文献类型：期刊文献

英文题名：Slip Line Theory Based Stability Analysis on the Influence of Deep Excavation on Adjacent Slope

作者：Zhou, Aizhao[1];Li, Chengchao[1];Jiang, Pengming[1];Yao, Kai[2];Li, Na[3];Wang, Wei[3]

机构：[1]Jiangsu Univ Sci & Technol, Dept Civil & Architecture Engn, Zhenjiang 212003, Jiangsu, Peoples R China;[2]Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore;[3]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Zhejiang, Peoples R China

年份：2018

卷号：2018

外文期刊名：MATHEMATICAL PROBLEMS IN ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000437896600001)、、EI(收录号：20182905555357)、Scopus(收录号：2-s2.0-85049845643)、WOS

基金：This study was financially cosupported by the National Natural Science Foundation of China (Grants nos. 51579119 and NO. 41772311) and the Natural Science Foundation of Zhejiang Province (no. LY17E080016).

语种：英文

外文关键词：Excavation - Piles - Safety factor - Shear stress - Skid resistance

外文摘要：The impact of deep excavation to the stability of adjacent slope is evaluated based on the slip line theory. Stress field of slope under various excavation conditions is simulated by finite element method, while slip line field is determined by non-associated flow rule. Factor of safety is obtained by integrating the skid-resistance and the shear stress on each slip line, and the slip line with minimum factor of safety corresponds to the critical slip surface. Two typical displacement constraint boundaries are considered. The results indicate that the critical slip surface moves towards to the slope surface and develops downwards. The factor of safety decreases with the excavation process. For flexible displacement constraint boundary, large deformation of supporting pile causes obvious variation of critical slip surface and factor of safety. In terms of the stiff displacement constraint boundary with internal supports, deep excavation only has limited effect on the slope stability.