| 索桁式玻璃幕墙风荷载时程模拟及风振响应 |
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| 引用本文： | 王莺歌,李正农.索桁式玻璃幕墙风荷载时程模拟及风振响应[J].昆明理工大学学报(理工版),2011,36(2):26-31,37. |
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| 作者姓名： | 王莺歌 李正农 |
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| 作者单位： | 1. 广东嘉应学院,土木工程系,广东梅州,514015
2. 湖南大学土木工程学院,湖南长沙,410082 |
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| 基金项目： | 国家自然科学基金，"十一·五"国家科技支撑计划项目，梅州市自然科学基金项目 |
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| 摘 要： | 在利用时域分析法研究索桁式玻璃幕墙在脉动风荷载作用下的响应情况时,需要得到其表面脉动风压时程数据.以随高度变化的风速谱（Sim iu谱）为基础,通过自回归线性滤波法,模拟出空间多结点相关脉动风压时程随机序列;由模拟结果计算出的功率谱与目标功率谱吻合良好.将所得时程数据加载在索桁式玻璃幕墙的有限元模型上进行瞬态计算,对位移结果做统计分析,获得适用于结构设计使用的风振系数.
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| 关 键 词： | 索桁式玻璃幕墙 风压时程序列 自回归法 风压功率谱 风振系数 |
Fluctuating Wind's Simulation and Wind-Induced Response Analysis of Cable Truss Supporting Glass Curtain |
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| WANG Ying-ge,LI Zheng-nong.Fluctuating Wind's Simulation and Wind-Induced Response Analysis of Cable Truss Supporting Glass Curtain[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2011,36(2):26-31,37. |
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| Authors: | WANG Ying-ge LI Zheng-nong |
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| Affiliation: | 1.Department of Civil Engineering,Jiaying University,Meizhou,Guangdong 514015 China;2.Department of Civil Engineering,Hunan University,Changsha 410082,China) |
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| Abstract: | The data of surface fluctuating wind pressure time interval is necessary in researching cable truss supporting glass curtain wall＇s response to fluctuating wind load.Based on wind velocity spectrum（the Simiu spectrum） changed with height,the random sequence of relevant spatial multi-nodes＇ fluctuating wind pressure time interval is simulated by Autoregression method of linear filtering.The calculated power spectrum according to simulation tallies fit well with the target one.Through adding the calculated data of time interval to the finite element model of the cable truss supporting glass curtain wall to compute the transient state,and analyzing the displacement result,the wind vibration coefficient is finally obtained. |
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| Keywords: | cable truss supporting glass curtain wind pressure time series Autoregression method wind pressure power spectrum wind vibration coefficient |
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