53737
More informationINTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY
INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY A PATH FOR HORIZING YOUR INNOVATIVE WORK SPECIAL ISSUE FOR NATIONAL LEVEL CONFERENCE "SUSTAINABLE TECHNOLOGIES IN CIVIL
More informationNonlinear Seismic Response Analysis for Hong Kong-Zhuhai-Macau Bridge
Sensors & Transducers, Vol. 175, Issue 7, July 214, pp. 12-11 Sensors & Transducers 214 by IFSA ublishing, S. L. http://www.sensorsportal.com Nonlinear Seismic Response Analysis for Hong Kong-Zhuhai-Macau
More informationNONLINEAR PERFORMANCE OF A TEN-STORY REINFORCED CONCRETE SPECIAL MOMENT RESISTING FRAME (SMRF)
NONLINEAR PERFORMANCE OF A TEN-STORY REINFORCED CONCRETE SPECIAL MOMENT RESISTING FRAME (SMRF) Houssam Mohammad Agha, Li Yingmin, Oday Asal Salih and A ssim Al-Jbori Doctoral Candidate, College of Civil
More informationIn-plane testing of precast concrete wall panels with grouted sleeve
In-plane testing of precast concrete wall panels with grouted sleeve P. Seifi, R.S. Henry & J.M. Ingham Department of Civil Engineering, University of Auckland, Auckland. 2017 NZSEE Conference ABSTRACT:
More informationDEVELOPMENT OF ACCELERATED BRIDGE CONSTRUCTION DETAIL FOR SEISMIC REGIONS. W. Phillip Yen 1 and Amjad Aref 2
DEVELOPMENT OF ACCELERATED BRIDGE CONSTRUCTION DETAIL FOR SEISMIC REGIONS Abstract W. Phillip Yen 1 and Amjad Aref 2 This paper provides an overview of current research in development of the seismic detailing
More informationDownloaded from Downloaded from /1
PURWANCHAL UNIVERSITY VI SEMESTER FINAL EXAMINATION-2003 LEVEL : B. E. (Civil) SUBJECT: BEG359CI, Foundation Engineering. Full Marks: 80 TIME: 03:00 hrs Pass marks: 32 Candidates are required to give their
More informationSEISMIC CAPACITY EVALUATION OF POST-TENSIONED CONCRETE SLAB-COLUMN FRAME BUILDINGS BY PUSHOVER ANALYSIS
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 827 SEISMIC CAPACITY EVALUATION OF POST-TENSIONED CONCRETE SLAB-COLUMN FRAME BUILDINGS BY PUSHOVER ANALYSIS
More informationCompressive strength of double-bottom under alternate hold loading condition
Progress in the Analysis and Design of Marine Structures Guedes Soares & Garbatov (Eds) 017 Taylor & Francis Group, London, ISBN 978-1-138-06907-7 Compressive strength of double-bottom under alternate
More informationFinite Element Analyses for Centrifuge Modelling of Narrow MSE Walls
The First Pan American Geosynthetics Conference & Exhibition 2-5 March 2008, Cancun, Mexico Finite Element Analyses for Centrifuge Modelling of Narrow MSE Walls K-H Yang, Dept. of Civil Architectural and
More informationSeismic Analysis and Design of Vertically Irregular RC Building Frames
Seismic Analysis and Design of Vertically Irregular RC Building Frames Himanshu Bansal 1, Gagandeep 2 1 Student (M.E.), PEC University of Technology, Civil Department, Chandigarh, India 2 Student (M.E.),
More informationNumerical Analysis of Piles in Layered Soils: A Parametric Study By C. Ravi Kumar Reddy & T. D. Gunneswara Rao K L University, India
Global Journal of Researches in Engineering: e Civil And Structural Engineering Volume 14 Issue 6 Version 1. Year 214 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals
More informationUSE OF DIPP PILES FOR A NEW SUP BRIDGE IN WEST MELBOURNE
USE OF DIPP PILES FOR A NEW SUP BRIDGE IN WEST MELBOURNE If you want to put a photo on the title slide use this layout with colour photos (delete this box) Michael Wei, Jawad Zeerak & David Barton 8 th
More informationNonlinear Pushover Analysis of Steel Frame Structure Dahal, Purna P., Graduate Student Southern Illinois University, Carbondale
