Three-dimensional numerical modeling of single geocellreinforced sand  

作　　者：Xiaoming YANG Jie HAN Robert L.PARSONS Dov LESHCHINSKY 

机构地区：[1]Department of Civil,Environmental,and Architectural Engineering,the University of Kansas,Lawrence,KS 55045,USA [2]Department of Civil and Environmental Engineering,the University of Delaware,Newark,DE 19719,USA

出　　处：《Frontiers of Structural and Civil Engineering》2010年第2期233-240,共8页结构与土木工程前沿（英文版）

基　　金：This research was funded jointly by the University of Kansas,Transportation Research Institute from Grant#DT0S59-06-G-00047,provided by the US Department of Transportation-Research and Innovative Technology Administration and PRS Mediterranean,Inc.in Israel.

摘　　要：This paper summarizes the development of a three-dimensional numerical model for analyzing single geocell-reinforced soil.In this model,the infill soil was modeled using the Duncan-Chang model,which can simulate non-linearity and stress-dependency of soil.Geocell was modeled using linearly elastic plate elements,which can carry both bending and membrane stresses.A linear interface stress-strain relationship with a MohrCoulomb yield criterion was adopted to model the interface friction between the geocell wall and the soil.By modeling the geocell and the soil separately,the interaction between the soil and the geocell can be accurately simulated.To verify this model,a plate load test was conducted in the laboratory,in which a 12-cmthick sand layer reinforced by a single geocell was subjected to a vertical load from a circular steel plate.The load-displacement curves and the horizontal tensile strain of the geocell were recorded during the test.A numerical model was created according to the setup of the load test.The numerical results compared reasonably well with the test data.

关 键 词：geosynthetic reinforcement GEOCELL numerical model FLAC^(3D) 

分 类 号：TG1[金属学及工艺—金属学]