Displacement and effective stresses changes underneath strip footing on stiff ground with single and double voids
|
|
- Christiana Griffin
- 6 years ago
- Views:
Transcription
1 Displacement and effective stresses changes underneath strip footing on stiff ground with single and double voids Reem Sabouni Department of Civil Engineering ALHOSN University, Abu Dhabi, Abu Dhabi, United Arab Emirates ABSTRACT Settlement of structures due to soil cavities is one of the common geotechnical problems in several areas of the world. In most cases the settlement usually happens due to the fact that the cavity develops after the construction and utilization of the structure, and it is not accounted for in the foundation design stage. In this research the effect of single and double voids on the settlement and effective stresses underneath a strip footing (carrying it allowable load) is numerically investigated by two dimensional plane strain finite element analysis. To fully understand the parameters that are of influence on strip footings on single and multiple voids, a parametric study is carried out in this research to examine the effect of void depth, void distance from footing center, and void size on the settlement and effective stresses underneath these strip footings. This paper describes the models used in the course of this research along with the results of various parts of the study. From the results of this study it can be concluded that the presence of voids will affect the displacements and stresses underneath a strip footing if they have widths larger than half the footing width (B), are located at depths less than 2.5B, and are at horizontal distances away from the center of the footing of less than 3B. RÉSUMÉ Le Règlement des structures due aux cavités du sol est l'un des problèmes géotechniques fréquents dans plusieurs régions du monde. Dans la plupart des cas, le règlement existe en raison du fait que la cavité se développe après la construction et l'utilisation de la structure, et il n'est pas pris en compte dans l étape de la conception des fondations. Dans cette recherche, l'effet du simple et de double vides sur le règlement et sur les contraintes effectives sous une bande de pied (transportant la charge de travail) est analysé numériquement par deux dimensions plates des éléments finis. Afin de bien comprendre les paramètres qui ont une influence sur le pied dans un ou plusieurs vides, une étude paramétrique a été effectuée au cours de cette recherche pour étudier l'effet de profondeur du vide, la distance entre le vide et le centre du pied et la taille du vide sur le règlement et les contraintes sous les bandes. Ce document décrit les modèles utilisés au cours de cette recherche ainsi que les résultats des diverses parties de l'étude. D'après les résultats de cette étude, on peut conclure que la présence de vides affectera les déplacements et souligne sous une bande de pied si leurs largeurs est supérieure que la moitié de la largeur du pied (B), si ils sont situés à des profondeurs moins de 2.5B, et sont à distances horizontales éloignés du centre du pied de moins de 3B. 1 INTRODUCTION The presence of single or multiple voids under a foundation can cause serious engineering problems in the foundation itself and the superstructure supported by it. The effect of these voids will become more sever if they are at shallow depth below the foundation. Several experimental and numerical studies have been conducted to examine the effect of the voids on the foundation bearing capacity, yielding strength and collapse load (Baus and Wang, 1983, Kiyosumi et al. 2007, Kiyosumi, et al., 2011, Sireesh et al., 2009 and Wang and Hsieh, 1987) Baus and Wang (1983) have carried out 47 plain strain small scale model tests of shallow foundations on compacted silty clay with a continuous rectangular void centered with the foundation. In the same study they also carried out two dimensional finite element analyses with elastic perfectly plastic material. Kiyosumi et al. (2007) has studied the effect of multiple voids on the yielding pressure of a strip footing by a two dimensional plain strain finite element model analysis. Kiyosumi, et al (2011) has conducted a series of loading tests on stiff ground with continuous square voids under the plain strain conditions. These tests simulated the condition of a shallow foundation on calcareous sediment rocks with voids due to their solubility to water dissolution. Through a series of laboratory scale model tests the potential benefits of providing geocell reinforced sand mattress over subgrade with voids have been studied by Sireesh, et al. (2009). Wang and Hsieh (1987) have studied the collapse load of a strip footing centered above a continuous circular void. In this study they used the upper bound theorem of limit analysis to develop the collapse footing pressure for the strip footing. In the course of this research a parametric study was carried out to study the effect of the size and location of small single and double voids on the response of a strip footing (carrying the allowable load). The voids that were considered in this investigation were square voids with widths equal to or smaller than the strip footing width (B).
