高层建筑屋顶广告牌风致响应分析

发布时间：2018-03-13 04:01

本文选题：高层建筑屋顶广告牌　切入点：风洞试验　出处：《振动与冲击》2017年03期 　论文类型：期刊论文

【摘要】：基于刚性模型测压风洞试验数据,采用时程分析法对高层建筑屋顶广告牌的风致响应进行了研究,并分析了单边布置、邻边布置、三边布置及四边布置广告牌对风致响应的影响。结果显示,高层屋顶广告牌单边布置时面板受力最大,而三边布置广告牌时面板受力最小;面板中间位置的斜撑单元对风荷载最为敏感,靠近面板迎风侧的立柱单元内力响应相对较大,面板中心位置的横向单元内力响应最大;不同的广告牌布置方式下,各类单元的阵风响应因子差别都不超过0.1。而同一种广告牌布置方式下各类单元之间的阵风响应因子差别最大为0.3;建议计算高层屋顶广告牌等效静力风荷载时,可偏保守地将阵风响应因子统一取为1.6。
[Abstract]:Based on the wind tunnel test data of rigid model, the wind-induced response of roof billboards of high-rise buildings is studied by time-history analysis, and the one-sided arrangement and adjacent side arrangement are analyzed. The effect of three sides and four sides on the wind-induced response. The results show that the panel has the greatest force when the billboard is arranged unilaterally, and the panel has the least force when the billboard is arranged on the three sides. The inclined bracing element in the middle position of the panel is the most sensitive to wind load. The inner force response of the column element near the windward side of the panel is relatively large, and the lateral force response of the lateral element in the central position of the panel is the largest. The difference of gust response factor of each unit is not more than 0.1. The maximum difference of gust response factor between each unit is 0.3 under the same billboard arrangement. It is suggested that when calculating the equivalent static wind load of high-rise roof billboard, The gust response factor can be taken as 1.6.
【作者单位】：上海市气象科学研究所;同济大学土木工程防灾国家重点实验室;华南理工大学亚热带建筑科学国家重点实验室;
【基金】：华南理工大学风工程广东省普通高校重点实验室开放研究基金(1302)
【分类号】：TU973.213

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