水平-竖向加筋土挡墙作用机理的离散元数值模拟

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (10): 1548-1552.

水平-竖向加筋土挡墙作用机理的离散元数值模拟

周淮1,2，张孟喜1

(1.上海大学土木工程系，上海 200072; 2.上海城投置地(集团)有限公司，上海 200438)

收稿日期:2011-10-08 出版日期:2012-10-30 发布日期:2012-10-30
基金资助:
国家自然科学基金资助项目（40972192）

Numerical Simulation on Mechanism of Soil Retaining Wall Reinforced with H-V Inclusions by DEM

ZHOU Huai-1, 2 , ZHANG Meng-Xi-1

(1.Department of Civil Engineering, Shanghai University, Shanghai 200072, China; 2.Shanghai Chengtou City Land (Group) Corporation, Shanghai 200438, China)

Received:2011-10-08 Online:2012-10-30 Published:2012-10-30

摘要/Abstract

摘要： 在水平-竖向（H-V）加筋土挡墙室内模型试验的基础上，采用基于离散元理论的颗粒流软件（PFC）对试验进行了仿真模拟.就PFC模拟得出的挡墙变形和竖筋侧应力等数据，与模型试验结果进行了比较和验证.同时，结合挡墙内部土颗粒位移和应力矢量图研究了H-V土加筋挡墙的作用机理及破裂面形式.

关键词: 水平-竖向加筋土挡墙, 模型试验, 颗粒流, 离散元

Abstract: Soil reinforced with horizontal-vertical (H-V) is a new concept of reinforced soil. A series of laboratory model tests of soil retaining wall reinforced with H-V inclusions were investigated and the particle flow code (PFC), based on the discrete element method (DEM), was used to simulate the model tests. The facing displacements and lateral earth pressures acted on vertical elements from PFC numerical simulations were compared with the results of model tests. Meanwhile, the mechanism and failure surface of soil retaining wall reinforced with H-V inclusions were investigated by the displacement and stress field of PFC ball units.

Key words: soil retaining wall reinforced with horizontal-vertical (H-V) inclusions, model test, particle flow code (PFC), discrete element method (DEM)

中图分类号:

TU 443

周淮1, 2, 张孟喜1. 水平-竖向加筋土挡墙作用机理的离散元数值模拟[J]. 上海交通大学学报（自然版）, 2012, 46(10): 1548-1552.

ZHOU Huai-1, 2 , ZHANG Meng-Xi-1. Numerical Simulation on Mechanism of Soil Retaining Wall Reinforced with H-V Inclusions by DEM[J]. Journal of Shanghai Jiaotong University, 2012, 46(10): 1548-1552.

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