洪水作用下地铁防洪挡板应力变形特征CFD分析  

ANALYSIS OF STRESS AND DEFORMATION CDF CHARACTERISTICS OF SUBWAY FLOOD CONTROL BAFFLE IN FLOOD

作　　者：周天忠 钟有信 汤艺 胡盛斌 林静 宋茂 ZHOU Tian-zhong;ZHONG You-xin;TANG Yi;HU Sheng-bin;LIN Jing;SONG Mao(Nanning Rail Transit Group Co.,Ltd.,530029,Nanning,China;School of Resources and Safety Engineering,Central South University,410083,Changsha,China)

机构地区：[1]南宁轨道交通集团有限责任公司,南宁530029 [2]中南大学资源与安全工程学院,长沙410083

出　　处：《建筑技术》2023年第13期1643-1646,共4页Architecture Technology

摘　　要：防洪挡板是地铁车站出入口的重要防汛设备,其在受到洪水作用时会发生相应的形变,当形变范围超过一定阈值时,防洪挡板的防汛功能将大幅降低。为研究洪水的动水压力对防洪挡板的变形影响,本工程基于计算流体动力学(CFD),以防洪挡板的总长度、水流速度、涨水高度3个指标作为变量,模拟不同工况下防洪挡板变形情况。研究结果表明,防洪挡板的最大变形区域处于立柱两侧挡板顶部的中心位置,且在影响挡板形变的方面,防洪挡板的总长度>水流速度>涨水高度。Flood control baffles are important flood control equipment at the entrance and exit of subway stations,subject to deformation in floods.When the deformation of a flood control baffle exceeds the threshold,its flood control function will greatly decline.In order to study the impact of dynamic water pressure of floods on deformation of flood control baffles,the project simulates deformation of flood control baffles under different conditions based on CFD(computational fluid dynamics),with the total length of flood control baffles,water flow velocity,and water rise height as three indicators.Research results show that the maximum deformation of flood control baffles occurs at the top centers of baffles on two sides of columns.The total length of flood control baffles has the greatest impact on the deformation of flood control baffles,followed by the water flow velocity and water rise height in turn.

关 键 词：防洪挡板 CFD 应力变形区域 

分 类 号：TU74[建筑科学—建筑技术科学]