某大桥模数式伸缩缝病害机理探讨

Discussion on Fault Mechanism of Modulus Expansion Joint of a Bridge

伸缩缝是桥梁构造的重要组成部分,桥梁伸缩缝一旦损坏,将对行车安全和桥梁结构寿命产生重要的影响。介绍了某大桥模数式伸缩缝纵、横梁断裂病害情况的调查,着重从伸缩缝材质、几何截面尺寸和受力荷载等技术标准方面对病害原因进行了计算分析和探讨,可为桥梁建设和养护管理提供参考。

The expansion joint is an important component of bridge structure. The bridge expansion joint if damaged will bring the important influence on the driving safety and the service life of bridge structure. The article introduces the investigation of the cracking faults of longitudinal beam and crossbeam with modulus expansion joints of a bridge, and calculates, analyzes and discusses the fault causes specially from the technical standards of expansion joint material, geometry section dimension and stress load, which can be referenced for the construction, curing and management of bridge.