刚架拱桥的病害分析及承载力评定

Analysis of Faults and Evaluation of Bearing Capacity of Rigid Frame Arch Bridge

通过对兰州市某刚架拱桥进行状态检测,分析结构存在的病害,并针对病害产生的原因进行分析。为进一步了解刚架拱桥是否存在隐蔽病害,结构的整体受力性能和动力性能是否满足现行运营要求,对桥梁进行荷载试验,从而对在役结构的承载力进行评定,可为同类桥梁的承载力评定提供参考依据。

The article analyzes the faults existing in the structure of a rigid frame arch bridge in Lanzhou by the test inspection of its status, and analyzes the fault causes. In order further to understand whether or not there are hidden faults existing in the rigid-frame arch bridge, and the integrated loaded property and dynamic performance of structure meet the requirements of the current operation, the load test is carried out to the bridge so as to evaluate the bearing capacity of the structure under service, which can provide the reference for the bearingcapacityevaluation ofthesimilar bridges.