A Simplified Analysis Method for the Lateral Deformation of Braced Excavations  

作　　者：许海勇 刘玮 陈龙珠 

机构地区：[1]Institute of Engineering Safety & Disaster Prevention,Shanghai Jiaotong University [2]Ningbo Institute of Technology,Zhejiang University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2013年第2期224-228,共5页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China (No. 51178267);the Science and Technology Committee of Shanghai (No. 10231200600)

摘　　要：Pile-anchor retaining structure is widely used in foundation pit engineering and side slope engineering in many countries. In contrast to strut, pile-anchor retaining structure has its typical features and advantages. It does not occupy the internal space of the foundation pit, and the project cost is much lower. Accurate prediction of the lateral displacement of the retaining structure is very important in the design stage. A simplified analysis method and several calculation assumptions of the lateral deformation of pile-anchor retaining structures are set up according to the engineering features. The expression function of lateral displacement versus depth is solved by means of a fitted function and the quasi-elastic summation method. The parameters are obtained through the stiffness equation of the anchors and the principle of minimum potential energy. The analytical evaluation of the lateral deformation curve is then completed, whose applicability is proved through practical engineering.Pile-anchor retaining structure is widely used in foundation pit engineering and side slope engineering in many countries. In contrast to strut, pile-anchor retaining structure has its typical features and advantages. It does not occupy the internal space of the foundation pit, and the project cost is much lower. Accurate prediction of the lateral displacement of the retaining structure is very important in the design stage. A simplified analysis method and several calculation assumptions of the lateral deformation of pile-anchor retaining structures are set up according to the engineering features. The expression function of lateral displacement versus depth is solved by means of a fitted function and the quasi-elastic summation method. The parameters are obtained through the stiffness equation of the anchors and the principle of minimum potential energy. The analytical evaluation of the lateral deformation curve is then completed, whose applicability is proved through practical engineering.

关 键 词：EXCAVATION pile-anchor retaining structure fitted function lateral deformation analytical evaluation 

分 类 号：TU473.1[建筑科学—结构工程] TU473.2[建筑科学—土工工程]