钢管少支架在山区高墩现浇箱梁中的应用.pdf

2015年11月上 施工技术 第44卷第21期 CONSTRUCTION TECHNOLOGY 123 D0I:10.7672/8gis2015210123 钢管少支架在山区高墩现浇箱梁中的应用 光明，姚斐，王静华 (中交一公局第一工程有限公司，北京102205) [摘要]通常情况下，现浇箱梁施工采用满堂支架，但对于山区地势陡峭、支架高度较高、横坡较大的现浇箱梁而 言，采用钢管少支架，即钢管柱和贝雷片作为支架，能够大大提高支架的安全性，同时还可以减少人员、材料的投 人.结合麻城至武穴高速公路木子店互通C匝道4-12号墩之间现浇箱梁施工实例，着重介绍墩高达38m、横坡 6%情况下钢管少支架的组成结构、受力验算以及在施工中的应用. [关键词]桥梁工程；钢管贝雷支架；山区高墩；现浇箱梁 [中图分类号]TU731.2 [文献标识码]A[文章编号]1002-8498(2015)21-0123-03 Application of Scaffolds with Less Steel Tube for Cast-in-situ Box Girder with High Piers in Mountain Area Guang Ming Yao Fei Wang Jinghua No.1 Engineering Co.Ltd.of FHEC of CCCC Beijing 102205 China) Abstract:The cast-in-situ box girder always constructed with full scaffolds but for the steep mountain terrain because of large height support and large slope cast-in-situ box girder constructing with scaffolds with less steel tube steel tube column and bailey as a scaffold can greatly improve the safety of the scaffolds it can also reduce the personnel and material inputs.With the example of the construction of the cast-in-situ box girder between the Macheng and Wuxue highway the bridge between ramp C and No.4 to No.12 piers the structure and the stress calculation and the application of the steel tube under the condition of 38m and cross slope 6%are mainly introduced. Key words:bridges;steel pipe bailey;mountain high piers;cast-in-situ box girders 1工程概况 4×20.5(20.5212019)(202820) 本项目北起麻城，南通武穴，将沪蓉、武英、沪4×20.75(20282020)，桥梁上部结构 渝3条东西向高速公路连线成网，是济广国家高为第1 5联为预应力钢筋混凝土连续箱梁，单箱 速和大广...