Three-dimensional effects of a deep excavation on wall deflections in loose to medium dense sands

Abstract This paper presents a study that evaluates the three-dimensional effects of a deep excavation on wall displacements in loose to medium dense sands. A finite element (FE) analysis is then conducted to verify the performance of 3D FE models in predicting wall displacements and results indicate that the use of the Mohr-Coulomb model with the soil modulus obtained from in-situ dilatometers for loose to medium dense sands yields reasonable predictions of the excavation-induced wall displacements. Based on the parametric study, the plane strain ratio (PSR), was determined for excavations in loose to medium dense sand.

[1]  Chang-Yu Ou,et al.  Evaluation of deformation parameter for deep excavation in sand through case histories , 2013 .

[2]  Andrew J. Whittle,et al.  Prediction and interpretation of the performance of a deep excavation in Berlin sand , 2011 .

[3]  Richard J. Finno,et al.  Observed Performance of the One Museum Park West Excavation , 2015 .

[4]  Suched Likitlersuang,et al.  Finite element analysis of a deep excavation: A case study from the Bangkok MRT , 2013 .

[5]  Chang-Yu Ou,et al.  Three-dimensional deformation behavior of the Taipei National Enterprise Center (TNEC) excavation case history , 2000 .

[6]  Gholamreza Mesri,et al.  The coefficient of earth pressure at rest , 1993 .

[7]  Zhandos Y. Orazalin,et al.  Three-Dimensional Analyses of Excavation Support System for the Stata Center Basement on the MIT Campus , 2015 .

[8]  Jian-Hua Wang,et al.  Wall and Ground Movements due to Deep Excavations in Shanghai Soft Soils , 2010 .

[9]  Fred H. Kulhawy,et al.  Manual on estimating soil properties for foundation design , 1990 .

[10]  Alec Westley Skempton,et al.  Standard penetration test procedures and the effects in sands of overburden pressure, relative density, particle size, ageing and overconsolidation , 1986 .

[11]  Gordon Tung-Chin Kung,et al.  Investigating the effect of soil models on deformations caused by braced excavations through an inverse-analysis technique , 2010 .

[12]  Joseph E. Bowles,et al.  Foundation analysis and design , 1968 .

[13]  Charles Wang Wai Ng,et al.  Three-dimensional modelling of a diaphragm wall construction sequence , 1999 .

[14]  Jc Kalra,et al.  QUEEN ELIZABETH II CONFERENCE CENTRE: GEOTECHNICAL ASPECTS. , 1986 .

[15]  Chang-Yu Ou,et al.  Deep Excavation: Theory and Practice , 2006 .

[16]  William Powrie,et al.  Back-analysis of an embedded retaining wall with a stabilizing base slab , 1999 .

[17]  Der-Guey Lin,et al.  THREE DIMENSIONAL ANALYSES OF DEEP EXCAVATION IN TAIPEI 101 CONSTRUCTION PROJECT , 2007 .

[18]  G. Wayne Clough,et al.  Construction Induced Movements of Insitu Walls , 1990 .

[19]  Chang-Yu Ou,et al.  EVALUATION OF CLAY CONSTITUTIVE MODELS FOR ANALYSIS OF DEEP EXCAVATION UNDER UNDRAINED CONDITIONS , 2010 .

[20]  R. Michalowski.  Coefficient of Earth Pressure at Rest , 2005, Geotechnical Correlations for Soils and Rocks.

[21]  Bin-Chen Benson Hsiung,et al.  A case study on the behaviour of a deep excavation in sand , 2009 .

[22]  Helmut Schweiger,et al.  Influence of constitutive model and EC7 design approach in FEM analysis of deep excavations , 2009 .

[23]  Youssef M. A. Hashash,et al.  Simplified Model for Wall Deflection and Ground-Surface Settlement Caused by Braced Excavation in Clays , 2007 .

[24]  Chang-Yu Ou,et al.  Three-Dimensional Finite Element Analysis of Deep Excavations , 1996 .

[25]  A. Fourie,et al.  Studies of the influence of non-linear stress-strain characteristics in soil-structure interaction , 1986 .