钢筋混凝土连续梁桥牛腿开裂及加固模型试验研究

Model experimental study on crack and reinforcement of RC continuous bridge's bracket

针对钢筋混凝土连续梁桥牛腿开裂的病害情况,以成都市三环路牛龙路立交桥为依托工程,以Ansys大型有限元分析软件仿真分析为理论基础,分别对主桥和B匝道桥下牛腿部位进行了开裂及加固模型试验,得到连续梁牛腿开裂及加固前后的受力情况,寻求合理、有效的加固方法,为连续梁开裂牛腿的加固难题的解决提供借鉴资料。

In view of the disease situation of the RC continuous beam bridge＇s bracket, depended on the project of the NIU LONG LU flyover and the finite element analysis software Ansys, the model experiment of the bracket in the main bridge and B ramp was carried on, the reasonably and effective reinforcement method was sought from the bracket＇s before and after cracking and reinforcement. Hoped that the experimental study achievement can provide the reference information for the bracket reinforcement method of other similar bridges.