弯道河流中桥墩上游水位最大壅高计算  

Calculation of Maximum Backwater Level at Upstream of Bridge Pier in Curved River

作　　者：汪海伦 姜锋 路明[1,2] 黄靖轩 WANG Hai-lun;JIANG Feng;LU Ming;HUANG Jing-xuan(School of Water Conservancy and Hydroelectric Power,Hebei University of Engineering,Handan 056001,China;Hebei Key Laboratory of Intelligent Water Conservancy,Handan 056001,China;Hebei Branch of China South-to-North Water Diversion Middle Route Corporation Limited,Shijiazhuang 050035,China)

机构地区：[1]河北工程大学水利水电学院,河北邯郸056001 [2]河北省智慧水利重点实验室,河北邯郸056001 [3]中国南水北调集团中线有限公司河北分公司,河北石家庄050035

出　　处：《水电能源科学》2022年第8期143-147,共5页Water Resources and Power

基　　金：河北省自然科学基金项目(E2019402102)。

摘　　要：采用模型试验与数值模拟相结合的方法研究了弯道河流中桥梁布设对上游水位壅高的影响,确定弯道水流中桥墩上游水位变化由两部分组成,即桥墩导致河道过流能力降低,壅高了上游水位;受桥墩绕流阻力作用,弯道水流上游横向水位超高减小,促使水面线重新分布。进而在传统经验公式的基础上,基于物理试验、数值模拟结果和水力学理论,建立了弯道水流条件下桥墩上游最大水位壅高修正算法。结果对弯道河流涉河桥梁工程规划、设计、建设具有一定的指导价值。By combining physical model test with numerical simulation,this paper analyzed the impact of bridge layout on upstream water level rise in curved river.The change of upstream water level of bridge pier in bend flow is composed of two parts:One is that the bridge pier reduces the flow capacity of river channel and raises the upstream water level;The other is that under the action of the flow resistance around the pier,the transversal backwater in the upstream of the bend flow decreases,which promotes the redistribution of the water surface curve.Based on the traditional empirical formula,physical test,numerical simulation results and hydraulic theory were used to establish the correction algorithm of the maximum backwater level in the upstream of the pier.The results have certain guiding value for the planning,design and construction of bridges wading through in curved river.

关 键 词：弯道水流 桥墩 壅水高度 模型试验 数值模拟 

分 类 号：U443.22[建筑科学—桥梁与隧道工程] TV87[交通运输工程—道路与铁道工程]