弯曲分汊河段桥区通航水流条件及通航孔调整净宽分析  

Analysis of navigation flow conditions around bridge and clear width of navigable openings adjustment in curved branching river reach

作　　者：胡宝瑶 江涛[2] 邓涯 马爱兴[3,4] 胡颖[3,4] HU Bao-yao;JIANG Tao;DENG Ya;MA Ai-xing;HU Ying(Jiangxi Port Group Co.,Ltd.,Nanchang 330008,China;CCCC Water Transportation Consultants Co.,Ltd.,Beijing 100007,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Key Laboratory of Port,Waterway&Sedimentation Engineering Ministry of Communications,PRC,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]江西省港口集团有限公司,江西南昌330008 [2]中交水运规划设计院有限公司,北京100007 [3]南京水利科学研究院,水文水资源与水利工程科学国家重点实验室,江苏南京210029 [4]南京水利科学研究院,港口航道泥沙工程交通行业重点实验室,江苏南京210029

出　　处：《水运工程》2022年第7期192-198,共7页Port & Waterway Engineering

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(Y220010、Y220011、Y221012、Y221013);江西省交通运输厅科技项目(2018Z0003)。

摘　　要：建设于弯道、分汊的通航环境复杂河段的老旧桥梁在部分水情下海事安全风险较高。为研究调整通航孔对提高此类老旧桥梁通航安全性的作用,以赣江丰城公路大桥为例,建立全长14.7 km的二维水流数学模型,对下游龙头山航电枢纽运行前后洪、中、枯各级流量下河道水流特性、桥孔内和桥区通航水流条件进行计算与分析,并按照规范方法论证桥梁净宽尺度及其调整的可行性。研究成果可为类似弯曲分汊河段老旧桥梁通航环境改善提供借鉴。The old bridges constructed in the curved branching reach under complicated navigation environment face great risks under some water conditions.To study the effect of navigable opening adjustment on the improvement of safe navigation,we take Fengcheng Highway Bridge in Ganjiang River as an example and establish a 2D hydrodynamic numerical model of 14.7 km long to calculate and analyze the river flow characteristics and navigation flow conditions in the openings and around the bridge under several scenarios from the drought season to the flood season before and after the operation of the downstream Longtoushan Navigation-power Junction.Based on the calculated results,we demonstrate the bridge clear width scale and the feasibility of its adjustment in accordance with the code.The research results may serve as a reference for the improvement of the navigation condition of other old bridges in the curved branching river.

关 键 词：赣江 S形弯道 分汊河段 通航孔 调整 通航水流条件 

分 类 号：U617.4[交通运输工程—船舶及航道工程]