Nonlinear Pushover Analysis of Steel Frame Structure Dahal, Purna P., Graduate Student Southern Illinois University, Carbondale Abstract: The applicability of the SAP2000 software for the nonlinear pushover
More informationFRICTION-BASED SLIDING BETWEEN STEEL AND STEEL, STEEL AND CONCRETE, AND WOOD AND STONE
FRICTION-BASED SLIDING BETWEEN STEEL AND STEEL, STEEL AND CONCRETE, AND WOOD AND STONE Peng-Cheng Zhang 1, Takuya Nagae 2, Jason McCormick 3, Masahiro Ikenaga 4, Mika Katsuo 4, Masayoshi Nakashima 5 1
More informationSeismic Soil Pressure for Building Walls-An Updated Approach
11 th International Conference on Soil Dynamics and Earthquake Engineering (11 th ICSDEE) and the 3 rd International Conference on Earthquake Geotechnical Engineering (3 rd ICEGE), University of California,
More informationSeismic Response of a Typical Fixed Jacket-Type Offshore Platform (SPD1) under Sea Waves
Open Journal of Marine Science, 211, 1, 36-42 http://dx.doi.org/1.4236/ojms.211.124 Published Online July 211 (http://www.scirp.org/journal/ojms) Seismic Response of a Typical Fixed Jacket-Type Offshore
More informationSTUDY ON MODELING OF STEEL RIGID FRAME BRIDGE FOR DYNAMIC ELASTO-PLASTIC ANALYSIS
STUDY ON MODELING OF STEEL RIGID FRAME BRIDGE FOR DYNAMIC ELASTO-PLASTIC ANALYSIS 83 Tsutomu YOSHIZAWA 1, Masaru NARITOMI 2, Osamu ISHIBASHI 3 And Masahide KAWAKAMI 4 SUMMARY The modeling method of the
More informationRESEARCH PROJECT AT UNIVERSITY OF NEVADA, RENO
RESEARCH PROJECT AT UNIVERSITY OF NEVADA, RENO QUARTERLY REPORT October 1, 2016 to December 31, 2016 Period Year 1 Project Development and Seismic Evaluation of Pier Systems w/ Pocket Connections and Square
More informationTHE OPTIMUM LOCATION OF REINFORCEMENT EMBANKMENT USING 3D PLAXIS SOFTWARE
International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 5, September-October 1, pp. 91, Article ID: IJCIET_7_5_31 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=5
More informationINTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 2, No 2, 2011
INTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 2, No 2, 2011 Copyright 2010 All rights reserved Integrated Publishing services Research article ISSN 0976 4399 Solution of Shear Wall Location
More informationMETHODOLOGY OF THE VULNERABILITY STUDY OF THE STRATEGIC BUILDINGS IN ALGERIA
METHODOLOGY OF THE VULNERABILITY STUDY OF THE STRATEGIC BUILDINGS IN ALGERIA Youcef Mehani, Hakim Bechtoula, Abderrahmane Kibboua Researcher, Master of engineering, National Earthquake Engineering Research
More informationEXPERIMENTAL STUDY ON THE EFFECT OF TENSION FOR RUBBER BEARINGS
EXPERIMENTAL STUDY ON THE EFFECT OF TENSION FOR RUBBER BEARINGS Naoyuki IWABE 1, Mineo TAKAYAMA 2, Nagahide KANI 3 And Akira WADA 4 SUMMARY This paper presents the experimental results from the tension
More informationThree-dimensional modeling of the behavior of shallow tunnel under seismic loading
Three-dimensional modeling of the behavior of shallow tunnel under seismic loading I. SLITEEN, H. MROUEH, M. SADEK Laboratory of Civil Engineering and GeoEnvironment (LGCgE) University of Lille 1 Polytech-Lille,
More informationNonlinear Modeling of Dynamic Soil-Structure Interaction: A Practitioner s Viewpoint
Nonlinear Modeling of Dynamic Soil-Structure Interaction: A Practitioner s Viewpoint By (Arul) K. Arulmoli Earth Mechanics, Inc. Fountain Valley, California Workshop on Nonlinear Modeling of Geotechnical
More informationFINITE ELEMENT ANALYSIS OF THE AXIAL CAPACITY OF MICROPILES
FINITE ELEMENT ANALYSIS OF THE AXIAL CAPACITY OF MICROPILES Mohamed. A. Elkasabgy 1, M. Hesham. El Naggar ABSTRACT Micropiles are being increasingly utilized in many ground improvement applications to
