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基于一栋立面上有多个开洞的矩形截面超高层建筑的刚性模型表面压力测量风洞试验结果,分析了矩形截面超高层建筑在长边立面上不同开洞工况下建筑各表面平均风压系数和最不利风压系数的变化规律。试验结果表明:当建筑长边迎风时,开洞使得背风面洞口附近的平均风压系数绝对值增大,但迎风面上的平均风压系数变化很小;当建筑短边迎风时,开洞对洞口附近的平均风压系数和最不利正风压系数均只有微弱影响,但对其最不利负风压系数却有很大影响,特别是中部开洞,将使其周围的最不利负风压系数增大一倍以上;开洞对短边立面上的最不利风压系数不产生明显的影响。为有结构开洞的高层建筑洞口附近的围护结构设计提供了参考数据。
Based on the wind tunnel test results of the rigid model surface pressure measurement of a rectangular cross-section super high-rise building with several open holes on the façade, The average wind pressure coefficient and the most unfavorable wind pressure coefficient. The test results show that when the long side of the building winds up, the average wind pressure coefficient around the hole in the leeward side increases with the opening, but the average wind pressure coefficient on the windward side changes little. When the short side of the building winds up, The average wind pressure coefficient and the most unfavorable positive wind pressure coefficient around the hole are only slightly affected, but it has a great impact on the most adverse negative air pressure coefficient, especially in the middle of the hole, which will make the most adverse negative wind around it The pressure coefficient is more than doubled; the most unfavorable wind pressure coefficient on the short side elevation does not have a significant effect on the opening. It provides the reference data for the design of enveloping structures near the openings of high-rise buildings with structural openings.