复合式TBM重叠隧道施工下层支撑体系计算探讨

摘要

随着我国城市轨道交通的不断发展,轨道交通网络越来越密集,人们的出行也越来越方便.但受城市地域和建筑物等因素影响,城市轨道施工中会不可避免地出现线路交叉和重叠现象.以重庆轨道交通5号线冉家坝—大龙山—大石坝区间复合式TBM重叠隧道施工为例,对下层支撑体系进行计算,计算结果可供类似工程施工参考.%With the development of urban rail traffic in China, the rail traffic network is getting more condensed, which has facilitated people ' s travel. However, due to topography and urban buildings, unavoidably line cross and overlapping occurs in urban rail construction. This paper, taking composite TBM overlapping tunnel construction in Chongqing No. 5 rail traffic Ranjiaba-Dalongshan-Dashiba section as example, carried out calculation to lower supporting system, the results of which may be used as reference for future similar project construction.