特长公路隧道取消变形缝试验研究  

Long highway tunnel experimental study on the abolition of deformation joint

作　　者：卓越[1] 邹翀[1] 闫自海[2] 

机构地区：[1]中国中铁隧道集团有限公司,河南洛阳471009 [2]西南交通大学,成都610031

出　　处：《中国工程科学》2009年第7期59-65,共7页Strategic Study of CAE

摘　　要：结合包家山隧道的施工情况,利用数值模拟和现场试验两种方法,对设置变形缝和不设置变形缝两种工况下衬砌结构的受力、变形及安全性进行了对比分析。研究认为:a.无论设置变形缝与否,隧道纵向的安全性要求均能满足。b.对于隧道结构的横向安全性,不设置变形缝时,Ⅴ级围岩端的安全系数增加,Ⅳ级围岩端的安全系数减小,此时需要进行配筋;设置变形缝时,Ⅳ级和Ⅴ级围岩处的拱顶安全系数均较小,不能满足安全要求,此时需要进行配筋。Based on the construction of Baojiashan tunnel, the authors used numerical simulation and field test to analyze lining force, deformation and safety in the conditions of setting deformation joint and not. Studies suggest that ： a. whether deformation joint is set or not, tunnel＇ s vertical safety can meet the security requirements ; h. if we do not set deformation joint for tunnel structure of the horizontal safety, the safety factor increases in Ⅴ grade rock side, decreases in Ⅳ class rock side and reinforcement is needed at this time ; when deformation joint is set, Ⅳ and Ⅴ grade-level department of dome rock safety factors are smaller and can not meet the safety requirements, then reinforcement is needed.

关 键 词：特长公路隧道 变形缝 定量指标 数值模拟 试验研究 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]