2 To model the effect of the presence of a cavity under the strip footing a plain stain finite element analysis model was developed in Plaxis 2D finite element analysis program (Brinkgreve, 2002). 2 INVESTIGATION METHODOLOGY AND STAGES (PARAMETRIC STUDY) Settlement of structures due to soil cavities is one of the common geotechnical problems in several areas of the world. In most cases the settlement usually happens due to the fact that the cavity develops after the construction and utilization of the structure, so it was not accounted for in the foundation design stage. To simulate this situation and evaluate its effect on the settlement and stresses of a strip footing, a 2D plain strain finite element analysis model of a strip footing - carrying the allowable load with a factor of safety of 2- was developed in Plaxis 2D. In order to investigate the effect of void s size and location on the response of a strip footing under its allowable load a parametric study was conducted in two stages. The voids under consideration were square voids with width equal to or smaller than the footing s width (B) of 2 m. Figure 1 is a schematic diagram describing the parameters varied in this study. In the first stage the effect of the presences of a single void on the displacement and the effective stresses beneath the center of the footing was studied, and in the second stage that of double voids was investigated. At the beginning, the effect of the void depth on the strip footing response was studied. The void depth was varied from 1.5B to 10.5B in intervals of B (2 m). Next, the effect of void size (w) was investigated. The void sizes studied were 0.25B, 0.5B, 0.75B and 1.0B with void center at 1.5B for all cases. After that, the effect of the horizontal distance between the center of the footing and the center of the void (h) on the footing response was studied. The distance (h) was changed from 1.0B to 11B in B (2m) intervals. In the second stage, the effect of the presence of double voids was investigated. The results from the first stage were used as a guide in selecting the effective voids sizes and locations. The two voids were selected to be square and equal in size with a width (w) of B (2m). At first, the effect of two symmetrically spaced voids with a distance h varying between 1.0B to 5B was studied (Figure 1b). Then, the effect of the presence of two consequent voids - with center to center spacing of 2B on the response of the strip footing was studied. The depth of the two voids changed from d (from the center of the top void) of 1.5B to 8.5B with increments of B (Figure 1c). The finite element analysis models used in both stages of this research are described in the next section followed by the discussion and analysis of the results of this investigation. 2 m and was modeled using an elastic plate element with a large stiffness to represent a case of rigid spread footing. To minimize the possible boundary effects the model was assigned a width of 26 B and a depth of 12.5 B. The standard boundary fixities were assigned to the model (See Figure 2). The horizontal and vertical displacements were fixed at the bottom of the model and the horizontal displacements were fixed at sides of the model. The soil was modeled using the 15-noded triangular element that incorporates 12 Gauss points. The Very fine mesh size was chosen from the program in order to get a good accuracy of the results even with changing the void location in different modelling cases in the study. A typical mesh used is shown in Figure 2. The analysis time was still found to be reasonable in all modeled cases. The soil was assumed to be an elastic perfectly plastic material, obeying the Mohr Coulomb failure criterion. The geotechnical property values used in the model are shown in Table 1. a) b) d =1.5m h B =2m h B =2m B h w d w d =1.5m d 2B =4m 3 NUMERICAL MODEL c) To model the strip footing resting on a soil with voids, a plain strain finite element model was developed in Plaxis 2D finite element program. The footing had a width (B) of Figure 1. Schematic view of the strip footing with: a) A single void, b) Two symmetric horizontal voids, and c) Two consequent vertical voids
3 The numerical procedure was initiated by performing an initial stress analysis. Then, the soil clusters that represent the voids were deactivated to model the case of a foundation on voids. After that the footing distributed load (q) was applied and the analysis was performed. The value of the load was chosen to match the footings allowable bearing capacity in the case of no void and with a factor of safety of 2 which was equal to 480 kn/m 2. To evaluate this uniformly distributed strip load, load increments were applied on the footing, in an initial model with no void, until the ground reached the failure state. The load increments are automatically chosen by the Plaxis 2D program and the calculations were also automatically terminated when soil failure is reached. A model similar to the above described model but with no voids present was also developed to be used as a reference model. Figure 2 shows a typical Plaxis 2D model. % Max. vertical displacement increase = Max [1] vertical disp. withvoid Maxvertical disp. novoid 100 Maxvertical novoid In the first stage the effect of changing the location and size of a single void was investigated. Figure 3 shows that the displacements and stresses underneath a strip footing will be affected by the presence of a single void (with w=b) at a depth (d) equal to or less than 2.5B. After this depth the void will cause a marginal change in the displacement and effective stresses. When the void was located at a depth of 1.5B the vertical displacement at the center of the footing increased by about 270%, whereas the effective stresses slightly decreased. This decrease maybe attributed to the fact that the void - which is located in a relatively strong soil- caused the stresses to be transferred away from the center of the footing due to the soil arching effect. Table 1. Material properties used in the model Physical properties Soil Saturated unit weight γ unsat 19 Saturated unit weight γ sat 21 Poisson s ratio v 0.3 Young s modulus E [MN/m 2 ] 100 Cohesion c [80 kn/m 2 ] 80 Internal friction angle [deg] 35 Uniformly distributed strip load Potential void locations 12.5B (25 m) Standard boundary fixities 26B (52 m) Figure 2. Typical finite element model and mesh 4 ANALYSIS AND DISCUSSION OF RESULTS The analysis and discussion of the results from both stages of the investigation are carried out in the following paragraphs. The scope mainly concentrated on the change in the vertical displacement and the effective stresses underneath the strip footing. The vertical stress increase was calculated based on the formula below Figure 3. Effect of void depth on: a) Footing displacement and b) Effective stresses underneath footing center The effect of the void width on the footing center displacement and the effective stresses is presented in Figure 4. This figure shows that if the void width is less than 0.5B it has a marginal effect on both parameters.
4 When the void width reaches 0.75B it causes a 50% increase in the vertical displacement and a slight increase in the effective stresses. At a void width of 1.0B the results match those from the first point in Figure 3, where, the footing s vertical displacement exhibits large increase, and the effective stresses exhibits small decrease. Figure 5. Effect of void horizontal distance (h) on: a) Footing displacement and b) Effective stresses underneath footing center Figure 4. Effect of void width on: a) Footing displacement and b) Effective stresses underneath footing center Figure 5 shows the effect of the voids horizontal distance (h) from the center of the footing on the displacement and effective stresses underneath the strip footing. The depth (d) and width (w) of the void in this part of the study was chosen to be -the critical values found from the previous two discussions- 1.5B and 1.0B, respectively. The results show that when the center of the void is located at a distance larger than 3B away from the center of the strip footing it will have a marginal effect on the displacement and effective stresses underneath the footing. If the void is at a distance of 1.0B to 3B the displacement increases by 25% to 5% and effective stresses increases by less than 5%. In the second stage of this study the effect of the presence of two voids was investigated. First, Figure 6 shows the effect of two symmetric horizontal voids. The location of the two voids is displayed in the schematic diagram in Figure 1b. The results show that the effect of the two symmetric voids on the displacement and effective stresses underneath the footing is marginal after 3B which matches the results of a single void. The percentage vertical displacement increase for the two symmetric voids at a distance less than 3B is about twice as that for a single void. Whereas for the two voids the effective stresses are slightly effected even with a void distance less than 3B.
