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本文主要针对跨径20m的简支转连续梁箱梁桥进行施工阶段模拟分析,分析对比了该类桥梁使用单、双排支座在恒载、活载、温度荷载及支座沉降等荷载作用下桥梁结构控制点的弯矩、挠度、应力等效应,同时对比了两种结构的动力特性及振型,并得出了使用双排支座比使用单排支座更为有利的结论,供有关技术人员参考。
In this paper, the construction stage of the simply supported continuous beam box girder bridge with a span of 20m is simulated and analyzed. The effects of such single, double-row bearings under constant load, live load, temperature load and bearing settlement are analyzed and compared The bending moment, deflection and stress of the control points of the lower bridge structure. The dynamic characteristics and mode shapes of the two structures are also compared. The conclusion that the double-row bearing is more advantageous than the single-row bearing is obtained. For technical staff reference.