摘要
主塔顶横梁一般距桥面较高,普通支架体系很难满足工程需要。为此,研究了牛腿支架体系(包括三角牛腿、分配梁、贝雷梁、碗扣式脚手架和方木等)在主塔顶横梁施工的应用。从数值分析、现场施工及监测数据来看,该支架体系受力明确、合理,能够克服普通支架体系的不足,且便于施工,可为类似工程提供参考。
Usually, top crossbeams of main towers are high above the bridge deck, and the ordinary supporting system sometimes can hardly meet project needs. Therefore, study has been carried out on the corbel supporting system （ including triangle corbels, distributive girders, Bailey truss, cupola steel tubular scaffolding and wooden block） and its application in the construction of top crossbeams. From the perspectives of numerical analysis, the practical application and the monito- ring data, the support has the characteristics of clear and reasonable mechanical principles, and easy construction. It can provide reference for similar projects.
出处
《铁道建筑技术》
2013年第11期5-7,45,共4页
Railway Construction Technology
基金
自锚式悬索桥施工关键技术研究(中铁建设集团有限公司科技研发计划LX11-19)
关键词
主塔顶横梁
牛腿支架
设计
悬索桥
应力监测
top crossbeams of main towers
corbel support
design
suspension bridge
stress monitoring