5 Figure 6. Effect of two symmetric horizontal voids on: a) Footing displacement and b) Effective stresses underneath footing center Figure 7. Effect of two consequent vertical voids on: a) Footing displacement and b) Effective stresses underneath footing center Second, Figure 7 shows the effect of two consequent voids on the displacement and effective stresses underneath the footing. The location of the two voids is displayed in the schematic diagram in Figure 1c. The results show that the presence of the second void do not cause any change to the displacement and effective stresses above that for the single void. This may be attributed to the fact that the second void is located at a distance 2.5B or larger. 5 CONCLUSIONS In the course of this research, a parametric study was carried out to investigate the effect of the presence of small single and double voids on the displacement and effective stresses underneath a strip footing. The footing was loaded with the allowable load to study the case of the formation of voids in the soil below the foundation level during the usage stage of a structure. Square voids were considered in this study and their locations and sizes were varied. To model the strip footing on soil with voids a plain strain finite element analysis model was developed in Plaxis 2D. The results of the parametric study showed that the presence of a single void will affect the displacements and stresses underneath a strip footing if it has a width larger than half the footing width (B). The void has to be at depths less than or equal to 2.5B and at a horizontal distance distances away from the center of the footing of less than 3B. For double voids the same conclusions for the single void apply. It was found that for two symmetrical horizontal voids the percentage vertical displacement increase was almost twice as that for the comparable single void case. On the other hand the effective stresses were almost equal for both single and symmetrical horizontal double voids. For the two consequent voids the presence of the second void did not affect the displacement or effective stresses underneath the foundation due to the fact that it was at a depth more than 2.5B.
6 REFERENCES Baus, R.L., and Wang, M.C Bearing capacity of strip footing above void. Journal of Geotechnical Engineering, 109(1): Brinkgreve, R.B.J Plaxis Version 8 Materials Model Manual, Balkema publisher lisse, Tokyo. Kiyosumi, M., Kusakabe, O. and Ohuchi, M Yielding pressure of spread footing above multiple voids. Journal of Geotechnical and Geoenvironmental Engineering, 133: Kiyosumi, M., Kusakabe, O. and Ohuchi, M Model tests and analyses of bearing capacity of strip footing on stiff ground with voids. Journal of Geotechnical and Geoenvironmental Engineering, 137: Sireesh, S., Sitharam, T.G., Dash, S.K Bearing capacity of circular footing on geocell-sand matterss overlaying clay bed with void. Geotextiles and Geomembranes, 27: Wang, M.C., and Hsieh, C.W Collapse load of strip footing above circular void. Journal of Geotechnical Engineering, 113:
The effect of subsurface volume loss on the bearing capacity of reinforced granular material
The effect of subsurface volume loss on the bearing capacity of reinforced granular material M. Raafat Ahmed, Graduate Student Department of Civil Engineering & Applied Mechanics, McGill University, Montreal,
More informationEffect of Cavities on the Behaviour of Strip Footing Subjected to Inclined Load
Effect of Cavities on the Behaviour of Strip Footing Subjected to Inclined Load Ali A. Al-Jazaairry, Tahsin T. Sabbagh Abstract One of the important concerns within the field of geotechnical engineering
More informationNumerical Analysis of the Bearing Capacity of Strip Footing on Reinforced Soil Slope
Numerical Analysis of the Bearing Capacity of Strip Footing on Reinforced Soil Slope Mohammadreza Hamzehpour Ahmadi 1, Adel Asakereh 2 1 Department of Civil Engineering, University of Hormozgan, Pardis-E-Qeshm
More informationFACING EFFECTS IN GEOSYNTHETIC-REINFORCED SOIL STRUCTURES S. Shahab Yasrobi and Ali Azad Tarbiat Modares University, Tehran, Iran
7ième CONGRÈS CANADIEN DE GÉOTECHNIQUE ième CONGRÈS CONJOINT SCG/AIH-CNN 7TH CANADIAN GEOTECHNICAL CONFERENCE TH JOINT CGS/IAH-CNC CONFERENCE FACING EFFECTS IN GEOSYNTHETIC-REINFORCED SOIL STRUCTURES S.
