大断面过水箱涵下穿高速公路立体交叉设计比选研究  

Study on Grade Separation Design Comparison of Large Cross-section Overflow Box Culvert under Highway

作　　者：蔡东明 吴金刚 CAI Dongming;WU Jingang(Beijing General Municipal Engineering Design & Research Institute Co. , Ltd. , Beijing 100082, China)

机构地区：[1]北京市市政工程设计研究总院有限公司,北京100082

出　　处：《中国水能及电气化》2020年第5期21-27,共7页China Water Power & Electrification

摘　　要：交通公路工程与输水渠道等水利工程立体交叉,历来是公路工程施工的难点。文章以北京市五支沟过六环节点以大断面箱涵形式下穿施工为背景,对下穿高速公路的施工方法进行比选。从横断面形式及尺寸、工程规模、路面沉降控制、施工难度及风险、施工质量、工期、造价7方面进行比较。结果表明,顶推法较暗挖法施工,具有路面沉降控制好、施工风险小、施工质量好、工期短且相对有保证等特点。比对内容及结果可供类似工程参考和借鉴。The grade separation of highway projects,water delivery channels and other water conservancy projects has always been a difficulty in highway project construction.The construction methods of the underpass expressway are compared and selected on the background of the underpass construction in the form of large section box culvert with Beijing Wuzhigou crossing the 6th ring road nodes.They are compared in 7 aspects of cross section form and size,project scale,pavement settlement control,construction difficulty and risk,construction quality,construction period and cost.The results show that the incremental launching method is compared with the concealed excavation method construction.It has the characteristics of good control on pavement settlement,low construction risk,good construction quality,short construction period and relative guarantee,etc.The comparison contents and results can be used as reference in similar projects.

关 键 词：大断面箱涵 下穿高速公路 顶推法 暗挖法 对比 

分 类 号：U41[交通运输工程—道路与铁道工程]