大跨明挖折板隧道对相邻设备区结构的影响  

Fluence of Long Span Open-cut Plate Tunnel on Structure of Adjacent Equipment Area

作　　者：陶荣杰 李建斐[1] 刘罡[1] 关少钰 谭海星 TAO Rongjie;LI Jianfei;LIU Gang;GUAN Shaoyu;TAN Haixing(CCCC First Highway Consultants Co.,Ltd.,Xi'an Shaanxi 710075,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710075

出　　处：《交通节能与环保》2023年第6期63-70,共8页Transport Energy Conservation & Environmental Protection

基　　金：科技创新基金项目(KCJJ2020-19)。

摘　　要：本文以石家庄市城区基础设施提升工程——白佛隧道附属设备区为研究对象,采用有限元计算软件进行数值计算,分析大跨直墙折板隧道结构由折板轴力产生的水平推力的受力机理及水平推力对相邻分离式设备区结构的作用,分析产生水平推力数值大小的影响因素,水平推力对设备区结构内力的影响,确定了分离式设备区结构合理的计算模型及设计方法。结果表明:大跨隧道折板结构的水平推力对相邻设备区侧墙内力影响较大。若设备区设计不考虑主线隧道折板的水平推力作用,会导致设计偏不安全。由此提出了设备区应采取的相应加强措施及减小隧道水平推力效应的措施。Taking the attached equipment area of Baifo Tunnel,an urban infrastructure upgrading project in Shijiazhuang City,as the research object,the finite element software is used for numerical calculation to analyze the mechanical mechanism of the horizontal thrust generated by the axial force of the folding plate and the effect of the horizontal thrust on the structure of adjacent separated equipment area in the large-span straight wall folding plate tunnel structure,and to analyze the influencing factors of the numerical size of the horizontal thrust.The effect of horizontal thrust on the internal force of the structure of the equipment area is discussed.The reasonable calculation model and design method of the structure of the separated equipment area are determined.The results show that the horizontal thrust of the folding plate structure of the long-span tunnel has a great influence on the internal force of the side wall of the adjacent equipment area.If the design of the equipment area does not consider the horizontal thrust effect of the folding plate of the main line tunnel,it will lead to unsafe design.According to the calculation results,this paper proposes the corresponding strengthening measures to be taken in the equipment area and measures to reduce the effect of horizontal thrust in the tunnel.

关 键 词：大跨明挖隧道 直墙折板 水平推力 分离式设备区结构 受压弹性连接 

分 类 号：U452.25[建筑科学—桥梁与隧道工程]