柔性摩天轮结构抗风性能研究  

Research on Wind Resistance Performance of a Flexible Ferris Wheel

作　　者：何基业 骆艳丽 韦茂志 赵友 耿雪霄 HE Jiye;LUO Yanli;WEI Maozhi;ZHAO You;GENG Xuexiao(School of Automotive Engineering,Liuzhou Vocational and Technical College,Liuzhou 545006,Guangxi China;School of Automotive Technology,Liuzhou Railway Vocational Technical College,Liuzhou 545616,Guangxi China)

机构地区：[1]柳州职业技术学院汽车工程学院,广西柳州545006 [2]柳州铁道职业技术学院汽车技术学院,广西柳州545616

出　　处：《噪声与振动控制》2023年第4期61-67,共7页Noise and Vibration Control

基　　金：广西中青年科研基础能力提升资助项目(2022KY1409)。

摘　　要：以福建某摩天轮结构为研究对象,使用ANSYS对其进行抗风性能研究。首先,采用线性滤波法数值模拟脉动风速时程;然后,考虑在节点挡风面积的影响下,进行时域内风荷载的模拟;最后,分别在顺向风和横向风2种荷载工况下进行摩天轮结构的风振响应时程分析。研究结果表明:摩天轮结构的中上部对风较敏感;横向风对结构的影响均符合规范要求,且最大加速度为160 mm/s2,顺向风的加速度值波动较大,在个别时刻超过200 mm/s2,超出乘坐舒适度的要求,可考虑在轿厢连接处安装阻尼器来减少振动,也可考虑实施振动控制;在顺向风的影响下,加速度值在摩天轮结构5.3 m处到38.4 m增加较快,从38.4 m处到85.4 m增加比较缓慢,这也表现出柔性结构的特点。The structure of a Ferris wheel in Fujian province is taken as the research object,its wind resistance performance is studied by ANSYS.Firstly,the time-history of fluctuating wind speed is numerically simulated by the autoregressive method.Then,the simulation of wind load in the time domain is carried out considering the influence of the windshield area of the node.Finally,under the two load conditions,the time-history analysis of the wind vibration response of the Ferris wheel structure is carried out respectively.The results show that the middle and upper parts of the Ferris wheel structure are more sensitive to the wind.The effects of transverse wind on the structure are all in line with the specification requirements,and the maximum acceleration is 160 mm/s2.The acceleration value of the downstream wind fluctuates greatly,exceeding 200 mm/s2 at some moments,which cannot satisfy the requirements of ride comfort.Installing dampers at the car connections or applying some other vibration control measures can reduce the wind-induced vibration.Under the influence of the downwind,the acceleration value increases rapidly in the range from 5.3 m to 38.4 m high of the Ferris wheel structure,and increases slowly in the range from 38.4 m to 85.4 m,which also demonstrates the characteristics of flexible structures.

关 键 词：振动与波 摩天轮结构 线性滤波法 风荷载 时程分析 

分 类 号：TU3[建筑科学—结构工程]