某变截面连续箱梁桥病害分析与加固设计要点

Disease Analysis of a Variable Cross-Section Continuous Box Girder Bridge and the Key Points of Reinforcement Design

为了研究分析变截面连续箱梁桥的病害以及加固设计的要点,论文以某工程实例中的3跨变截面预应力凝土箱梁连续刚构桥为研究对象,阐述了该桥的结构类型、各构建的尺寸以及其设计参数,对桥梁的病害成因进行了分析和探讨,采用有限元软件对桥梁进行荷载及结构验算,最后对该桥梁提出了加固方案,为今后变截面连续箱梁桥病害分析及加固提供了参考。

In order to study and analyze the diseases of variable cross-section continuous box girder bridge and the key points of reinforcement design,this paper takes the 3-span variable cross-section prestressed concrete box girder continuous rigid frame bridge as the research object,expounds the structural types,dimensions and design parameters of the bridge,analyzes and discusses the causes of the bridge damage,uses the finite element software to check the load and structure of the bridge,and finally puts forward the reinforcement scheme for the bridge,which provides reference for the future damage analysis and reinforcement of the continuous box girder bridgewith variable section.