›› 2005, Vol. 26 ›› Issue (5): 710-716.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Numerical simulation of shield tunnel dynamic response to earth motions taking account of anisotropy of layered soil

ZHU Yan-zhi1,2, FENG Zi-liang1, FANG Zhi1   

  1. 1.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Department of Civil Engineering and Architecture, Zhongyuan Istitute of Technology, Zhengzhou 450007, China
  • Received:2003-12-04 Online:2005-05-10 Published:2013-12-17

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Abstract: The anisotropic elastoplastic model of layered soil is established to solve seismic response analysis of shield tunnel systems in layered soil. The doubly asymptotic multi-directional transmitting boundary for transversely isotropic medium is formed. Based on anisotropic elastoplastic model of layered soil, the dynamic finite element program of layered, transversely isotropic soil-structure dynamic interaction is developed according to the characteristics of aseismic design for shield tunnel. To simulate shield tunnel with finite element, various stress-strain models and element models are adopted in the program. The seismic response analysis of the district tunnel of Metro Line No.2 in Shanghai is carried out using the developed finite element program. The calculation results show that the dynamic finite element model of layered, transversely isotropic soil-structure is feasible and applicable. And the results show that it is necessary to take account of anisotropy of layered soil effect in the seismic analysis of shield tunnel system in layered soil.

Key words: shield tunnel, transversely isotropic, doubly asymptotic multi-directional transmitting boundary, dynamic analysis

CLC Number: 

  • TU 435
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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