312国道改扩建工程公路桥防洪评价
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摘要
介绍了312国道改扩建工程公路桥项目的基本情况。对流域暴雨洪水特性、河流演变趋势进行了分析。通过现场查勘,结合《商洛地区实用水文手册》,以丹凤水文站为参证站,采用汇水面积相关法、综合参数法、水文比拟法和推理公式法对公路桥10年一遇、100年一遇的洪峰进行了计算探讨,经综合比对,提出采用推理公式法的计算值,和公路桥设计值相比,其100年一遇的建设设计值基本满足工程建设要求。
An introduction was made on the general information of highway bridge works of No.312 national highway reconstruction and expansion project. Analysis was made on the river basin rainstorm flood characteristics and river evolution trend. Based on site investigation, combined with the Practical Hydrological Manual of Shangluo Area, taking the Danfeng Hydrological Station as reference station, the peak flood of once per 10 years and once per 100 years were calculated by catchment area relative method, comprehensive parameter method, hydrological analogy method and inference formula method. The calculation results were compared, based on which it is put forward to adopt the results out of inference formula method for the highway bridge works and the design flood of once per 100 years is able to meet the construction requirements of the project.
An introduction was made on the general information of highway bridge works of No.312 national highway reconstruction and expansion project. Analysis was made on the river basin rainstorm flood characteristics and river evolution trend. Based on site investigation, combined with the Practical Hydrological Manual of Shangluo Area, taking the Danfeng Hydrological Station as reference station, the peak flood of once per 10 years and once per 100 years were calculated by catchment area relative method, comprehensive parameter method, hydrological analogy method and inference formula method. The calculation results were compared, based on which it is put forward to adopt the results out of inference formula method for the highway bridge works and the design flood of once per 100 years is able to meet the construction requirements of the project.
引文