Abstract：Detailed numerical analysis was conducted to explore the influences
of segments cracks on dynamic response of shield tunnel in
operation. Three-dimensional solid elements are adopted to stimulate
lining structures; Goodman elements and connecting springs were
respectively applied to stimulate cracks and joints. Dynamic
responses of shield tunnel with cracks under train moving loads were
discussed. Research shows that the influences on displacement
response of segment are very tiny, while stress responses are
significantly impacted by the cracks. Stress responses of segments
greatly change in the cracking. So cracks should be fully
considered. Distribution of deformation and stress of cracking side
are obviously different from non-cracking side, and therefore using
single-plane stress elements to simulate segments is not adequate.
The reflection of vibration wave enhances and dynamic response is
more intense in the cracking. The intense response area of ground is
mainly in a certain range that around the tunnel. The closer to the
bottom of lining segment, the more intense the response is.
Chunshan Yang;Haihong Mo;Junsheng Chen;Jing Wang. Numerical Analysis of Influences Caused by Lining Cracks on Dynamic Response of Shield Tunnel During Metro Operation[J]. , 2014, 11(11): 3835-3846.
Chunshan Yang;Haihong Mo;Junsheng Chen;Jing Wang. Numerical Analysis of Influences Caused by Lining Cracks on Dynamic Response of Shield Tunnel During Metro Operation. , 2014, 11(11): 3835-3846.
2014, Vol. 11 
