混凝土箱梁桥湿接缝受损受力特性研究

Study on the Mechanical Characteristics of Wet Joint Damage of Concrete Box Girder Bridge

为了研究不同湿接缝连接方式对混凝土箱梁受力特性的影响,文章依托某高速公路混凝土箱梁桥,借助Midas Civil有限元软件,采用梁格法建模,模拟了混凝土箱梁桥湿接缝在偏载和中载作用下的受力情况,并分析了不同湿接缝损伤程度下的横向分布系数。结果表明:湿接缝的连接方式对箱梁横向连接状况由直接影响;横向增大系数随着湿接缝损伤程度的增大而增大,为混凝土箱梁桥湿接缝的设计和维护提供参考和借鉴。

In order to study the influence of different wet joint connection modes on the mechanical characteristics of concrete box girder,the article relies on a concrete box girder bridge of an expressway.With the help of Midas Civil finite element software,the grillage method is used to model and simulate the concrete box girder bridge.The stress of the wet joint under partial load and medium load is analyzed,and the transverse distribution coefficient under different wet joint damage degrees is analyzed.The results show that the connection mode of wet joint has a direct influence on the transverse connection of box girder.The transverse increase coefficient increases with the increase of the damage degree of wet joints,which provides reference for the design and maintenance of wet joints of concrete box girder bridges.