西南交通大学学报 2005, 40(5) 580-584 DOI:     ISSN: 0258-2724 CN: 51-1277/U

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本文关键词相关文章
重庆万豪国际会展大厦
风洞试验
风压分布
气动弹性模型试验
风致响应
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郑史雄
薛尚铃
PubMed
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重庆万豪国际会展大厦风效应试验研究

郑史雄;薛尚铃

西南交通大学土木工程学院,四川成都610031;中冶赛迪工程技术有限公司建工分院,重庆400013

摘要

重庆万豪国际会展大厦是高度达303 m的超高层钢结构,其基阶频率仅0. 123 4 Hz,为了准确确定风荷 载及其风致响应,对其进行了风致安全性及舒适性评估.采用风洞模型试验方法,对场地大气边界层进行了模 拟;通过测压模型风洞试验测量风压系数的分布,并计算静风荷载;用气动弹性模型测量风致响应,包括大厦顶 部的位移响应、加速度响应和角速度响应,并计算动风荷载.此外,还讨论了周边环境建筑对其风效应的影响.研 究表明,周边建筑环境对大厦的静力和动力风荷载均有较大影响,在设计风速范围内不会产生驰振现象,其顶部 加速度和角速度均小于限值,舒适性满足规范要求.

关键词 重庆万豪国际会展大厦   风洞试验   风压分布   气动弹性模型试验   风致响应   

ExperimentalResearch ofW ind-Induced Responses of ChongqingM arriott InternationalConference Center Building

ZHENG Shi-xiong;XUE Shang-ling

School of Civil Eng., Southwest Jiaotong University, Chengdu 610031, China;Institute of Constructional Engineering, CisdiEng. Co., Ltd., Chongqing 400013, China

Abstract:

To obtain thewind load andwind-induced responses of theChongqingMarriott International Conference Center Building, a tall steel structure building with a height of 303 m and the first frequency of0. 123 4 Hz, to evaluate its living comfortableness and safety, a wind-tunnelmodel test was carried outto simulate naturalwind in the turbulentboundary layeron the site of the building. The distribution ofwind pressure on every surface of the buildingwasmeasured by a staticmode,l and the static wind load was calculated. The wind-induced responses, including displacemen,t acceleration and angular velocity responses, were measured by an aeroelastic mode,l and the dynamic wind load was gained. The effects of its surrounding buildings and structureswere discussed. The result shows that the surrounding buildings have great effects on the wind load, no galloping will occur for the design velocity, the acceleration and angular velocity of the building top are smaller than their allowances and the living comfortability of the buildingmeets the related national code.

Keywords: wind-tunnel test   distribution ofwind pressure   aeroelasticmodel test   wind-induced response    Chongqing Marriott International Conference Center Building  
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