摘要
对有限元强度折减法在地下过街道稳定性分析中的应用进行了探讨,并模拟计算了在无支护、超前初次支护和二次衬砌条件下地道的开挖稳定安全系数,结果表明:无支护条件下,安全系数小于1.0,过街道不稳定;采取超前支护及加固措施后,安全系数大于1.0,但不满足规范要求;采用二次衬砌后,安全系数达到1.5,满足规范标准要求。
The finite element strength reduction method has been applied to the analysis of stability of underpass across street. Under without advancing support, initial support and secondary lining, tunnel excavation stability safety factors were modeled using the finite element strength reduction method. The results showed that： under without supporting, the safety factor is less than 1.0 and the underpass across street unstable ; after to use advance supporting and reinforcement measures, safety factor is greater than 1.0, but malcontents specification requirements; after to use secondary lining, safety factor is 1.5, satisfies the requirement of specification.
出处
《山西建筑》
2013年第19期50-51,共2页
Shanxi Architecture
关键词
地下过街道
强度折减法
稳定性
有限元
underpass across street
strength reduction method
stability
FEM
