一座大跨径双曲拱桥的承载能力鉴定

The load-bearing capacity evaluation of long-span double arch bridge based on upper structure checking method

对一座单孔跨径80 m的双曲拱桥拱波顶部存在的纵向裂缝进行了介绍,该裂缝整段贯通,且该桥一侧拱肋明显下沉,通过病害检查、材料强度测试、线形测量和结构检算,确认该桥承载能力已不能满足通行现有荷载等级的要求。

Introduced the longitudinal cracks existing in elouble-curved arch bridge wave top of a single hole span 80 m, and its arch rib subsi- ded obviously. Based on condition check, tests of material strength, line shape measurements and structure checking, we affirmed that the load- bearing capacity of the bridge was not fit to existing loads.