基于悬拼钢拱架法的钢筋混凝土拱桥主拱圈现浇施工关键技术及数值模拟  

Key Technology and Numerical Simulation of Cast-in-Place Construction of Main Arch Ring of Reinforced Concrete Arch Bridge Based on Suspension Steel Arch Method

作　　者：粟学平 夏争志 吕松刚 段朋杰 吕毅刚 SU Xueping;XIA Zhengzhi;LYU Songgang;DUAN Pengjie;LYU Yigang(CCCC Guangzhou Waterway Bureau Co.,Ltd.,Guangzhou,Guangdong 510290,China;CCCC Dredging(Group)Co.,Ltd.,Beijing 100120,China;Highway Construction and Maintenance Center of Shaoyang County,Shaoyang,Hunan 422100,China;School of Civil Engineering,Changsha University of Science and Technology,Changsha,Hunan 410114,China)

机构地区：[1]中交广州航道局有限公司,广东广州510290 [2]中交疏浚(集团)股份有限公司,北京市100120 [3]湖南省邵阳县公路建设养护中心,湖南邵阳422100 [4]长沙理工大学土木工程学院,湖南长沙410114

出　　处：《中外公路》2024年第2期191-200,206,共11页Journal of China & Foreign Highway

基　　金：湖南省自然科学基金资助项目(编号:2022JJ30600)。

摘　　要：钢拱架代替落地支架或节段悬臂拼装等施工方法,应用于山区跨越深水峡谷的拱圈现浇具有一定的优势,值得推广应用。该文通过介绍三岔河大桥钢拱架悬臂扣索法拼装、拱架水箱法预压和主拱圈分环分层浇筑等关键施工技术,有效地解决了跨越深水峡谷桥梁施工过程中的常见难题,并基于Midas Civil有限元方法整体建模,对其采用的关键施工技术进行了数值模拟分析,指导并监控了该桥的施工建设,可为类似工程施工及受力计算分析提供借鉴。Steel arch frame replaced such construction methods as floor bracket or segment cantilever assembly and it was applied to arch circle cast-in-place across deep water canyons in mountainous areas,which had certain advantages and was worth promoting and applying.By introducing the key construction technologies of Sanchahe Bridge,including steel arch frame cantilever fastener method assembly,arch water tank method precompression,and main arch ring layered pouring,the common problems in the construction process of crossing the deep water canyon were solved effectively.Based on Midas Civil overall modeling of finite elements,the key construction technologies adopted by the bridge were numerically simulated and analyzed,and the successful construction of the bridge was guided and monitored,aiming to provide a reference for similar engineering construction and force calculation and analysis.

关 键 词：钢筋混凝土拱桥 钢拱架 主拱圈 关键技术 数值模拟 

分 类 号：U445.469[建筑科学—桥梁与隧道工程]