大跨悬挑屋盖结构形式对抗风性能的影响

吴海洋 梁枢果 郭必武

doi:10.11835/j.issn.1674-4764.2007.05.019

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大跨悬挑屋盖结构形式对抗风性能的影响

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- 大跨悬挑屋盖结构形式对抗风性能的影响
- The Effect of Structure Form on Wind Resistance of Large Cantilevered Roof
- 土木与环境工程学报（中英文） 2007年29卷第5期页码：97-102
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- DOI：10.11835/j.issn.1674-4764.2007.05.019
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- 纸质出版：2007
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吴海洋梁枢果郭必武. 大跨悬挑屋盖结构形式对抗风性能的影响[J]. 土木与环境工程学报（中英文）, 2007,29(5):97-102.

The Effect of Structure Form on Wind Resistance of Large Cantilevered Roof[J]. Journal of Civil and Environmental Engineering, 2007, 29(5): 97-102.
吴海洋梁枢果郭必武. 大跨悬挑屋盖结构形式对抗风性能的影响[J]. 土木与环境工程学报（中英文）, 2007,29(5):97-102. DOI： 10.11835/j.issn.1674-4764.2007.05.019.

The Effect of Structure Form on Wind Resistance of Large Cantilevered Roof[J]. Journal of Civil and Environmental Engineering, 2007, 29(5): 97-102. DOI： 10.11835/j.issn.1674-4764.2007.05.019.

摘要

以两个援外大型体育场主看台悬挑屋盖为工程背景，基于风洞试验刚性模型风压测试数据，从振型、频率以及在风荷载作用下的平均风压系数和脉动风荷载谱密度诸方面，分析和比较了有拱和无拱两种结构形式的大跨悬挑屋盖结构的抗风性能，得出悬挑屋盖挑蓬前沿拱可以明显改善屋盖结构抗风性能的结论，并且通过运用随机振动理论对两体育场悬挑屋盖进行风振响应计算验证了上述结论，总结出前沿拱有利于大跨度悬挑屋盖结构抗风的几点原因。

Abstract

On the background of grandstand cantilevered roofs of two aiding foreign stadiums

the wind resistance of two large cantilevered roofs with different structure forms is compared on the basis of pressure data acquired from wind tunnel test of rigid models

according to their models

frequencies

mean wind pressure coefficients and fluctuating wind pressure power spectrum densities. A conclusion is made that the arch on the front edge of the large roof can improve the wind resistance

and is validated by calculating wind induced responses of the two kinds of the large roofs. Finally

several reasons for that the arch on the front edge is beneficial to the wind resistance of the large cantilevered roof are concluded.

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