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宿淮铁路京杭运河特大桥最大跨为132m的连续梁-拱组合桥,钢管拱拼装跨度大,难度高,拱肋线形控制难度大。结合现场实际情况,通过方案比选,确定采用立柱式拱架法浮吊+汽车式起重机吊装方式进行钢管拱肋安装。同时对拱肋拼装各个阶段线形测量控制及要点进行详细阐述。钢管拱的施工顺利完成,并确保了工程质量和安全。
Su-Huai Railway Beijing-Hangzhou Grand Canal maximum span of 132m continuous beam - arch composite bridge, steel arch assembly span, high difficulty, arch ribs linear control difficult. Combined with the actual situation on site, through the program comparison and selection, to determine the use of column-type arch floating crane crane lifting way for the installation of steel pipe arch ribs. In the meantime, the linear measurement control and key points in each stage of arch assembly are elaborated. The construction of steel pipe arch has been successfully completed and the project quality and safety have been ensured.