岩土力学2012，Vol.33Issue(11)：3345-3351,7.
隧道复合式衬砌初期支护极限状态模型试验研究
Model testing research on limit state of primary support in composite lining tunnels
摘要
Abstract
The composite lining is the most frequently used form of lining in new tunnels and existing tunnels. The situation, which is the deterioration or even failure of primary support, will appear inevitably in the long-term operation; and it will reduce the bearing capacity and the durability of the tunnel system. Based on indoor model test, the members of primary support are made by deteriorated gypsum model. The deterioration process is simulated and the state change of secondary lining structure is recorded. The variation of bearing capacity of tunnel is determined by increasing load. The results show that the deterioration of steel frame and shotcrete layer has larger impact on secondary lining structure than the bolt deterioration. Failure of the primary support does not result in destruction of the lining structure; and the secondary lining has adequate safety redundancy. The deterioration of primary support members will reduce the bearing capacity of the tunnel structure system. The effect of anchors is obvious, but the effects of steel frame and shotcrete layer are little.关键词
复合式衬砌/初期支护/模型试验/劣化/失效/承载能力Key words
composite lining/ primary support/ model test/ deterioration/ failure/ bearing capacity分类
交通工程引用本文复制引用
冯冀蒙,仇文革,王航..隧道复合式衬砌初期支护极限状态模型试验研究[J].岩土力学,2012,33(11):3345-3351,7.基金项目
铁道部重大科研计划(No.2009G005-E) （No.2009G005-E）
中央高校基本科研业务费专项资金资助(No.SWJTU11ZT33). （No.SWJTU11ZT33）
