Numerical analysis of influences caused by lining cracks on dynamic response of shield tunnel during metro operation

被引：0
作者：
机构：
[1] Civil and Transportation Institute, South China University of Technology, Guangzhou
来源：
Chen, Junsheng | 1600年 / Binary Information Press卷 / 11期
关键词：
Cracks; Detailed model; Dynamic response; Lining structures; Numerical analysis; Shield tunnel;
D O I：
10.12733/jics20104086
中图分类号：
学科分类号：
摘要：
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. ©2014 Binary Information Press
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页码：3835 / 3846
页数：11
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