铁道标准设计2016，Vol.60Issue(10)：76-80,81,6.DOI:10.13238/j.issn.1004-2954.2016.10.018
动力作用下盾构隧道接头破坏行为研究
Study on Destruction Behavior of Shield Tunnel Joint under Dynamic Loads
摘要
Abstract
In order to reveal the destruction behavior of shield tunnel joint under high speed train dynamic impact, a three-dimensional numerical model of shield tunnel is established to compare the destruction status of segment joints under two different operating conditions with or without bolts cracking, and the propagation process of the cracking of segment joints and joint bolts is followed. The results show that the cracking of joint bolts has great influence on the cracking of segment longitudinal joints, the completely destroyed elements won’t appear in the crack in segment longitudinal joints if joint bolts crack, but its opening will become greater. The place where the crack first appears on the segment longitudinal joints is always located at the bending bolt, and the circular bending bolt always tends to suffer circular fracture failure, and the longitudinal straight bolt often encounters longitudinal stripping failure.关键词
盾构隧道/动力作用/管片衬砌/接头螺栓/开裂行为Key words
Shield tunnel/Dynamic loads/Segment lining/Joint bolts/Cracking behavior分类
交通工程引用本文复制引用
李彬,李彬嘉,晏启祥,林文凯..动力作用下盾构隧道接头破坏行为研究[J].铁道标准设计,2016,60(10):76-80,81,6.基金项目
国家自然科学基金项目(51278425) （51278425）
中国铁路总公司科技研发课题(2014G004-H) （2014G004-H）
