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为了预测小桥涵的整体抗水灾能力,对小桥涵进行了水毁机理分析,结合小桥涵水毁灾害的野外现场调查资料和室内试验资料,运用因素分析法,提出影响小桥涵易损性的主要评价指标及其评定标准。研究结果表明,小桥涵位置、进出口形式、过流能力、水力特性、水位特征、流速特征是决定小桥涵易损性的关键因素,其评价指标及标准为小桥涵的设计、施工与养护提供抗水灾的决策依据。
In order to predict the overall capacity of resisting flood damage of small bridges and culverts, the paper analyzes the mechanism of water damage in small bridges and culverts. Combining the field survey data and laboratory test data of small bridges and culverts in the destruction of disasters and disasters, Evaluation index and its evaluation criteria. The results show that the location of small bridges and culverts, the form of import and export, overcurrent capacity, hydraulic characteristics, water level characteristics and flow rate characteristics are the key factors that determine the vulnerability of small bridges and culverts. The evaluation indexes and standards provide the design, construction and maintenance of small bridges and culverts Flood prevention decision-making basis.