摘要
依托郑西客运专线函谷关黄土隧道工程背景,以解决高速铁路大断面黄土隧道关键施工技术为出发点,应用大型通用有限元软件ANSYS为计算手段,在埋深25 m条件下分别研究CRD法、CD法和三台阶法三种施工方法,从地表变形与隧道变形、支护结构内力和围岩塑性区范围出发,通过比较分析,给出相应条件下的推荐施工方法。
Relying on the background of Hanguguan loess tunnel project of Zhengxi passenger dedicated line, on the purpose of solving the key construction technique problems of large section loess ttmnel in high-speed railways, and by using a general FEM program ANSYS, different construction method in different buried depth were simulated and analyzed. Concretely different construction methods such as CRD method （center cross diagram method）, CD method （center diagram method）, and three benches tunneling method were studied respectively under buried depth 25m and by comparing the earth surface deformation, tunnel deformation, internal force of support structure and plastic zone of surrounding rock, suggested construction method in the condition was given.
出处
《石家庄铁路职业技术学院学报》
2008年第1期1-5,共5页
Journal of Shijiazhuang Institute of Railway Technology
关键词
黄土
隧道
施工方法
loess
tunnel
construction method
