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Wind tunnel testing of wind pressures on a large gymnasium roof
  • ISSN号:1005-9784
  • 期刊名称:Journal of Central South University of Technology
  • 时间:0
  • 页码:521-529
  • 语言:英文
  • 分类:TU245.2[建筑科学—建筑设计及理论] V211.74[航空宇航科学与技术—航空宇航推进理论与工程;航空宇航科学技术]
  • 作者机构:[1]School of Civil Engineering, Harbin Institute of Technology, Harbin 150001, China, [2]School of Civil Engineering, Guangzhou University, Guangzhou 510006, China, [3]School of Civil and Building Engineering, Wuhan University, Wuhan 430072, China
  • 相关基金:Project(50978063) supported by the National Science Foundation of China; Project(NCET-09-0082) supported by the Program for New Century Excellent Talents in Chinese Universities; Project(121072) supported by the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China
  • 相关项目:强/台风场作用下大跨屋盖结构风致振动的原型实测及风洞试验研究
中文摘要:

风隧道测试为大钢体育馆结构被进行。同时的压力大小在一块模仿的郊外的边界层流动地里在它的全部椭圆体的房顶上被做。特殊注意在房顶上在不同地区对波动的风压力的特征被给予。一些选择结果被介绍:1 ) 在两个上的波动的风压力之间的关联给表面装上顶部, 2 ) 波动的协变性矩阵的特征值和特徵向量弯屈压力, 3 ) 波动的概率分布弯屈压力,并且 4 ) 山峰因素的统计特征。而且,伪稳定的途径的适用性详细被讨论。基于结果,用一条山峰因素途径,为估计最小的压力系数的一个实验公式被介绍。建议公式和那些决定的最小的压力系数的比较从风隧道测试获得了被做检验建议公式的适用性和精确性。

英文摘要:

A wind tunnel test was conducted for a large steel gymnasium structure. Simultaneous pressure measurements were made on its entire ellipsoidal roof in a simulated suburban boundary layer flow field. Special attention is paid to the charaeteristics of fluctuating wind pressures in different zones on the roof. Some selected results are presented: 1) correlations between fluctuating wind pressures on both roof surfaces, 2) eigenvalues and eigenvectors of covariance matrices of the fluctuating wind pressures, 3) probability distributions of the fluctuating wind pressures, and 4) statistical characteristics of peak factor. Furthermore, the applicability of the quasi-steady approach is discussed in detail. Based on the results, an empirical formula for estimating the minimum pressure coefficients, using a peak factor approach, is presented. Comparison of the minimum pressure coefficients determined by the proposed formula and those obtained from the wind tunnel tests is made to examine the applicability and accuracy of the proposed formula.

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