Non-limit passive soil pressure on rigid retaining walls  

作　　者：Dou Guotao Xia Junwu YU Wenjie Yuan Fang Bai Weigang 

机构地区：[1]State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou 221008, China [2]Jiangsu Collaborative Innovation Center of Building Energy Saving and Construction Technology, Xuzhou 221116, China [3]Zhengzhou Zhongding Steel Structure Engineering Co., Ltd., Zhengzhou 450000, China

出　　处：《International Journal of Mining Science and Technology》2017年第3期581-587,共7页矿业科学技术学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (No.51274192);Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering Open Foundation of China (No.JSKL2014K12);Jiangsu Ordinary University Graduate Students Research and Innovation Project of China (No.KYLX-1392)

摘　　要：This paper aims to reveal the depth distribution law of non-limit passive soil pressure on rigid retaining wall that rotates about the top of the wall(rotation around the top(RT) model). Based on Coulomb theory, the disturbance degree theory, as well as the spring-element model, by setting the rotation angle of the wall as the disturbance parameter, we establish both a depth distribution function for sand and a nonlinear depth distribution calculation method for the non-limit passive soil pressure on a rigid retaining wall under the RT model, which is then compared with experiment. The results suggest that under the RT model: the non-limit soil pressure has a nonlinear distribution; the backfill disturbance degree and the lateral soil pressure increase with an increase in the wall rotation angle; and, the points where the resultant lateral soil pressure acts on the retaining wall are less than 2/3 of the height of the wall. The soil pressure predicted by the theoretical calculation put forward in this paper are quite similar to those obtained by the model experiment, which verifies the theoretical value, and the engineering guidance provided by the calculations are of significance.This paper aims to reveal the depth distribution law of non-limit passive soil pressure on rigid retaining wall that rotates about the top of the wall （rotation around the top （RT） model）. Based on Coulomb theory, the disturbance degree theory, as well as the spring-element model, by setting the rotation angle of the wall as the disturbance parameter, we establish both a depth distribution function for sand and a nonlinear depth distribution calculation method for the non-limit passive soil pressure on a rigid retaining wall under the RT model, which is then compared with experiment. The results suggest that under the RT model： the non-limit soil pressure has a nonlinear distribution： the backfill disturbance degree and the lateral soil pressure increase with an increase in the wall rotation angle： and, the points where the resultant lateral soil pressure acts on the retaining wall are less than 2/3 of the height of the wall. The soil pressure predicted by the theoretical calculation put forward in this paper are quite similar to those obtained by the model experiment, which verifies the theoretical value, and the engineering guidance provided by the calculations are of significance.

关 键 词：RT model Rigid wall Non-limit passive soil pressure Spring element Genetic algorithm 

分 类 号：TU476.4[建筑科学—结构工程]