大跨钢管混凝土拱桥病害分析与加固设计要点

Disease Analysis And Strengthening Design ofLong-span Concrete-filled Steel Tube Arch Bridge

总结了上世纪90年代钢管混凝土拱桥的设计特点,综合分析该类结构运营期间的病害问题,最后以广西柳南高速六景郁江桥为典型案例,梳理其历年病害及加固历程,并对主要病害进行分析,最终提出加固方案。通过实桥测量数据及有限元计算分析相结合的方式印证了加固方案合理性,可供同类型结构加固设计借鉴。

This paper summarizes the design features of CFST arch bridges in the 1990s,and analyzes the diseases during the operation period of such structures.Finally,taking Liujingyujiang bridge of Liunan Expressway in Guangxi as a typical case,it combs the diseases and reinforcement process over the years,analyzes the main diseases,and finally puts forward the reinforcement scheme.Through the combination of the real bridge measurement data and the finite element calculation and analysis,the rationality of the reinforcement scheme is verified,which can be used for reference in the reinforcement design of the same type of structure.