More informationNumerical Modeling of Geogrid Reinforced Soil Bed under Strip Footings using Finite Element Analysis
Numerical Modeling of Geogrid Reinforced Soil Bed under Strip Footings using Finite Element Analysis Ahmed M. Gamal, Adel M. Belal, S. A. Elsoud, Abstract This article aims to study the effect of reinforcement
More informationTHREE DIMENSIONAL BEARING CAPACITY ANALYSIS OF GRANULAR SOILS, REINFORCED WITH INNOVATIVE GRID-ANCHOR SYSTEM *
Iranian Journal of Science & Technology, Transaction B: Engineering, Vol. 34, No. B4, pp 419-431 Printed in The Islamic Republic of Iran, 010 Shiraz University THREE DIMENSIONAL BEARING CAPACITY ANALYSIS
More informationEFFECT OF DEEP EXCAVATION SUPPORTED BY CONCRETE SOLIDER PILE WITH STEEL SHEET PILE LAGGING WALL ON ADJACENT EXISTING BUILDINGS
EFFECT OF DEEP EXCAVATION SUPPORTED BY CONCRETE SOLIDER PILE WITH STEEL SHEET PILE LAGGING WALL ON ADJACENT EXISTING BUILDINGS Mostafa Abdou 1 *, Ahamed Rushedy Towfeek 2, Waleed Hassan 3 1 prof. Dr.,
More informationPerformance of axially loaded single pile embedded in cohesive soil with cavities
Performance of axially loaded single pile embedded in cohesive soil with cavities Al Jazaairry, AA and Toma Sabbagh, TM Title Authors Type URL Performance of axially loaded single pile embedded in cohesive
More informationMechanical analysis of soil arching under dynamic loads
Mechanical analysis of soil arching under dynamic loads Han Gaoxiao, Gong Quanmei, Zhou Shunhua Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University,Shanghai,China
More informationCOURSE ON COMPUTATIONAL GEOTECHNICS A Geotechnical Design Tool. Faculty of Civil Engineering UiTM, Malaysia
COURSE ON COMPUTATIONAL GEOTECHNICS A Geotechnical Design Tool Faculty of Civil Engineering, Malaysia Name : COURSE CONTENTS Use of Plaxis Getting Started Exercise 1: Elastic analysis of drained footing
More informationTHE EFFECT OF LATERAL CONFINEMENT ON THE SETTLEMENT CHARACTERISTICS OF SHALLOW FOUNDATIONS ON SAND
Geotec., Const. Mat. & Env., DOI: https://doi.org/10.21660/2018.51.65933 ISSN: 2186-2982 (Print), 2186-2990 (Online), Japan THE EFFECT OF LATERAL CONFINEMENT ON THE SETTLEMENT CHARACTERISTICS OF SHALLOW
More informationNUMERICAL ANALYSIS OF GEOSYNTHETIC REINFORCED SOIL ABOVE A TUNNEL
NUMERICAL ANALYSIS OF GEOSYNTHETIC REINFORCED SOIL ABOVE A TUNNEL S.E. Ghoreishi Tayyebi 1, M.R. Babatabar 1 & A. Tahmasebi poor 2,* 1 Islamic Azad University, Ayatollah Amoli Branch, Departments of Civil
More informationBehaviour of Strip Footing on Geogrid Reinforced Slope subjected to Eccentric Load
ISSN (Print): 2347-671 (An ISO 3297: 27 Certified Organization) Behaviour of Strip Footing on Geogrid Reinforced Slope subjected to Eccentric Load Dhiraj D. Patil 1, Sunil S. Pusadkar 2, Sanjay W. Thakare
More informationSETTLEMENTS DUE TO TUNNEL CONSTRUCTION
5 SETTLEMENTS DUE TO TUNNEL CONSTRUCTION In this tutorial the construction of a shield tunnel in medium soft soil and the influence on a pile foundation is considered. A shield tunnel is constructed by
More informationBEHAVIOUR OF SQUARE FOOTING RESTING ON TWO LAYERED CLAY DEPOSITS. Dr. Sunil S. Pusadkar 1, Sheetal M. Baral 2 ABSTRACT
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 BEHAVIOUR OF SQUARE FOOTING RESTING ON TWO LAYERED
More informationModelling of Piled Raft Foundation on Soft Clay
Modelling of Piled Raft Foundation on Soft Clay Mohamed A.Baqi Mahmoud 1 and Hussien Elarabi 2 1 Department of Civil Engineering, Faculty of Engineering, University of Khartoum 2 Building and Road Research
More informationOn the numerical modeling of buried structures with compressible inclusion
On the numerical modeling of buried structures with compressible inclusion Mahmoud G. Hussein & Mohamed A. Meguid Department of Civil Engineering & Applied Mechanics, McGill University, Montreal, Quebec,
More informationPARAMETRIC STUDY OF SHALLOW FOUNDATION BEARING CAPACITY IN CLAYEY SOIL
International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 10, October 2018, pp. 1223 1230, Article ID: IJCIET_09_10_121 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=9&itype=10
More informationSeismic bearing capacity factors for strip footings
Seismic bearing capacity factors for strip footings Amir H.Shafiee 1, M.Jahanandish 2 1- Former MSc Student of Soil Mech. & Found. Eng., Shiraz University, Shiraz, Iran 2- Associate Professor, Civil Eng.
More informationComparison 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 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 informationBEARING CAPACITY IMPROVEMENT USING MICROPILES A CASE STUDY
BEARING CAPACITY IMPROVEMENT USING MICROPILES A CASE STUDY G.L. Sivakumar Babu 1, B. R.Srinivasa Murthy 2, D.S. N. Murthy 3, M.S. Nataraj 4 ABSTRACT Micropiles have been used effectively in many applications
More informationPRE-CAST CONCRETE SEGMENTAL ARCH DESIGN ON PILED FOUNDATIONS
57ième CONGRÈS CANADIEN DE GÉOTECHNIQUE 5ième CONGRÈS CONJOINT SCG/AIH-CNN 57TH CANADIAN GEOTECHNICAL CONFERENCE 5TH JOINT CGS/IAH-CNC CONFERENCE PRE-CAST CONCRETE SEGMENTAL ARCH DESIGN ON PILED FOUNDATIONS
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 informationBEHAVIOUR OF GEOTEXTILE REINFORCED STONE COLUMNS MANITA DAS, A.K.DEY ABSTRACT
BEHAVIOUR OF GEOTEXTILE REINFORCED STONE COLUMNS MANITA DAS, A.K.DEY ABSTRACT Stone columns are being used to improve the bearing capacity and reduce the settlement of a weak or soft soil. The improvement
More informationNumerical Evaluation of Bearing Capacity of Square Footing on Geosynthetic Reinforced Sand
Proceedings of the International Conference on Civil, Structural and Transportation Engineering Ottawa, Ontario, Canada, May 4 5, 2015 Paper No. 143 Numerical Evaluation of Bearing Capacity of Square Footing
More informationOPTIMIZING THE LOCATION OF CONTRACTION EXPANSION JOINTS IN CONCRETE CANAL LINING y
IRRIGATION AND DRAINAGE Irrig. and Drain. 58: 116 125 (2009) Published online 22 July 2008 in Wiley InterScience (www.interscience.wiley.com).401 OPTIMIZING THE LOCATION OF CONTRACTION EXPANSION JOINTS
More informationModelling of Negative Skin Friction on Driven Piles
Modelling of Negative Skin Friction on Driven Piles Osama Drbe, Abouzar Sadrekarimi & M. Hesham El Naggar Department of Civil & Environmental Engineering Western University London, Ontario, Canada, N6A
More informationSKIRTED SPUDCAN- SOIL INTERACTION UNDER COMBINED LOADING - GAP CONDITIONS AFTER PRELOADING
SKIRTED SPUDCAN- SOIL INTERACTION UNDER COMBINED LOADING - GAP CONDITIONS AFTER PRELOADING L. Kellezi*, O. Koreta and S. S. Sundararajan Geo, Copenhagen, Denmark *corresponding author: Lindita Kellezi:
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 informationThe take into account of soil-structure interaction phenomena to study mining subsidence consequences on buildings.
