To explore the influence of lining components and soil
environment on the nonlinear mechanical response of shield tunnel lining,
first, the characteristics of rotational stiffness of longitudinal joints
derived from the experiments are discussed, and it is believed that the
stiffness is controlled by axial force and bending moment. The iterative
calculation methods both in analytical and numerical methods are summarized,
where the nonlinearity of the joints is considered. Second, the segment′s
tests for the cracking characteristics and bearing capacity and the numerical
modeling techniques that can consider its nonlinearity are reviewed. And it is
concluded that the cracking behavior of concrete has a certain adverse effect
on the overall lining, while the behavior of joints is the dominant factor.
Third, the treatment methods for soil nonlinearity in common calculation
methods are summarized. Several test methods that can further consider the soil
nonlinearity are listed. Finally, the development trend of nonlinear analysis
methods for shield tunnel lining is prospected. It is recommended to carry out
further research on the nonlinear mechanical response of shield tunnel,
especially on the bending behavior of longitudinal joints coupled by multiple
factors, the cracking, and softening behavior of segments considering material
deterioration and fatigue effect, the interaction between soil and lining
considering timespace effect. The material library of
various joints and multidirectional soil springs should be further established,
and the gradual destruction mechanism of lining needs ascertained.
Conclusively, the quick calculation and analysis methods of shield tunnel
lining based on big data are suggested.
WANG Jinchang, XIE Jiachong, HUANG Weiming
. Review on Nonlinear Mechanical Response Analysis of
Shield Tunnel Lining[J]. Tunnel Construction, 2021
, 41(S2)
: 22
-35
.
DOI: 10.3973/j.issn.2096-4498.2021.S2.003