以太子河大桥检测加固为工程背景,阐述了该桥加固前的工况,介绍了简支变连续和增大截面法的加固方案,利用MIDAS软件对实施加固后的梁体进行模拟计算,将计算结果与动静载试验检测数据进行对比,分析两种结果在桥梁变形和承载能力指标上的偏差,从而得出模拟分析的准确性,为判断桥梁加固效果提供理论依据。 The test and reinforcement of the Taizi River Bridge is taken as the engineering background, the working condition of the bridge before reinforcement is expounded, the reinforcement scheme of simple continuous and enlarged section method is introduced, and the reinforced concrete girder is simulated by using MIDAS software. The calculated results are compared with the dynamic and static load test data to analyze the deviations of the two results in the deformation and load carrying capacity of the bridge. The accuracy of the simulation analysis is thus obtained, providing a theoretical basis for judging the reinforcement effect of the bridge.