Author manuscript, published in "5. Conférence Européenne "Méthodes Numériques en Géotechnique", Paris : France (2002)" '* - The take into account of soil-structure interaction phenomena to study mining
More informationFailure mechanism and soil deformation pattern of soil beneath interfering square footings
d Numerical Methods in Civil Engineering Failure mechanism and soil deformation pattern of soil beneath interfering square footings Arash Alimardani Lavasan* Mahmoud Ghazavi** ARTICLE INFO Article history:
More informationResponse of Circular Footing by Varying the Vertical Spacing of Reinforcement Resting on Structural Fill
Response of Circular Footing by Varying the Vertical Spacing of Reinforcement Resting on Structural Fill Vivek Verma 1, L. K. Yadu 2 B. Tech. Student, Department of Civil Engineering, SSIPMT Raipur, Old
More informationCHAPTER 5 2D FINITE ELEMENT MODELLING OF BURIED PIPE TESTS
131 CHAPTER 5 2D FINITE ELEMENT MODELLING OF BURIED PIPE TESTS 5.1 INTRODUCTION Finite element method has been proved to be very useful tool in the analysis of buried structures. The method allows for
More informationAnalysis on influence of retaining wall deflection and ground settlement caused by Top-down and Bottom-up excavation methods
Analysis on influence of retaining wall deflection and ground settlement caused by Top-down and Bottom-up excavation methods Ching-Jiang Jeng Department of Environmental and Hazards-Resistant Design, Huafan
More informationComparison of modeling methods of drilled shaft foundation for seismic design
Comparison of modeling methods of drilled shaft foundation for seismic design Kyung-Soo Jeon, Kyoung-Bong Han, Joo-Yeob Seong & Pil-Young Song Super Long Span Bridge R&D Center, Korea Expressway Corporation,
More informationBROADENING OF HIGHWAYS AT CRITICAL SLOPE WATERWAY EMBANKMENTS USING VERTICAL PILES
BROADENING OF HIGHWAYS AT CRITICAL SLOPE WATERWAY EMBANKMENTS USING VERTICAL PILES Assoc. Prof. Hisham Arafat Mahdi 1 Head of Structural Engineering & construction Management-FUE-Egypt ABSTRACT The main
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 informationModel Studies on Footing Beam Resting on Geogrid Reinforced Soil Bed
Model Studies on Footing Beam Resting on Geogrid Reinforced Soil Bed Batham Geeta 1, Bhadoriya S. S. 2, Akhtar Sleem 3 1, Assistant Professor, Department of Civil Engg, UIT-RGPV Bhopal 2, Director, SGSITS
More informationAnalysis of T-Shape Footing On Layered Sandy Soil
ISSN(Online) : 9-875 ISSN (Print) : 7-67 (An ISO 97: 7 Certified Organization) Vol. 6, Issue 6, June 7 Analysis of T-Shape Footing On Layered Sandy Soil Gargi V. Kulkarni, Prof. S. W. Thakare P.G. Student,
More informationEvaluation of negative skin friction on sheet pile walls at the Rio Grande dry dock, Brazil
Geotechnical Aspects of Underground Construction in Soft Ground Viggiani (ed) 2012 Taylor & Francis Group, London, ISBN 978-0-415-68367-8 Evaluation of negative skin friction on sheet pile walls at the
More informationBehavior of pile due to combined loading with lateral soil movement
DOI 1.1186/s473-16-21-z ORIGINAL RESEARCH Open Access Behavior of pile due to combined loading with lateral soil movement B. Jegatheeswaran 1* and K. Muthukkumaran 2 *Correspondence: jegatheesb@gmail.com
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 informationEffects of Wall Embedded Length Ratio and Wall Thickness Ratio on Undrained Stability of Cantilever Piled Walls
Engineering and Physical Sciences Effects of Wall Embedded Length Ratio and Wall Thickness Ratio on Undrained Stability of Cantilever Piled Walls Boonchai UKRITCHON *, Kant TEERAVONG and Suraparb KEAWSAWASVONG
More informationBehaviour of Reinforced Soil Retaining Walls under Static Loads by Using Plaxis
Behaviour of Reinforced Soil Retaining Walls under Static Loads by Using Plaxis Mr. Srinivasa Reddy Ayuluri 1, Mr. D. Sidhu Ramulu 2 1 M.Tech, Malla Reddy Engineering College, Secunderabad 2 Assistant
More informationThe influence of tunnel boring on foundations and buildings in urban areas - A numerical study
Int. Workshop on Geotechnics of Soft Soils-Theory and Practice. Vermeer, Schweiger, Karstunen & Cudny (eds.) 2003 VGE The influence of tunnel boring on foundations and buildings in urban areas - A numerical
More informationTHE EFFECT OF STRESS STATE ON THE SOIL-WATER CHARACTERISTIC BEHAVIOR OF A COMPACTED SANDY- CLAY TILL
THE EFFECT OF STRESS STATE ON THE SOIL-WATER CHARACTERISTIC BEHAVIOR OF A COMPACTED SANDY- CLAY TILL S.K. Vanapalli, D.E. Pufahl, and D.G. Fredlund Department of Civil Engineering, University of Saskatchewan,
More informationSeismic Response of Reinforced Soil Retaining Walls with Block Facings
Missouri University of Science and Technology Scholars' Mine International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics 21 - Fifth International Conference on
More informationComparison of the results of load test done on stone columns and rammed aggregate piers using numerical modeling
Comparison of the results of load test done on stone columns and rammed aggregate piers using numerical modeling Ece Kurt Civil Eng., M.Sc.& Geoph. Eng., Istanbul, Turkey Berrak Teymur Asst. Prof. Dr.,
More informationNUMERICAL MODELLING OF HIGHWAY EMBANKMENT BY DIFFERENT GROUND IMPROVEMENT TECHNIQUES
NUMERICAL MODELLING OF HIGHWAY EMBANKMENT BY DIFFERENT GROUND IMPROVEMENT TECHNIQUES Sabahat A. Khan* Assistant Professor, Civil Engg. Deptt., AMU, Aligarh, India Syed M. Abbas Professor, Civil Engg. Deptt.,
More informationThis document is downloaded from DR-NTU, Nanyang Technological University Library, Singapore.
