Undrained Stability Analysis of Three-Dimensional Rectangular Trapdoor in Clay

作     者：YIN Xiaojun XIE Jun 尹小军;谢骏

作者机构：College of Mining EngineeringHeilongjiang University of Science and TechnologyHarbin 150027China Independent Senior Geotechnical Engineering ConsultantToronto ON L4C 9G1Canada 

出 版 物：《Journal of Donghua University(English Edition)》 (东华大学学报（英文版）)

年 卷 期：2020年第37卷第4期

页      面：334-339页

学科分类：0817[工学-化学工程与技术] 08[工学] 083305[工学-城乡生态环境与基础设施规划] 0807[工学-动力工程及工程热物理] 081403[工学-市政工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0814[工学-土木工程] 0811[工学-控制科学与工程] 0833[工学-城乡规划学] 

基　　金：the Fundamental Research Funds for the Provincial Universities China(No.702/000007020303) 

主　　题：three-dimensional rectangular trapdoor upper bound solution stability ratio rigid block block analysis technique 

摘      要：A new collapse model of the trapdoors,three-dimensional rectangular trapdoor(3DRT),is presented for ground surface *** stability of 3DRT is examined with the upper bound method of plasticity limit analysis *** soil where the trapdoors are located is assumed to be a perfectly plastic model with a Tresca yield *** analysis technique is employed to investigate the collapse of *** model is divided into five different block types and added up to ten rigid *** to the law of conservation of energy,the critical stability ratios of 3DRT are obtained through a search *** results of upper bound solution for 3DRT are given,and three trapdoor models with depth various are discussed during the application in the stability analysis of square *** critical stability ratios can be used in the design of underground excavation and support force.