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外倾式非对称拱桥是由倾斜的非对称钢拱肋、曲线钢箱梁和倾斜的吊杆共同组成的多元空间结构体系,属于特殊的空间拱桥,受力行为复杂。笔者在总结分析该桥型的力学特点和安装施工特点的基础上,对其总体安装方案进行了分析比选,指出少支架辅助支撑的跨桥大吨位龙门吊架设法应作为该桥型施工的推荐方案。
Asymmetrical arch bridge is composed of inclined asymmetric steel arch ribs, curved steel box girder and inclined boom composed of multiple spatial structure system, belonging to a special space arch bridge, the force behavior is complex. On the basis of summarizing and analyzing the mechanical characteristics of the bridge and the characteristics of installation and construction, the author analyzes and compares the overall installation plan, and points out that the method of constructing a large-tonnage gantry crane with less support and supporting should be taken as the recommended construction of the bridge Program.