高速铁路大跨自锚上承式拱桥施工监控  

Construction Monitoring and Control of a Long Span High-Speed Railway Self-Anchored Deck Arch Bridge

作　　者：李大康 

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《桥梁建设》2011年第4期71-74,共4页Bridge Construction

摘　　要：沪杭高铁跨沪杭高速公路大桥为跨径(88+160+88)m的自锚上承式拱桥,该桥采用支架现浇、水平转体就位再合龙法施工。为确保施工安全及成桥后的线形满足铺设无碴轨道对桥面高平顺性的要求,采用MIDAS Civil 2010软件建立该桥有限元计算模型,根据实际的施工步骤进行各施工阶段计算分析;结合现代监控手段,对该桥施工全过程进行监控。监控结果表明,桥梁成桥时达到设计线形和应力状态,满足各规范及标准的要求。The bridge on Shanghai-Hangzhou High-Speed Railway spanning Shanghai-Hangzhou Expressway is a self-anchored deck arch bridge with span arrangement （88 ＋ 160＋88） m. The bridge was constructed mainly by the method of casting in situ on scaffolding, horizontally swinging in place and closing at midspan. To ensure the safety of the construction and that the geometric shape of the completed bridge could meet the requirements of deck smoothness for laying ballastless tracks, the software MIDAS Civil 2010 was used to establish the finite element calculation model for the bridge and the various construction stages in the actual construction procedures were calculated and analyzed. By way of the modern means, the whole process of the construction was monitored and controlled. The results of the monitoring and control show that at the completion stage of the bridge, the bridge can come up to the designed geometric shape and stress conditions and also can satisfy the relevant requirements in different codes and standards.

关 键 词：拱桥 自锚式 转体施工 有限元法 施工监控 

分 类 号：U448.223[建筑科学—桥梁与隧道工程] U445.1[交通运输工程—道路与铁道工程]