TY - GEN
T1 - Numerical study of group shafts in MSE wall under two loading conditions
AU - Rahman, M. S.
AU - Huang, Jie
AU - Bin-Shafique, S.
AU - Yang, Xiaoming
N1 - Technical and theoretical guidance for geosynthetics in retaining walls, soil slopes, embankments over soft soil, geotextile tubes, and backfill Key information for engineering of highways, railroads, bridges, pipelines, tunnels and more From a symposium supported by the International Geosynthetics Society, the ASCE, the Italian Geotechnical Association, the Public Works Research Institute of Japan and major universities The present volume contains over 70 original research papers devoted to the design, testing and application of geosynthetic structures in soil.
PY - 2013
Y1 - 2013
N2 - The construction of laterally loaded drilled shafts within the reinforced zone of a mechanically stabilized earth (MSE) wall has become popular due to space constraint. No interaction between the MSE wall and drilled shafts is considered in current design methods due to the complexity and limited data available on such applications. This paper presents a numerical study on a group of shafts in an MSE wall under two lateral loading conditions, i.e., equal force and equal displacement. The numerical study was based on a full-scale test on a group of three shafts in an MSE wall, which were loaded to a large displacement under a displacement control mode. A plastoelastic constitutive model, able to consider the strain hardening behavior, was used to model the backfill material. The MSE wall facing units were simulated by discrete blocks which interacted with each other by interfaces. The geogrid reinforcement was simulated by plane elements which can only sustain inplane forces. In the numerical simulation, the drilled shafts were laterally loaded with incremental forces. The numerical results were reported in terms of the deflections of drilled shaft and MSE wall, and the additional lateral earth pressure induced by the lateral load. It was found that the drilled shafts and the MSE wall behaved differently under these two loading conditions.
AB - The construction of laterally loaded drilled shafts within the reinforced zone of a mechanically stabilized earth (MSE) wall has become popular due to space constraint. No interaction between the MSE wall and drilled shafts is considered in current design methods due to the complexity and limited data available on such applications. This paper presents a numerical study on a group of shafts in an MSE wall under two lateral loading conditions, i.e., equal force and equal displacement. The numerical study was based on a full-scale test on a group of three shafts in an MSE wall, which were loaded to a large displacement under a displacement control mode. A plastoelastic constitutive model, able to consider the strain hardening behavior, was used to model the backfill material. The MSE wall facing units were simulated by discrete blocks which interacted with each other by interfaces. The geogrid reinforcement was simulated by plane elements which can only sustain inplane forces. In the numerical simulation, the drilled shafts were laterally loaded with incremental forces. The numerical results were reported in terms of the deflections of drilled shaft and MSE wall, and the additional lateral earth pressure induced by the lateral load. It was found that the drilled shafts and the MSE wall behaved differently under these two loading conditions.
UR - https://www.scopus.com/pages/publications/84960958542
M3 - Conference article
T3 - Design and Practice of Geosynthetic-Reinforced Soil Structures
SP - 116
EP - 125
BT - Design and Practice of Geosynthetic-Reinforced Soil Structures
A2 - Gottardi, Guido
A2 - Cazzuffi, Daniele
A2 - Ling, Hoe I.
A2 - Han, Jie
A2 - Tatsuoka, Fumio
PB - DEStech Publications Inc.
T2 - International Symposium on Design and Practice of Geosynthetic-Reinforced Soil Structures and Joint Sessions with 26th Italian National Conference on Geosynthetics
Y2 - 14 October 2013 through 16 October 2013
ER -