摘要
在下穿既有线隧道施工过程中,核心目标是保证既有线的正常运营.石家庄隧道为下穿既有石太客运专线的浅埋大跨双连拱铁路隧道.本文从隧道支护机理出发,介绍了该隧道的施工方案,内容包括隧道支护机理认识、下穿既有线总体方案、具体方案、既有线加固、施工工序、技术措施和相应的技术参数确定等,并应用midas-gts对开挖步序进行了数值模拟.经过施工实践,获得成功,可供类似工程参考.
When tunnel crossing under the existing line,the core objective is to ensure safety of the existing line operation.Shijiazhuang double-arch tunnel of shallow and large-span sites under the existing passenger railway line of Shijiazhuang to Taiyuan.This paper discusses the construction scheme of shijiazhuang tunnel.Based on tunnel support mechanism,the general and specific tunnel construction schemes,reinforcement of existing line,construction procedure and technical measures and parameters are introduced,a numerical simulation to it＇s construction is carried out by midas-gts.The scheme described in the paper has been proved to be very successful in practice,and provides a good reference to similar works.
出处
《昆明理工大学学报（理工版）》
北大核心
2010年第6期50-55,共6页
Journal of Kunming University of Science and Technology(Natural Science Edition)
关键词
客运专线
双连拱隧道
施工方案
下穿
浅埋
大跨
passenger railway line
double-arch tunnel
construction scheme
undercrossing
shallow
large-span
