某PC连续箱梁桥病害分析及体外预应力加固研究

Disease analysis and external prestressed reinforcement of a PC continuous box girder bridge

针对某PC连续箱梁桥病害情况进行调查,分析病害原因,采用体外预应力进行加固。加固完成后通过荷载试验检验加固效果。试验结果表明,加固后的连续箱梁桥强度和刚度满足设计荷载及规范的要求。

In this paper,the disease of a continuous box girder bridge was investigated,the cause of the disease was analyzed,and the external prestressing was used to reinforce the bridge. After reinforcement,the effect of reinforcement is tested by load test. The test results show that the strength and rigidity of the strengthened continuous box girder bridge meet the requirements of design load and code.