3D Numerical Simulation of Shield Tunnel Subjected to Swelling Effect Considering the Nonlinearity of Joint Bending Stiffness

  • Qixiang Yan Southwest Jiaotong University
  • Chuan Zhang Southwest Jiaotong University and University of Houston
  • Wang Wu Southwest Jiaotong University
  • Hongxue Zhu China Construction Underground Space Co.
  • Wenbo Yang Southwest Jiaotong University

Abstract

In this paper, the authors developed a three dimensional shell-spring numerical model of a shield tunnel, in which the elastic shell elements were adopted to model the segments and the spring models were used for the simulation of the segmental joints. The highlight of this research is that the non-linearity of the joint bending stiffness was taken into consideration, which was first determined through the numerical simulation by using a refined 3D continuum model of the segment-joint structure. The automatic iteration of the joint bending stiffness was achieved through programming with the ANSYS ADPL software. Based on a specific engineering example, a 3D continuum-shell-spring model was established to analyze the internal forces of shield tunnel segmental linings subject to swelling soils. The developed numerical model and its application in the analysis of the internal forces of shield tunnel segmental linings in swelling ground will provide useful reference and guidance for the numerical calculation in similar engineering projects in future.

Keywords: numerical modelling, swelling ground, shield tunnel, joint bending stiffness, non-linearity
Published online
2019-06-17
How to Cite
Yan, Q., Zhang, C., Wu, W., Zhu, H., & Yang, W. 3D Numerical Simulation of Shield Tunnel Subjected to Swelling Effect Considering the Nonlinearity of Joint Bending Stiffness. Periodica Polytechnica Civil Engineering. https://doi.org/10.3311/PPci.13996
Section
Research Article