基坑开挖对既有桥梁桩基的数值分析

doi:10.3969/j.issn.1007-7162.2014.01.021

Journal of Guangdong University of Technology ›› 2014, Vol. 31 ›› Issue (1): 107-111.doi: 10.3969/j.issn.1007-7162.2014.01.021

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Numerical Analysis of Responses of Existing Bridge Piers Induced by Deep Excavation

Zhang Ya-ning¹， Yang Chun-shan²， Liu Jing-wei¹, He Na³

1.School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; 2. Faculty of Civil and Transportation，South China University of Technology，Guangzhou 510641,China;3. Guangdong Vocational School of Polytechnic, Guangzhou 510500, China

Received:2012-12-06 Online:2014-03-29 Published:2014-03-29

Abstract

Abstract: The two central issues during the process of pit excavation are the adverse effects brought up by excavationinduced soil deformation on adjacent piers, and the additional stress, displacement and bend moment of pile foundation caused by the interaction between pile foundation and earth. With reference to engineering projects, the 3D FEM was established using GTS software. On the basis, the interaction between pit excavation and pile, including the displacement of pit supporting structure, surface subsidence and the pile bending moment changing characteristics, was analyzed. Besides, the calculation results were compared with the measuring results.

Key words: deep excavation; bridge; pile foundation; numerical analysis

ZHANG Ya-Ning, YANG Chun-Shan, LIU Jin-Wei, HE Na. Numerical Analysis of Responses of Existing Bridge Piers Induced by Deep Excavation[J].Journal of Guangdong University of Technology, 2014, 31(1): 107-111.