某悬链线钢筋混凝土箱型拱公路桥梁检测与加固设计

Inspection and Reinforcement Design of a Catenary Reinforced Concrete Box Arch Highway Bridge

针对某悬链线钢筋混凝土箱型拱公路桥梁现有病害及可能存在的承载能力不满足正常设计荷载的使用要求的问题,对桥梁进行结构检测与评估,在检测过程中设计静载和动载试验,并布置测点,测量桥梁的实际指标,同时对桥梁进行有限元分析,得出理论指标,确定桥梁的刚度和在正常设计荷载下的承载力情况,最后对存在的缺陷和结构刚度和承载力问题进行加固设计。

In view of the existing diseases of a catenary reinforced concrete box arch highway bridge and the possible bearing capacity not meeting the requirements of normal design load,the structural testing and evaluation of the bridge were carried out.During the testing process,static and dynamic load tests were designed,and measurement points were arranged to measure the actual index of the bridge.At the same time,the finite element analysis of the bridge was carried out to obtain the theoretical index.The stiffness and bearing capacity of the bridge under normal design load are determined.Finally,the existing defects and structural stiffness and bearing capacity problems are reinforced.