Study on Seismic Dynamic Response Rules of Tunnel Portal
In this paper three-dimensional seismic dynamic responses of tunnel portal are modeled by FLAC. Seismic response rules of tunnel lining and rock mass are acquired from calculating. Some conclusions are presented as follows:(A) Rules of Displacement: the displacement peak obviously lags behind earthquake action, that means that the displacement values caused by seismic dynamic response will come to maximize after the maximum acceleration caused by earthquake action;(B) Rules of Stress: the maximal displacement values increase with depth-span ratio, and then barely grow when depth-span ratio reaches a certain value;(C) Rules of Plastic Zone: Plastic zone are remarkable developed around the surrounding of tunnels. For tunnel structures, Plastic zone grow apparently nearby their left-nance-vault-right-hance, and inverted arch.
Tunnel Tunnel portal Seismic dynamic responses Anti-seismic
Jia Jia-xin Shi Lei
The Design Institute Of Civil Engineering & Architecture Of DUT DaLin,China Faculty of infrastructure Engineering Dalin University of Technology ,Dalian University of Technolog
国际会议
2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)
大连
英文
2073-2076
2010-07-05（万方平台首次上网日期，不代表论文的发表时间）