城市曲面应急防洪屏结构优化研究  

Structure Optimization of Curved Urban Emergency Flood⁃control Barriers

作　　者：王小东[1] 徐进超[2] 赵君[2] 顾芳芳 WANG Xiaodong;XU Jinchao;ZHAO Jun;GU Fangfang(Nanjing Hydraulic Research Institute,Nanjing 210029,China;Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]南京信息工程大学,江苏南京210044

出　　处：《防灾减灾工程学报》2024年第4期809-812,825,共5页Journal of Disaster Prevention and Mitigation Engineering

基　　金：江苏省水利科技项目(2020022,2021024);水利部重大科技项目(SKS-2022014);江苏省科技计划项目(BZ2023021)资助。

摘　　要：研发新型防洪抢险装备,对于防御城市洪涝灾害,保障城市生命线安全具有重要的意义。采用数值仿真模拟的方法,分析了城市曲面应急防洪屏(以下简称“防洪屏”)曲面拱度对结构受力特性的影响,进一步对防洪屏的结构体型进行了优化研究。结果表明:在同一挡水工况下,随着曲面拱度的增大,防洪屏在同一挡水条件下,所承受的应力逐渐减小,变形明显改善;根据计算结果提出了优化方案,优化的新体型防洪屏在水深小于0.8 m,流速小于1.0 m/s挡水工况下,结构最大应力小于材料特性指标安全极限阈值,满足挡水安全稳定要求,可以作为定型装备推广应用。研究成果为城市曲面应急防洪屏的优化设计提供了重要参考依据。The development of innovative flood-retaining equipment is crucial for defending against ur-ban flood disasters and ensuring the safety of urban lifelines.Using numerical simulation methods,this study investigates the impact of the curvature of curved urban emergency flood-control barriers on their structural stress characteristics and further optimizes the barrier structure.The results indicate that under the same water-blocking conditions,as the curvature of the barriers increases,the stress they endure gradually decreases,and their deformation significantly improves.Building on these find-ings,an optimization scheme was proposed.The proposed optimized scheme met operational condi-tions under water depths less than 0.8 m and flow velocities less than 1.0 m/s.Under these condi-tions,the structural stress remained below the yield stress of the materials,meeting the requirements for safe and stable water-blocking.These findings provide a valuable reference for the optimized de-sign of curved urban emergency flood-control barriers.

关 键 词：城市曲面应急防洪屏 有限元分析 受力特性 结构优化 

分 类 号：TV122[水利工程—水文学及水资源]