摘要
泸州河东长江大桥采用钻石形串排矩形柱型主塔,为了研究其主塔桥墩对该桥区河段各通航水流特性的影响,采用平面二维水流数学模型,模拟该河段方案实施前后的桥区河段流场,分析串列矩形柱桥墩对水流条件的影响。针对数模结果,从工程应用角度的分析表明在各级流量下工程实施前后桥区河段水位、流速变化较小,紊流宽度对通航条件影响较小,不会对桥区通航产生显著影响。
East Yangtze River Bridge of Luzhou takes the diamond-shaped rectangular column piers in tandem arrangement as its main tower. In order to study the influence of the main pylon pier on the flow characteristics of navigable river, it builds the 2D mathematical model of flow to simulate the flow field of the bridge area before and after the implementation of the plan, and analyzes the influence of the bridge pier on the flow condition. According to the results of the digifax, it finds that the water level and velocity change of the front and rear bridge are small at all levels of flow from the perspective of engineering application, and the width of turbulent flow has little influence on navigation conditions, and have no impact on navigation in bridge area.
作者
池丽敏
魏月梅
冯佳佳
周强
CHI Limin WEI Yuemei FENG Jiajia ZHOU Qiang(Nanjing Water Planning and Designing Institute CO. Ltd, Nanjing 210022, China Jiangsu Susheng Engineering Cost Consulting Co. Ltd, Nanjing 210029, China Soil and Water Conservation Ecological Environment Monitoring Station of Jiangsu Province, Nanjing 210008, China)
出处
《水利信息化》
2017年第3期41-45,共5页
Water Resources Informatization
关键词
矩形柱
数值模拟
水流条件
通航
rectangular column piers
numerical simulation
flow situation
navigation
