【摘要】 针对活动断裂带引起的隧道结构安全问题,依托四川棋盘石公路隧道,基于链式衬砌的抗错断设计理念,分析在逆断层错动时不同链式衬砌节段长度下,隧道结构围岩压力、塑形应变及最大主应力的变化规律与分布特征,探讨合理的衬砌节段设计长度,可为同类工程抗错断设计提供参考。更多还原

【Abstract】 Aimed at the safety problem of tunnel structure caused by active fault zone,the variation rule and distribution characteristics of surrounding rock pressure,plastic strain and maximum primary stress were analyzed under different length of chain lining segment while reversed fault was dislocating based on Qipanshi highway tunnel in Sichuan Province and the design philosophy of dislocation-resistance of chain lining.Reasonable design length of chain lining segment was put forward,which provides a guide to similar projects.更多还原