新建高速铁路涉水桥梁对湖泊水文要素的影响分析  

The influence of the new high-speed rail lake-crossing bridges to the lake hydrological elements

作　　者：黄欣 HUANG Xin(Shanghai Branch of Jiangsu Taihu Water Conservancy Planning and Design Institute Co.Ltd,Shanghai 200434,China)

机构地区：[1]江苏省太湖水利规划设计研究院有限公司上海分公司,上海200434

出　　处：《水科学与工程技术》2025年第1期1-5,共5页Water Sciences and Engineering Technology

摘　　要：湖泊由于其环境相对封闭、水流流速相对缓慢等原因,更容易受到外部因素的影响,加之湖泊中分布的桥墩数量一般相对较多,对水流流态的干扰则更为显著。以通苏嘉甬铁路吴江段涉及的黄泥兜和元鹤荡2个湖泊为例,通过建立二维水动力数学模型,模拟分析涉水桥墩建设对湖泊流态的影响。研究结果表明,铁路涉水桥墩的建设对整个湖区的流场分布、流速变化及流向特征基本没有影响,对桥墩周边局部区域的湖水流向、流速有一定程度的影响,但是影响幅度和影响范围均较小。Lakes are more susceptible to external influences due to their relatively closed environment and slow flow velocity.In addition,there are more piers in the lakes than others,and the disturbance to the flow pattern is more intense.Taking Huangnidou Lake and Yuanhedang Lake which are crossed by Tongsujiayong railway in Wujiang Section as an example in this paper,through building up the two-dimensional hydrodynamic mathematical model,the effect on the lake flow patterns under high-speed rail bridges construction is analyzed.The results show that:the construction of high-speed rail lake-crossing bridges has no effect on the flow field,flow velocity and flow direction of the whole lake,and has some effect on the flow direction and flow velocity of the local area around the piers.The influence amplitude and range are small.

关 键 词：二维水动力模型 跨湖桥梁 水文要素 

分 类 号：U448.13[建筑科学—桥梁与隧道工程]