摘要
当大断面隧道穿越上软下硬地层时,出于安全、成本及进度等综合考虑,单一的开挖方法往往不能满足施工要求,恰当的开挖方法需要在理论计算的指导下不断试验、分析和总结,才能有所突破。结合ANSYS10.0有限元计算软件和施工监测结果,对上软下硬地层中大断面隧道施工方法做了深层次的分析,通过对多种工法的实际量测结果的比较、分析,得出一些施工参数,可为类似地层施工借鉴,可为类似工程借鉴。
Excavating a large-section tunnel in the upper soft and lower hard stratum needs to adopt appropriate construction program, because traditional excavation methods may not meet the request of safety, cost and working progress. The finite element software ANSYS10.0 and the monitoring data are used to analyze the construction method of the large-section tunnels in the stratum with upper soft and lower hard layers in this paper. Through comparing the results from various construction methods, some parameters are presented which can be used in other constructions in the similar stratum.
出处
《隧道建设》
2007年第S2期433-436,共4页
Tunnel Construction
关键词
上软下硬
CRD
上台阶拱部导坑法
大断面
数值模拟
upper soft and lower hard stratum
CRD
bench cut and crown drift method
large-section tunnel
numerical simulation
