双曲拱桥承载能力评估及养护对策

Bearing Capacity Evaluation and Maintenance Countermeasures forDouble Curved Arch Bridge

针对建成运营超46年的彭坑大桥双曲拱桥,通过静载试验和动载试验并结合有限元分析,对桥梁承载能力进行评估,探讨其受力特征。结果表明:该双曲拱桥处于弹性工作状态,结构实际刚度大于理论刚度;通过现场调查掌握双曲拱桥主要病害,分析病害成因,并提出养护对策。

Aiming at the double curved arch bridge of Pengkeng Bridge, which has been built and operated for more than 46 years, the bearing capacity of the bridge has been evaluated and its stress characteristics have been discussed through static load test, dynamic load test and finite element analysis. The results of load test and finite element analysis have shown that the double curved arch bridge is in elastic working state, and the actual stiffness of the structure is greater than the theoretical stiffness;The causes of diseases have been analyzed, with maintenance and rehabilitation strategies being proposed through field investigation for the main diseases of the double curved arch bridge.