柴晓兵, 刘庆宽, 郑云飞. 结构干扰对煤棚表面风荷载影响的试验研究[J]. 工程力学, 2023, 40(S): 174-183. DOI: 10.6052/j.issn.1000-4750.2022.06.S029
引用本文: 柴晓兵, 刘庆宽, 郑云飞. 结构干扰对煤棚表面风荷载影响的试验研究[J]. 工程力学, 2023, 40(S): 174-183. DOI: 10.6052/j.issn.1000-4750.2022.06.S029
CHAI Xiao-bing, LIU Qing-kuan, ZHENG Yun-fei. WIND TUNNEL EXPERIMENT STUDY ON WIND LOAD OF COAL SHED STRUCTURE BY INTERFERENCE EFFECT[J]. Engineering Mechanics, 2023, 40(S): 174-183. DOI: 10.6052/j.issn.1000-4750.2022.06.S029
Citation: CHAI Xiao-bing, LIU Qing-kuan, ZHENG Yun-fei. WIND TUNNEL EXPERIMENT STUDY ON WIND LOAD OF COAL SHED STRUCTURE BY INTERFERENCE EFFECT[J]. Engineering Mechanics, 2023, 40(S): 174-183. DOI: 10.6052/j.issn.1000-4750.2022.06.S029

结构干扰对煤棚表面风荷载影响的试验研究

WIND TUNNEL EXPERIMENT STUDY ON WIND LOAD OF COAL SHED STRUCTURE BY INTERFERENCE EFFECT

  • 摘要: 为了确保大跨煤棚结构不被风荷载破坏,通过刚性模型测压风洞试验研究有、无干扰对煤棚结构风荷载的影响。结果表明:结构正对来流方向主要承受风压力作用,屋盖顶部主要承受风吸力作用,屋盖顶部风吸力最大;风荷载沿风向表现明显梯度,具有渐变性;施扰煤棚遮挡效应整体减小了受扰煤棚的风荷载,但也要注意干扰造成受扰煤棚局部风荷载变大的不利影响;当待测模型和干扰模型沿风向并列布置时,结构中间区域风荷载几乎不随跨向位置改变而改变,结构沿展向部分区域风荷载急剧变化。研究结果可为大跨煤棚结构抗风设计提供参考依据。

     

    Abstract: In order to ensure that the large-span coal shed structure is not damaged by wind load, a series wind tunnel tests was carried out to obtain the wind shape coefficient on the interference effect of coal shed structure. The results show that the structure is mainly subjected to wind pressure in the direction of incoming flow, the roof top is mainly subjected to wind suction, and the wind suction on the top of the roof is the largest. The distribution of wind load on the module shows an obvious gradient along the wind, and the wind load is gradual. The shielding effect of interference coal shed reduces the wind load of the structure as a whole, but we should also pay attention to the phenomenon that the interference causes the local wind load to become larger. When the model to be tested and the interference model are arranged in parallel along the wind direction, the wind load in the middle area of the structure almost does not change with the change of the span direction position, and the wind load in some areas of the structure along the deployment direction changes sharply. The results can provide a reference for the wind resistance design of large-span coal shed structures.

     

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