(1 深圳市建筑设计研究总院有限公司，深圳518031；2教育部建筑安全与节能重点实验室, 湖南大学土木工程学院，长沙 410082；3 香港城市大学土木及建筑工程系，香港)

[摘要] 根据风洞试验的结果，确定了高层建筑结构的风荷载时程，对结构进行分析得到了结构在风荷载作用下的响应时程。假定结构物理参数未知情况下建立了反问题模型，根据时程分析结果，运用荷载归一化统计平均方法识别出结构的物理参数并反演出结构的风荷载。在计算过程中假定结构相邻层的风荷载是完全相关的，利用这一假定不断对风荷载反演结果进行修正，并在迭代过程中引入最小二乘迭代格式来估计结构的物理参数，反演出的结构风荷载与实际值吻合很好。

[关键词] 高层建筑;风洞试验;时程分析;参数识别;反演

中图分类号： TU312       文献标识码：A      文章编号：1002-848X(2013)S1-0954-06

Inverse analysis of wind loads on tall-buildings

Yang Wanghua^1,2, Li Qiusheng^2,3, Wang Qiwen¹, Zhou bin¹

（1Shenzhen General Institute of Architectuctural Design and Research Co. , Ltd, Shenzhen 518031, China; 2 Key Laboratory of Building Safety and Energy Efficiency of Hunan University, Changsha 410082, China; 3 City University of Hong Kong, Hong Kong, China)

Abstract: The results of wind tunnel test are used to determine the time-history of the wind loads on a tall building. Then, on the basis of structural dynamics equation, the time domain analysis of the structure under the wind loading action is carried out and the time-history of the structural responses are calculated. Using the structural responses, the normalized statistical average algorithm is adopted to inversely determine the wind loads on the structure with unknown physical parameters. The wind loads on adjacent floors are assumed to be completely correlated. This assumption is utilized to modify the inversely determined results in iterative process, and the least square method is used to identify the parameters of the structure and the wind loads. The applicability of the proposed method for dealing with noise involved in the response data is assessed.

Keywords: tall building; wind tunnel test; time-history analysis; parametric identification; inverse problem