上海交通大学学报（英文版） ›› 2013, Vol. 18 ›› Issue (2): 224-228.doi: 10.1007/s12204-013-1386-1

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A Simplified Analysis Method for the Lateral Deformation of Braced Excavations

XU Hai-yong1 (许海勇), LIU Wei1,2 (刘玮), CHEN Long-zhu1* (陈龙珠)   

  1. (1. Institute of Engineering Safety & Disaster Prevention, Shanghai Jiaotong University, Shanghai 200240, China; 2. Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, Zhejiang, China)
  • 出版日期:2013-04-30 发布日期:2013-05-10
  • 通讯作者: CHEN Long-zhu1 (陈龙珠) E-mail:lzchen@sjtu.edu.cn

A Simplified Analysis Method for the Lateral Deformation of Braced Excavations

XU Hai-yong1 (许海勇), LIU Wei1,2 (刘玮), CHEN Long-zhu1* (陈龙珠)   

  1. (1. Institute of Engineering Safety & Disaster Prevention, Shanghai Jiaotong University, Shanghai 200240, China; 2. Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, Zhejiang, China)
  • Online:2013-04-30 Published:2013-05-10
  • Contact: CHEN Long-zhu1 (陈龙珠) E-mail:lzchen@sjtu.edu.cn

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.

关键词: excavation, pile-anchor retaining structure, fitted function, lateral deformation, analytical evaluation

Abstract: 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.

Key words: excavation, pile-anchor retaining structure, fitted function, lateral deformation, analytical evaluation

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