More informationSeismic Analysis of Truss Bridges with Tall Piers
Journal P Krishi Sanskriti Publications http: Seismic Analysis of Truss Bridges with Tall Piers Akil Ahmed 1 and Jameel Ahmed 2 1,2 Deptt of Civil Engineering Jamia Millia Islamia, Jamia Nagar, New Delhi
More informationThe Vulnerability Seismic Assessment And providing reinforcement strategies for Najmoddin Kobra historical monument
The Vulnerability Seismic Assessment And providing reinforcement strategies for Najmoddin Kobra historical monument Majid Mavizchi Master of construction Engineering, Islamic Azad University (IAU) of Yazd,
More informationAntónio Morais. University of Lisbon, Lisbon, Portugal
Chinese Business Review, June 2017, Vol. 16, No. 6, 303-307 doi: 10.17265/1537-1506/2017.06.004 D DAVID PUBLISHING Dry Stone Masonry Ductility During an Earthquake António Morais University of Lisbon,
More informationIGC. 50 th. 50 th INDIAN GEOTECHNICAL CONFERENCE INFLUENCE OF TUNNELING ON AN EXISTING PILE FOUNDATION
50 th IGC 50 th INDIAN GEOTECHNICAL CONFERENCE 17 th 19 th DECEMBER 2015, Pune, Maharashtra, India Venue: College of Engineering (Estd. 1854), Pune, India INFLUENCE OF TUNNELING ON AN EXISTING PILE FOUNDATION
More informationRESILIENT INFRASTRUCTURE June 1 4, 2016
RESILIENT INFRASTRUCTURE June 1 4, 2016 PERFORMANCE ASSESSMENT OF THREE-STORY SHAPE MEMORY ALLOY REINFORCED CONCRETE WALLS Emad A. Abraik Ph.D. Candidate, Western University, Canada Maged A. Youssef Professor,
More informationBehaviour of Combined Pile-Raft Foundation (CPRF) under Static and Pseudo-static Conditions using PLAXIS3D
6 th International Conference on Earthquake Geotechnical Engineering 1-4 November 215 Christchurch, New Zealand Behaviour of Combined Pile-Raft Foundation (CPRF) under Static and Pseudo-static Conditions
More informationSOIL-STRUCTURE INTERACTION EFFECTS ON NUCLEAR STRUCTURES FOUNDED ON ROCK SITES
SOIL-STRUCTURE INTERACTION EFFECTS ON NUCLEAR STRUCTURES FOUNDED ON ROCK SITES L. M. Anderson 1, A. Hashemi 2 and F. Ostadan 3 ABSTRACT Following the US NRC 50.54 letter, all operating plants in the United
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 informationPILE SETTLEMENT ZONES ABOVE AND AROUND TUNNELLING OPERATIONS
PILE SETTLEMENT ZONES ABOVE AND AROUND TUNNELLING OPERATIONS H.G. Poulos Coffey Geosciences Pty Ltd. ABSTRACT This paper describes briefly the method of analysis of the response of a pile to tunnelling-induced
More informationStudy on Beam-to-Column Connection with Viscoelastic Hysteretic Dampers for Seismic Damage Control
P P IJISET - International Journal of Innovative Science, Engineering & Technology, Vol. 3 Issue 8, August 2016 Study on Beam-to-Column Connection with Viscoelastic Hysteretic Dampers for Seismic Damage
More informationCompressive strength of double-bottom under alternate hold loading condition
Compressive strength of double-bottom under alternate hold loading condition J.M. Gordo CENTEC, IST, University of Lisbon, Portugal ABSTRACT: The alternate bending of the bottom structure of a ship as
More informationSTUDY ON LAMINATED RUBBER BEARING BASE ISOLATORS FOR SEISMIC PROTECTION OF STRUCTURES
STUDY ON LAMINATED RUBBER BEARING BASE ISOLATORS FOR SEISMIC PROTECTION OF STRUCTURES Ganga Warrier A 1, Balamonica K 2, Sathish Kumar K 3, Dhanalakshmi 4 1 M.Tech Structural Engineering Student, Department
More informationSeismic Retrofit Of RC Columns With Inadequate Lap-Splice Length By External Post-Tensioned High-Strength Strips
Seismic Retrofit Of RC Columns With Inadequate Lap-Splice Length By External Post-Tensioned High-Strength Strips M. Samadi Department of civil engineering., Mashhad Branch, Islamic Azad University, Mashhad,