This document is downloaded from DR-NTU, Nanyang Technological University Library, Singapore. Title Three-dimensional finite element analysis of braced excavation systems Author(s) Winata, Berlina Margaretha.
More informationResearch Paper PERFORMANCE OF STRIP FOOTING ON SANDY SOIL DUE TO TUNNELING S.Hariswaran 1, K.Premalatha 2, K.Raja 3
Research Paper PERFORMANCE OF STRIP FOOTING ON SANDY SOIL DUE TO TUNNELING S.Hariswaran 1, K.Premalatha 2, K.Raja 3 Address for Correspondence 1 Assistant Professor, Department of Civil Engineering, Agni
More informationraft. The properties of the raft are important as it transfers the load from the trimmed piles to the adjacent 2 FINITE ELEMENT ANALYSES
Proceedings of the XVI ECSMGE Geotechnical Engineering for Infrastructure and Development ISBN 978-0-7277-6067-8 The authors and ICE Publishing: All rights reserved, 2015 doi:10.1680/ecsmge.60678 Influence
More informationAnalysis of skin friction in prebored and precast piles
Japanese Geotechnical Society Special Publication The 6th Japan-Korea Geotechnical Workshop Analysis of skin friction in prebored and precast piles Sangseom Jeong i), Gyoungja Jung ii), Dohyun Kim iii)
More informationEFFECT OF SOIL CEMENT COLUMN SPACING AND AREA REPLACEMENT RATIO ON EMBANKMENT BEARING CAPACITY: A QUEENSLAND CASE STUDY
Geotec., Const. Mat. & Env., ISSN: 2186-2982(Print), 2186-299(Online), Japan EFFECT OF SOIL CEMENT COLUMN SPACING AND AREA REPLACEMENT RATIO ON EMBANKMENT BEARING CAPACITY: A QUEENSLAND CASE STUDY Mark
More informationEvaluation of Geosynthetic Forces in GRSRW under Dynamic Condition
Evaluation of Geosynthetic Forces in GRSRW under Dynamic Condition Kooshyar Passbakhsh, Maryam Yazdi Abstract Geosynthetics have proved to be suitable for reinforced soil retaining walls. Based on the
More informationREDUCTION OF TRAIN VIBRATION BY DEEP STABILIZATION
1 REDUCTION OF TRAIN VIBRATION BY DEEP STABILIZATION Matti HAKULINEN 1, Sami KURKELA 2 1 Saimaa University of Applied Sciences, Lappeenranta, Finland 2 Finnish Consulting Group ltd., Lappeenranta, Finland
More informationPerformance of Reinforced Earth Retaining Wall with Fly Ash under Static and Dynamic Loading
Performance of Reinforced Earth Retaining Wall with Fly Ash under Static and Dynamic Loading 1 Umesh Kumar N, 2 Padmashree M. Kalliamni 1 Geotechnical Engineer, 2 Assistant professor, 1 Civil Engineering
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 informationA Parametric Study on Behaviour of Geogrid Reinforced Earth Retaining Wall
Kalpa Publications in Civil Engineering Volume 1, 2017, Pages 514 519 ICRISET2017. International Conference on Research and Innovations in Science, Engineering &Technology. Selected papers in Civil Engineering
More informationDriven pile capacity for wind farms in western Ontario, Canada
Driven pile capacity for wind farms in western Ontario, Canada Prapote Boonsinsuk & Siva Nadarajah AMEC Earth & Environmental, a Division of AMEC Americas Limited, Scarborough, Ontario, Canada Trudy Laidlaw
More informationANALYSIS OF DIFFERENT LOADS AFFECTING THE URBAN RAILWAY TUNNEL SYSTEMS OF CAIRO METRO UNDERNEATH THE RIVER NILE
UDC: 656.32(620) DOI: http://dx.doi.org/10.7708/ijtte.2015.5(2).02 ANALYSIS OF DIFFERENT LOADS AFFECTING THE URBAN RAILWAY TUNNEL SYSTEMS OF CAIRO METRO UNDERNEATH THE RIVER NILE Hamdy.H.A.Abd-el.rahim
More informationThree-dimensional computer simulation of soil nailing support in deep foundation pit
Three-dimensional computer simulation of soil nailing support in deep foundation pit Abstract Chang Zhi Zhu 1,2*, Quan Chen Gao 1 1 School of Mechanics & Civil Engineering, China University of Mining &
More informationFinite Element Analysis of Ground Modification Techniques for Improved Stability of Geotubes Reinforced Reclamation Embankments Subjected to Scouring
Finite Element Analysis of Ground Modification Techniques for Improved Stability of Geotubes Reinforced Reclamation Embankments Subjected to Scouring Hyeong-Joo Kim 1), *Jay Jamin 2) and Jose Leo Mission
More informationStatic Response of Reinforced Soil Retaining Walls with Modular Block Facing
Static Response of Reinforced Soil Retaining Walls with Modular Block Facing Morteza Sabet 1, Amir M. Halabian 2, Kazem Barkhordari 3 1 Graduate Student, Department of Civil Engineering, Yazd University
More informationModelling issues for numerical analysis of deep excavations
Modelling issues for numerical analysis of deep excavations Helmut F. Schweiger Computational Geotechnics Group, Institute for Soil Mechanics und Foundation Engineering Graz University of Technology, Austria
More information3d Numerical Analysis of Bearing Capacity of Square Foundations on Geogrid Reinforced Soil
