下承式连续梁-拱组合桥施工方案比选研究  

Research on comparison and selection of construction schemes for down-bearing continuous beam-arch composite bridge

作　　者：李杰[1,2] 胡钦侠 朱金柱 LI Jie;HU Qin-Xia;ZHU Jin-zhu(CCCC Second Harbor Engineering Co.,Ltd.,Wuhan,Hubei 430040,China;State Engineering Research Center for Highway&Long-Span Bridges Construction,Ltd.,Wuhan,Hubei 430040,China;Key Laboratory of Transportation Sector for Long-Span Bridge Construction Technique,Wuhan,Hubei 430040,China;Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure,Wuhan,Hubei 430040,China)

机构地区：[1]中交第二航务工程局有限公司,湖北武汉430040 [2]中交公路长大桥建设国家工程研究中心有限公司,湖北武汉430040 [3]长大桥梁建设施工技术交通行业重点实验室,湖北武汉430040 [4]交通运输行业交通基础设施智能制造技术研发中心,湖北武汉430040

出　　处：《中国港湾建设》2023年第2期84-88,104,共6页China Harbour Engineering

摘　　要：余信贵大道月湖特大桥主桥为(30+185+30)m下承式连续梁-拱组合桥,根据连续梁-拱组合桥结构特点、桥位地形地貌、环境及交通条件,综合技术可行性、经济合理性、安全可控性3方面对缆索吊施工和顶推施工2种施工方案进行比选研究,研究结果表明:缆索吊和顶推施工方案在技术可行性上均可实现,但缆索吊施工方案临时锚固力大且临时系杆张力大和张拉空间有限,高空作业风险偏大,而顶推施工经济性较好、工期相对较短、风险性更低。综合考虑推荐在顶推施工的基础上进行施工方案深化及优化设计。The main bridge of the Yuehu Bridge on Yuxingui(Yujiang-Xinjiang-Guixi)Avenue is a(30+185+30)m down-bearing continuous beam-arch composite bridge.A research on comparison and selection of two construction schemes,i.e.,cable hoisting installation and jacking installation,was made according to the structural characteristics of a continuous beam-arch composite bridge,the topography of bridge location,the environmental and traffic conditions,as well as the technical feasibility,economic rationality,and safety controllability.The results of research show that,both cable hoisting and jacking schemes can be realized in terms of technical feasibility,but in the cable hanging scheme,the temporary anchoring force is large,the temporary tie rod has a larger tension and the tension space is limited,and the risk of high-altitude operation is too high;while in the jacking scheme,it is more economical,the construction period is relatively short and has a lower risk.It is recommended after comprehensive consideration that a construction plan is deepened and its design is optimized on the basis of the jacking scheme.

关 键 词：桥梁工程 连续梁-拱组合桥 缆索吊施工 顶推施工 方案比选 有限元分析 

分 类 号：O655.4[理学—分析化学] U445.46[理学—化学]