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Study on Transverse Seismic Response of Circular Shield Tunnel

Author: MaoXiFang
Tutor: DingHaiPing；ShaoYongJian
School: Suzhou Institute of Technology
Course: Structural Engineering
Keywords: finite difference method FLAC quiet boundary nonlinear soil—structure interaction
CLC: U452.28
Type: Master's thesis
Year: 2009
Downloads: 40
Quote: 0
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Abstract


Shield tunnel is a primary type of the modern metropolitan underground engineering. Therefore the research on its seismic security is very important. In this paper, the subway shield tunnel with circular section was taken as the simulator study object with FLAC which is described as an“explicit, finite difference program”that performs the“Fast Lagrangian Analysis of Continua”,and the changes of liner structure internal force and the effects of tunnel on the surrounding site were discussed including two conditions :soil is linear and soil is nonlinear,which could be summarized as the following aspects:1 The significance of current study situation as well as existing methods of seismic analysis of shield tunnel are briefly summarized. Then the main studies done in this paper is pointed out;2 The changes of liner structure’s internal force were discussed and effects of soil nonlinearity on seismic response of circular tunnel were discussed too when the stiffness of soil were changed;3 Effects of circle tunnel on the surrounding site were discussed including two conditions :soil is linear and soil is nonlinear;At last, the paper summarized the whole contents, and put forward the further contents that would to be researched.

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CLC: > Transportation > Road transport > Tunnel project > Investigation, design and calculation > Design > Seismic Design
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