本文選題：高層建筑　切入點：風(fēng)洞試驗　出處：《建筑結(jié)構(gòu)》2016年23期 　論文類型：期刊論文

【摘要】：在邊界層風(fēng)洞中完成了測壓管長分別為0.6,0.8,1.0,1.2,1.5m的矩形截面高層建筑剛性模型的同步測壓試驗。研究了不考慮測壓管道系統(tǒng)修正時,測壓管道長度對建筑表面風(fēng)壓特性及脈動風(fēng)壓相關(guān)性的影響。結(jié)果表明:測壓管道的長短對平均風(fēng)壓系數(shù)影響較小,但對脈動風(fēng)壓的影響較大,脈動風(fēng)壓系數(shù)在迎風(fēng)面的偏差在5%以內(nèi),在背風(fēng)面的偏差在10%左右,在側(cè)風(fēng)面的偏差最大為15%~30%;對側(cè)風(fēng)面上風(fēng)向的風(fēng)壓極值影響較為明顯,尤其是2/3高度以上,隨著測壓管長的增大,側(cè)風(fēng)面上風(fēng)向風(fēng)壓極值的最小值逐漸沿高度下移;測壓管長對迎風(fēng)面測點豎向相關(guān)性影響較小,側(cè)風(fēng)面測點風(fēng)壓相關(guān)性隨測壓管長的增大而增大,而背風(fēng)面測點豎向相關(guān)性隨測壓管長的增大而減小。
[Abstract]:In the boundary layer wind tunnel, the simultaneous pressure measurement tests of rigid models of rectangular section high-rise buildings with a length of 0.6 ~ 0.81.0 ~ 1.2 ~ 1.5 m have been completed respectively. When the pressure measurement pipeline system is not considered, the pressure measurement system has been studied. The influence of pipe length on the wind pressure characteristics of building surface and the correlation of fluctuating wind pressure. The results show that the length of the pressure measuring pipe has little effect on the average wind pressure coefficient, but has a great effect on the fluctuating wind pressure. The deviation of the fluctuating wind pressure coefficient is less than 5% on the upwind surface, about 10% on the leeward surface, and the maximum deviation on the sidewind surface is 15300.The wind pressure extreme value of the wind direction on the opposite side of the wind is more obvious, especially the height above 2/3, With the increase of the length of the pressure measuring pipe, the minimum value of the maximum value of the wind direction wind pressure on the crosswind surface gradually moves down along the height, and the length of the pressure measuring tube has little effect on the vertical correlation of the measuring point on the upwind surface, and the correlation of the wind pressure on the side wind surface point increases with the increase of the length of the pressure measuring pipe. The vertical correlation of the measured points on the leeward surface decreases with the increase of the pressure tube length.
【作者單位】： 武漢市建設(shè)工程設(shè)計審查辦公室;湖南大學(xué)土木工程學(xué)院;武漢開發(fā)投資有限公司;香港城市大學(xué)建筑學(xué)及土木工程學(xué)系;
【基金】：國家自然科學(xué)基金重大研究計劃重點項目(91215302);國家自然科學(xué)基金面上項目(51178179)
【分類號】：TU973.213
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本文編號：1557598