上海铁路局地处华东四省一市,水文地质情况复杂,是我国洪涝灾害多发地区之一。管内津浦、京九、浙赣、皖赣、沪宁、沪杭及鹰厦外福等铁路干线,共有大小桥梁3000多座,这些桥梁在不同时期按不同的标准修建,其抗洪能力各不相同,有相当部分存在水害隐患,因此,全面开展桥梁水文检定工作显得极为迫切。由于长期以来桥梁水文计算工作主 Shanghai Railway Bureau is located in one of the four provinces and one city in eastern China, with complicated hydrogeological conditions. It is one of the flood prone areas in our country. There are more than 3,000 bridges of various sizes in Jinzhu, Jinjiu, Zhe-Gan, Wan-Gan, Shanghai-Nanjing, Shanghai-Hangzhou and Yingzhou-Fuzhou Expressways. These bridges are built according to different standards at different times and have different flood abilities , There is a considerable part of water hazards exist, therefore, the full implementation of the bridge hydrological certification work is extremely urgent. Due to a long history of bridge hydrology calculation master