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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第13卷    第1期    总第70期    2016年1月

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文章编号:1672-7029(2016)01-0111-06
中小流域桥梁设计与检定流量计算方法研究
李整,陈代海,陈淮

(郑州大学土木工程学院,河南郑州 450001)

摘 要: 以水文资料普遍缺乏的中小流域桥梁流量计算为研究对象,提出一种基于流量影响线的中小流域桥梁设计与检定流量计算方法:对比分析瞬时单位线基本原理和应力影响线加载理论,提炼两者共性,基于瞬时单位线法和影响线加载原理,提出流量影响线模型;制定涨退水历时的确定方法,模型峰值利用历史洪水资料标定确定;将设计或检定频率雨量系列在已标定模型上加载,确定设计流量或检定流量,对新建桥梁进行水文设计,对既有桥梁进行抗洪能力检定。研究结果表明:基于流量影响线的中小流域桥梁设计与检定流量计算方法需要参数少,计算过程便于掌握,结果可靠,可以作为资料缺乏的中小流域流量计算时的重要参考。

 

关键字: 桥梁;流量影响线;设计流量;检定流量;中小流域

Research on design flow and check flow calculationmethod for bridges in small and medium watersheds
LI Zheng, CHEN Daihai, CHEN Huai

School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China

Abstract:Take flow calculation of bridges in small and medium watersheds that is lacking of hydrological data as research object, a kind of flow calculation method involving design and the check based on flow influence line is presented: combined with basic principle of instantaneous unit hydrograph and stress influence line loading, calculation model is put forward; calculation idea of rising time and retreating time are made, and peak value of the model is calibrated by historical flood; design or check peak flow is calculated by loading design or check rainfall series on the calibrated model; hydrologic design of new bridges and checking flood-resistant ability of existing bridges can be done. The results show that flow calculation of small and medium bridges based on flow influence line method, requires less parameters, is convenient in practical application, and is reliable in calculation accuracy. So it can be used as an important reference for flow calculation in small and medium watersheds that is lacking of hydrological data.

 

Key words: bridges; flow influence line; design flow; check flow; small and medium watersheds

ISSN 1672-7029
CN 43-1423/U

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