小桥涵抗水灾综合评价指标

为了评价和预测小桥涵的整体抗水灾能力，在理论分析、室内模型试验和野外调查的基础上，分析了小桥涵水毁机理。根据小桥涵的主要致灾因子，运用因素分析法，提出小桥涵抗水灾能力的评价指标和相应的评价标准。研究结果表明，小桥涵位置、孔径、进出口形式以及加固与消能措施是决定小桥涵抗水灾能力的关键因素。评价指标和标准可为山区公路的设计、施工与养护工作提供抗水灾的决策依据。

Anti-disaster comprehensive evaluation index of bridge and culvert

In order to evaluae and forecast the antl-flood disaster of bridge and culvert, on the base of theory analysis, model test and field investigation, this paper studied washout of bridge and culvert by flood mechanism. According to the main disaster index, factor analysis is adopted to bring forward the anti-flood disaster comprehensive evaluation index and evaluation standard of bridge and culvert. The results indicate that the site of bridge and culvert, aperture, different forms of inlet and outlet, reinforcement and dissipation energy measures are the key factors to slove problems in the anti-flood disaster of bridge and culvert. This work can provide an exact decision-making to design, construct and cure for mountain road. 1 tab, 8 refs.