基于多目标的杭州之江新城骨干河道交汇处岸线优化方案  

A Multi-objective Optimization Plan for the Shoreline at the Intersection of the Main Rivers in Hangzhou Zhijiang New City

作　　者：张连刚 李若华 谢宇 ZHANG Lian-gang;LI Ruo-hua;XIE Yu(Zhejiang Qingyuan Engineering Technology Co.,Ltd.,Hangzhou 310012,China;Zhejiang Tongji Vocational College of Science and Technology,Hangzhou 311231,China)

机构地区：[1]浙江清源工程技术有限公司,浙江杭州310012 [2]浙江同济科技职业学院,浙江杭州311231

出　　处：《水电能源科学》2023年第11期31-34,共4页Water Resources and Power

摘　　要：为降低桥墩群对杭州之江新城骨干河道团结浦、三号浦交汇处的水流影响,构建了平原河网平面二维数学模型,研究了3个岸线优化方案对交汇处流态和雍水的改善效果,并综合阻水比、征地面积、水域面积及桥墩安全等多目标进行比较分析。结果表明,拓宽一侧河道以免桥墩位于主河槽或改道避开桥墩,均可有效降低桥墩雍水影响,3个优化方案对雍水高度的改善效果相当;方案2、3会影响桥墩安全,水域面积相对较小且征地面积大,方案1对桥墩安全影响较小,工程实施相对容易,综合优势较高,推荐方案1为最优方案。In order to reduce the impact of bridge pier groups on the water flow at the intersection of the main rivers of Hangzhou Zhijiang New City,three shoreline optimization schemes were studied to improve the flow pattern based on a two-dimensional mathematical model.The optimal remediation plan was recommended based on multiple objectives such as water resistance ratio,land area,water area,bridge pier safety,and so on.The results show that the widening one side of the river channel to prevent bridge piers from being located in the main channel or changing the route to avoid bridge piers can effectively reduce the impact of bridge piers on the water level.The three optimization schemes have the same improvement effect on the backwater of the bridge piers.Scheme 2 and scheme 3 will affect the safety of bridge piers,with relatively small water area and large land acquisition area.Scheme 1 has little impact on the safety of bridge piers and is relatively easy to implement.Scheme 1 has high comprehensive advantages,and is recommended as the optimal option.

关 键 词：河道交汇 桥墩 流态 雍水 防洪排涝 平原河网 

分 类 号：TV85[水利工程—水利水电工程]