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Volume 37 Issue 10
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ZHUANG Xiao-ying, ZHANG Xue-jian, ZHU He-hua. 3-D finite element model for destruction process of segment joints of shield tunnel using elastoplastic and damage constitutive methods[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(10): 1826-1834. DOI: 10.11779/CJGE201510011
Citation: ZHUANG Xiao-ying, ZHANG Xue-jian, ZHU He-hua. 3-D finite element model for destruction process of segment joints of shield tunnel using elastoplastic and damage constitutive methods[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(10): 1826-1834. DOI: 10.11779/CJGE201510011
shu

3-D finite element model for destruction process of segment joints of shield tunnel using elastoplastic and damage constitutive methods

  • 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;
    2. Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education,Tongji University, Shanghai 200092, China;
    3. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China

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  • Received Date: September 20, 2014
  • Published Date: October 19, 2015
    Graphical Abstract
    • Abstract
  • Using the elastoplastic and damage constitutive methods for concrete respectively, a 3-D FEM model for segment joints of shield tunnel is established to simulate the process of bending failure under positive and negative loads. By comparing the simulated results with the experimental data, at the initial stage, the deformation curve is almost coincident with the FEM using the elastoplastic and damage constitutive methods, and both of them show a good agreement with the test results. With the increasing load, the results using the damage constitutive method are closer to the experimental values, and it can simulate the dropping process of structural bearing capacity better. Through the convergence analysis of FEM, the rationality of mesh generation is proved, and the grid sizes of similar element models are suggested. Finally, based on the simulated results, some evaluation indices for health assessment of segment joints are proposed.
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    • References (22)
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