软土深基坑中的角落效应

The corner effect of deep excavation in soft soil

在对软土深基坑档墙与土体的变形、破坏等基坑支护失事原因分析的基础上，提出基坑角落效应的概念，指出角落效应为当前软土深基坑工程设计与施工所忽视，分析了角落效应的形成机理及其综合特性，讨论了角落效应对基坑稳定性的影响及其治理建议。

Based on the analysis of the deformation and the failure of the retaining walls and the soil mass of deep excavation in soft clay,coupling with the analysis of failure reasons for excavation,the conception of corner effect is presented in this paper,which is always neglected in the design and construction of deep excavation in soft clya.This paper analyzes the formation methanism and the composite characters of the corner effect of deep excavation,and discusses its influencec on the stability of excavation,and its treatment measures as well.