Available online at http://www.ijsrpub.com/ijsrk ISSN: 2322-4541; 2014 IJSRPUB http://dx.doi.org/10.12983/ijsrk-2014-p0416-0424 Full Length Research Paper 3d Numerical Analysis of Bearing Capacity of Square
More informationChallenges of quick clay excavation in urban area with sloping ground
Challenges of quick clay excavation in urban area with sloping ground R. M. Nalbant 1 Multiconsult AS, Oslo, Norway ABSTRACT The paper presents the overall stability evaluation for a deep excavation in
More informationPerformance of Road Embankment on Cement Stabilized Soft Clay
Performance of Road Embankment on Cement Stabilized Soft Clay Ramy Saadeldin 1, Manal A. Salem 2 & Hani A. Lotfi 3 1. Research Assistant Environmental Systems Engineering University of Regina, Saskatchewan,
More informationFooting Bearing Capacity on Elastic-Plastic Soil
Footing Bearing Capacity on Elastic-Plastic Soil 1 Footing analysis verification Closed-form solutions for the bearing capacity of shallow footings are often used to verify finite element elastic-plastic
More informationM.J.D. Dobie 1* and P.F. McCombie 2. Tensar International Limited, Jakarta, Indonesia. University of Bath, Bath, United Kingdom. Corresponding Author
Proceedings of the XVI ECSMGE Geotechnical Engineering for Infrastructure and Development ISBN 978-0-7277-6067-8 The authors and ICE Publishing: All rights reserved, 2015 doi:10.1680/ecsmge.60678 Reinforced
More informationUse of Concrete Cross Walls to Reduce Movements Induced by Deep Excavation
The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM 12) Seoul, Korea, August 26-30, 2012 Use of Concrete Cross Walls to Reduce Movements Induced by Deep Excavation
More informationBEHAVIOR IMPROVEMENT OF FOOTINGS ON SOFT CLAY UTILIZING GEOFOAM
BEHAVIOR IMPROVEMENT OF FOOTINGS ON SOFT CLAY UTILIZING GEOFOAM G. E. ABDELRAHMAN AND A. F. ELRAGI Department of Civil Engineering, Fayoum University Fayoum, Egypt ABSTRACT: EPS, expanded poly-styrene
More informationEvaluation of the Behavior of Geo-Synthetic Reinforced Soil Wall with Improved Soil as Backfill
Evaluation of the Behavior of Geo-Synthetic Reinforced Soil Wall with Improved Soil as Backfill D.V.SivaSankara Reddy, Ch.Gopal Reddy, M.Jugal Kishore, K.Kowshik Abstract: By using PLAXIS 8. a model had
More informationSoil-Structure interaction effects on seismic response of a 16 storey RC framed building with shear wall
American Journal of Engineering Research (AJER) e-issn : 2320-0847 p-issn : 2320-0936 Volume-2 pp-53-58 www.ajer.org Research Paper Open Access Soil-Structure interaction effects on seismic response of
More informationRepeated Load Response of Square Footings on Geocell Reinforced Soil: Comparing Use of Single and Multiple Layered Geocells
Repeated Load Response of Square Footings on Geocell Reinforced Soil: Comparing Use of Single and Multiple Layered Geocells S.N. Moghaddas Tafreshi & O. Khalaj K.N. Toosi University of Technology, Tehran,
More informationEffect of Soil Reinforcement on Shear Strength and Settlement of Cohesive- Frictional Soil
Int. J. of GEOMATE, Sept., Int. J. 212, of GEOMATE, Vol. 3, No. Sept., 1 (Sl. 212, No. 5), Vol. pp. 3, 38-313 No. 1 (Sl. No. 5), pp. 38-313 Geotec., Const. Mat. & Env., ISSN:2186-2982(P), 2186-299(O),
More informationInteraction Between Hoop Stresses and Passive Earth Resistance in Single and Multiple Geocell Structures
Interaction Between Hoop Stresses and Passive Earth Resistance in Single and Multiple Geocell Structures A. Emersleben. PhD Student, Institute of Geotechnical Engineering and Mine Surveying, Clausthal
More informationModelling the response of single passive piles subjected to lateral soil movement using PLAXIS
Modelling the response of single passive piles subjected to lateral soil movement using PLAXIS Al Abboodi, I, Toma Sabbagh, TM and Al Jazaairry, A 10.17577/ Title Authors Type URL Modelling the response
More informationImproving the Bearing capacity of foundations using micropiles
Improving the Bearing capacity of foundations using micropiles Pourya Haghighy PhD Scholar Department of Civil and Environmental Engineering, College of Engineering The University of Adelaide Australia
More informationCoupled Stress-Seepage Numerical Design of Pressure Tunnels
IAHR-HK Student Research Forum, November 17, 2012 Coupled Stress-Seepage Numerical Design of Pressure Tunnels Afis Olumide BUSARI, Prof. C.W. LI Department of Civil and Environmental Engineering, the Hong
More informationResearch Article Some Studies on Prestressed Reinforced Granular Beds Overlying Weak Soil
