关河桥洪水计算

摘要

This paper describes the gene ral situation of the State Road 209 line Baoziwan-Sancha highway reconstruction project, analyzes the necessity of the project. The flood calculation of the Guanhe bridge with the highway crossing is need ac-cording to the requirements of flood impact assessment, base on the comparative analysis of the results of Pianguan station de-sign flood calculated by different units, ultimately, this paper determine the use of the calculation results of Shanxi province hydrology manual, then calculatie the design flood of the river section of Guanhe bridge site using the area ratio index method.%介绍了国道209线堡子湾—三岔公路改建工程概况，分析了工程建设的必要性。根据防洪影响评价的要求需对公路跨越的关河桥进行洪水计算，通过对不同编制单位偏关站设计洪水计算结果进行比较分析后，最终确定采用山西省水文手册的计算结果，然后采用面积比指数法对关河桥桥址断面处设计洪水进行计算。