注水式城市应急防洪箱结构优化研究  

Structure Optimization of Urban Emergency Flood Control Box

作　　者：王小东[1] 徐进超[2] 赵君[2] 高英倩 WANG Xiao-dong;XU Jin-chao;ZHAO Jun;GAO Ying-qian(Nanjing Hydraulic Research Institute,Nanjing 210029,China;Nanjing University of Information Science&Technology,Nanjing 210044,China;Taizhou Xbarrier Technology Co.,Ltd.,Taizhou 225000,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 [3]泰州思百瑞水务有限公司,江苏泰州225000

出　　处：《水电能源科学》2023年第12期134-136,146,共4页Water Resources and Power

基　　金：江苏省水利科技项目(2021024,2020022);中国博士后科学基金资助项目(2020T130309,2019M651892)。

摘　　要：针对一种新型高分子材质的防汛应急抢险新装备——注水式城市应急防洪箱(以下简称“防洪箱”),采用有限元分析方法研究了不同材质防洪箱不同挡水高度下箱体的应力、应变和变形等特性。结果表明,箱体的应力集中区主要在迎水面和箱体两侧;随着迎水面挡水高度的增加,箱体内、外水位差的减小,箱体最大应力和最大变形逐渐减小。ABS、LLDPE、HDPE及PP四种材质中,ABS材质的防洪箱箱体在相同条件下的最大变形相对较小。在此基础上对防洪箱的结构进行了优化研究,优化方案下,箱体在同一工况下的应力、应变及变形均有较大的改善,其最大应力由原体型的16.09 MPa下降至优化体型的7.31 MPa,最大变形由0.78cm下降至0.13 cm,箱体结构受力特性有了明显的改善。A study was performed on the stress characteristics of the urban emergency flood-control box—a new equipment made of polymer material.The finite element analysis method was used to study the stress,strain and deformation characteristics of the flood control box under different water retaining heights.The results show that the stress concentration area of the box is mainly appeared at the water retaining surface and the two sides;With the increase of the water retaining height,the difference of water level between inside and outside of box as well as the maximum stress and the deformation are gradually smaller.Compared with the ABS,LLDPE,HDPE and PP materials,the deformation of the flood control box with ABS material is relatively smaller under the same conditions.An optimization study was carried out on the scheme of the flood-control box.And the stress,strain and deformation of the optimization scheme under the same conditions are greatly improved.The maximum stress decreases from 16.09 MPa in the original form to 7.31 MPa in the optimized form,and the maximum deformation decreases from 0.78 cm to 0.13 cm.The mechanical characteristics of the box structure are obviously improved.

关 键 词：城市应急防洪箱 有限元分析 受力特性 材料特性 结构优化 

分 类 号：TV87[水利工程—水利水电工程]