More informationDESIGN ASPECTS AFFECTING THE SEISMIC BEHAVIOUR OF STEEL MRF BUILDINGS: ANALYSIS OF THREE CASE STUDIES
DESIGN ASPECTS AFFECTING THE SEISMIC BEHAVIOUR OF STEEL MRF BUILDINGS: ANALYSIS OF THREE CASE STUDIES E MELE 1, A DE LUCA 2 And L DI SARNO 3 SUMMARY The seismic performance of three partial perimeter and
More informationA Study of a Magnetic Damper Using Rare-Earth Magnets and a Pinned Displacement Magnifying Mechanism
A Study of a Magnetic Damper Using Rare-Earth Magnets and a Pinned Displacement Magnifying Mechanism Taichi Matsuoka and Kenichiro Ohmata Department of Mechanical Engineering Informatics, Meiji University
More informationComparative Study of the Static and Dynamic Analysis of Multi-Storey Irregular Building
Comparative Study of the Static and Dynamic Analysis of Multi-Storey Irregular Building Bahador Bagheri, Ehsan Salimi Firoozabad, and Mohammadreza Yahyaei Abstract As the world move to the accomplishment
More informationStudy on Improvement of Seismic Performance of Transmission Tower Using Viscous Damper
Journal of Civil Engineering and Architecture 11 (217) 4-467 doi: 1.1726/1934-739/217..6 D DAVID PUBLISHING Study on Improvement of Seismic Performance of Transmission Tower Using Viscous Damper Masayuki
More informationReduction of Natural Frequency due to Flexural Cracks or Shear Cracks in Reinforced Concrete Members
Reduction of Natural Frequency due to Flexural Cracks or Shear Cracks in Reinforced Concrete Members S. Nagata, Y. Miyagawa & K. Kanazawa Central Research Institute of Electric Power industry, Japan SUMMARY:
More informationBehaviour and design of innovative hybrid coupled shear walls for steel buildings in seismic areas
Behaviour and design of innovative hybrid coupled shear walls for steel buildings in seismic areas A. Zona, G. Leoni & A. Dall Asta University of Camerino, Italy C. Braham, T. Bogdan & H. Degée University
More informationPerformance based Displacement Limits for Reinforced Concrete Columns under Flexure
Performance based Displacement Limits for Reinforced Concrete Columns under Flexure Ahmet Yakut, Taylan Solmaz Earthquake Engineering Research Center, Middle East Technical University, Ankara,Turkey SUMMARY:
More informationEvaluation on Bearing Capacity of Ring Foundations on two-layered Soil
Evaluation on Bearing Capacity of Ring Foundations on two-layered Soil R. Ziaie Moayed 1, V. Rashidian 2,and E. Izadi 3 Abstract This paper utilizes a finite element analysis to study the bearing capacity
More informationExperimental Study on Seismic Performance of Equipment with Vibration Isolation Devices
Experimental Study on Seismic Performance of Equipment with Vibration Isolation Devices Fan-Ru Lin, Jenn-Shin Hwang, Min-Fu Chen, Shiang-Jung Wang NCREE (National Center for Research on Earthquake Engineering),
More informationExperiment of Reinforce Concrete Beams at Different Loading Rates
Experiment of Reinforce Concrete Beams at Different Loading Rates Shiyun Xiao, Wenbo Cao & Haohao Pan Dalian University of Technology, Dalian 116024, China SUMMARY: (10 pt) Dynamic experiment of reinforced
More informationEffect of Concentric Braces on the Behaviour of Steel Structure by Pushover Analysis
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 232-334X, Volume 11, Issue 1 Ver. II (Jan. 214), PP 23-28 Effect of Concentric Braces on the Behaviour of Steel Structure
More informationSEISMIC PERFORMANCE OF CONCRETE TILT-UP BUILDINGS: CURRENT WALL-TO-SLAB CONNECTIONS
SEISMIC PERFORMANCE OF CONCRETE TILT-UP BUILDINGS: CURRENT WALL-TO-SLAB CONNECTIONS Frank Devine, 1 Omri Olund, 2 Ken Elwood 3 and Perry Adebar 4 1 Graduate Student, Dept. of Civil Engineering, University
More information