路基工程Issue(4)：57-63,7.DOI:10.13379/j.issn.1003-8825.2017.04.12
正断层下隧道结构受力特征及设防长度研究
Study on Mechanical Characteristics and Fortified Length of Tunnel Structure under Normal Slip Fault
摘要
Abstract
Taking the subway tunnel of Urumchi Metro Line 1,which steps over active fault,as the study object,the paper,on condition of the geometric and kinematic characteristics of near field region thereof and the regional seismotectonics,and on account of the longitudinal mechanical response in different cases of tunnel lining structure under the action of strike-slip movement of the active normal fault,calculated and analyzed by means of theoretical analysis and numerical simulation the laws how the longitudinal strain,principle stress,cracks and additional contact force between surrounding rock and primary support are distributed in the integral tunnel lining structure.The result shows that,where the buried depth increases from 10 m to 20 m,the tunnel structure's fortified limit has no obvious change;and where the fault dip increases from 60° to 80°,the fortified limit is reduced gradually.关键词
活动正断层/粘滑错动/隧道衬砌结构/纵向受迫影响/设防长度Key words
active normal fault/stick-slip movement/tunnel lining structure/longitudinal forced response/fortified length分类
天文与地球科学引用本文复制引用
张伟喜,孙飞,张志强..正断层下隧道结构受力特征及设防长度研究[J].路基工程,2017,(4):57-63,7.基金项目
国家自然科学基金(51478396) （51478396）
国家自然科学基金(51678503) （51678503）