International Scholarly Research Network ISRN Civil Engineering Volume 1, Article ID 337, 13 pages doi:1./1/337 Research Article Some Studies on Prestressed Reinforced Granular Beds Overlying Weak Soil
More informationUse of Finite Element Methods in Geotechnical Ultimate Limit State Design
Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering 2005 2006 Millpress Science Publishers/IOS Press. Published with Open Access under the Creative Commons BY-NC
More informationModulus of subgrade reaction for pipelines in a borehole installed by horizontal directional drilling
Modulus of subgrade reaction for pipelines in a borehole installed by horizontal directional drilling J.A.M. Teunissen, J.P. Pruiksma and H.M.G. Kruse 3 Deltares/GeoDelft, National institute Deltares/GeoDelft,
More informationSTUDY ON IMPROVEMENT IN BEARING CAPACITY OF SOIL USING GEOGRID REINFORCEMENT
International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 6, November-December 216, pp. 172 178, Article ID: IJCIET_7_6_19 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=6
More informationFooting Bearing Capacity on Elastic-Plastic Soil
Footing Bearing Capacity on Elastic-Plastic Soil 1 Footing analysis verification Closed-form solutions for the bearing capacity of shallow footings are often used to verify finite element elastic-plastic
More informationAnalysis of Buried Arch Structures; Performance Versus Prediction
Analysis of Buried Arch Structures; Performance Versus Prediction D.A. Jenkins: Reinforced Earth Pty Ltd, Somersby, NSW, Australia Synopsis: The Reinforced Earth Group introduced the TechSpan arch system
More informationStudy on the settlement and the load-bearing capacity of Long An soft ground reinforced by the stone columns
Japanese Geotechnical Society Special Publication International Mini Symposium CHUBU (IMS-CHUBU) Study on the settlement and the load-bearing capacity of Long An soft ground reinforced by the stone columns
More informationEstimation of Lateral Earth Pressure on Cantilever Sheet Pile using Flat Dilatometer Test (DMT) Data: Numerical Study
Estimation of Lateral Earth Pressure on Cantilever Sheet Pile using Flat Dilatometer Test (DMT) Data: Numerical Study Kousik Deb Indian Institute of Technology Kharagpur, Kharagpur, India. E-mail: kousik@civil.iitkgp.ernet.in
More informationFinite Element Analysis of Flexible Anchored Sheet Pile Walls: Effect of Mode of Construction and Dewatering Naveen Kumar 1, Arindam Dey 2*
Golden Jubilee Conference of the IGS Bangalore Chapter, Geo-Innovations, 30-31 October 2014 Finite Element Analysis of Flexible Anchored Sheet Pile Walls: Effect of Mode of Construction and Dewatering
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 informationInvestigation of the Bearing Capacity of Foundations on Encased Stone Columns Using Finite Element Method
International Journal of Integrated Engineering, Vol. 10 No. 1 (018) p. 10-108 Penerbit UTHM DOI: https://doi.org/10.0880/ijie.xx.xx.xxxx.xx.xxxx Investigation of the Bearing Capacity of Foundations on
More informationBehaviour of Raft Foundation with Vertical Skirt Using Plaxis 2d
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 7, Issue 6 (June 2013), PP. 20-24 ehaviour of Raft Foundation with Vertical Skirt
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 informationEFFECT OF AXIAL STIFFNESS OF GEOGRID IN THE FLEXIBLE PAVEMENT DEFORMATION THROUGH FINITE ELEMENT ANALYSIS WITH PLAXIS 2D
EFFECT OF AXIAL STIFFNESS OF GEOGRID IN THE FLEXIBLE PAVEMENT DEFORMATION THROUGH FINITE ELEMENT ANALYSIS WITH PLAXIS 2D Chetan C Patil 1, Dr.P. Shivananda 2 1 Research Scholar, 2 Professor 1,2 School
More informationNUMERICAL SIMULATION OF GEOGRID REINFORCED LIGHTWEIGHT GEOMATERIALS ON SOFT GROUND AREA
Proceeding of the th Asian Regional Conference on Geosynthetics June 17 -, 8 Shanghai, China NUMERICAL SIMULATION OF GEOGRID REINFORCED LIGHTWEIGHT GEOMATERIALS ON SOFT GROUND AREA T. Tanchaisawat 1, D.
More informationRelationship between twin tunnels distance and surface subsidence in soft ground of Tabriz Metro - Iran
University of Wollongong Research Online Coal Operators' Conference Faculty of Engineering and Information Sciences 2012 Relationship between twin tunnels distance and surface subsidence in soft ground
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 informationThe use of flexible flaps in improving the settlement resistent behaviour of raft foundations
SECM/15/144 The use of flexible flaps in improving the settlement resistent behaviour of raft foundations J.M.C.J.Jayasundara 1*, B.M.K.L.K.Basnayake 1 and K.G.H.C.N.senaviratne 1 1 University of Peradeniya,
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 information