| 摘要: |
| 国内关于高分子材质城市内涝应急防御装备的研究较为少见。本文采用水槽试验与流固耦合数值仿真相结合的方法,对城市应急防洪屏(以下简称“防洪屏”)的结构受力特性进行了研究。结果表明,数值仿真模拟与试验结果吻合较好。随着水深和流速的增大,防洪屏的应力和变形逐渐增大,最大应力位于防洪屏的踵部,最大变形位于挡水面顶部两侧。防洪屏的结构受力系数随着来流弗劳德数的增大快速衰减,当弗劳德数大于约0.15后,结构受力系数趋于定值。研究成果为防洪屏的进一步优化设计提供了重要参考依据。 |
| 关键词: 城市应急防洪屏 水槽试验 流固耦合 结构受力特性 |
| DOI： |
| 分类号:TV 122 |
| 基金项目: |
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| Study on Force Characteristics of Urban Flood Control Barrier Based on Fluid-solid Coupling Ananysis |
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WANG Xiaodong1, XU Jinchao2, DONG Jia1
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1.Nanjing Hydraulic Research Institute;2.Nanjing University of Information Science Technology
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| Abstract: |
| The research about polymer materials is rare. The structural stress characteristics of Urban flood control barriers were studied by flume tests and fluid-solid coupling numerical simulation model. The results show that the numerical simulation model was agreed well with the experimental results. With the increase of water depth and flow velocity, the stress and deformation of the flood control barrier increased gradually. The maximum stress was located at the heel of the flood control barrier, and the maximum deformation was located on the two sides of the top of the water retaining surface. The structural stress coefficient decreased rapidly with the increase of Froude number. When Froude number is greater than 0.15, the structural stress coefficient tends to a certain value. The research results provide a reference for the design or further optimization of flood control barrier. |
| Key words: urban flood control barrier flume experiment fluid-solid coupling structural stress characteristics。 |
