综合杆顺向风振响应及风振系数取值研究  

Research on the Wind-induced Vibration Response and Wind-induced Coefficient of Integrated Lighting Poles

作　　者：刘佳 胡雅琪 胡伟红 夏海 Liu Jia;Hu Yaqi;Hu Weihong;Xia Hai(Beijing General Municipal Engineering Design Research Institute Co.,Ltd.,100082,China)

机构地区：[1]北京市市政工程设计研究总院有限公司,100082

出　　处：《特种结构》2024年第5期17-21,共5页Special Structures

摘　　要：综合杆结构一般由风荷载起控制作用,其挂载设备较多且通常设置大悬臂,结构外形及质量沿高度分布不均匀,各规范中风振系数的计算假定不再适用于此类结构。本文基于随机振动理论,采用Davenport风谱并考虑脉动风空间相干性,通过线性滤波器法对脉动风进行模拟。采用时域分析法对三类典型综合杆进行脉动风振响应分析,通过惯性力法获得结构各部位的风振系数,并与各规范法计算结果进行对比分析,以供设计参考。The Integrated Lighting Pole(ILP)structure is typically dominated by wind loads,characterized by a significant number of mounted equipment and typically featuring a large cantilever.Due to the uneven distribution of structural shape and mass along its height,the assumptions made in various standards for calculating wind vibration coefficients are no longer applicable to this type of structure.Based on the theory of random vibration,this research employed the Davenport wind spectrum and considered the spatial coherence of fluctuating wind.The fluctuating wind was simulated using the linear filter method.Furthermore,the time-domain analysis was conducted to investigate the wind-induced vibration response of three typical ILP.The wind vibration coefficients of various parts of the structure were obtained through the inertial force method and were subsequently compared with the results calculated using various standard methods,providing valuable references for future design practices.

关 键 词：综合杆 风荷载模拟 风振系数 

分 类 号：TU312.1[建筑科学—结构工程]