双曲拱桥加固后的承载力评估试验

Bearing Capacity Evaluation Test of Strengthened Double Arch Bridge

对主桥为8×60 m等截面箱肋单波双曲拱桥进行了结构验算和鉴定性荷载试验。根据验算及试验结果进行加固,并对其加固后的大桥进行荷载试验。加固前后试验结果表明,加固能有效提高结构的承载能力、改善结构性能。该加固方案可为同类桥梁的加固提供参考。

The paper conducts the structural calculation and the evaluation load test on the uniform box ribbed single arch wave and double arch bridge of the 8 ×60 m main bridge. Then, the bridge is strengthened based on the calculation and test result and the load test of the strengthened bridge is carried out. The test results of before and after reinforcement show that the reinforcement can effectively enhance the bearing capacity of structure and improve structural performance. Finally, the reinforcement plan can be used as reference for the reinforcement of the identical bridges.