测压管道系统对高层建筑风压特性影响的研究

发布时间：2018-03-02 18:07

  本文选题：高层建筑　切入点：风洞试验　出处：《建筑结构》2016年23期 　论文类型：期刊论文

【摘要】：在边界层风洞中完成了测压管长分别为0.6,0.8,1.0,1.2,1.5m的矩形截面高层建筑刚性模型的同步测压试验。研究了不考虑测压管道系统修正时,测压管道长度对建筑表面风压特性及脉动风压相关性的影响。结果表明:测压管道的长短对平均风压系数影响较小,但对脉动风压的影响较大,脉动风压系数在迎风面的偏差在5%以内,在背风面的偏差在10%左右,在侧风面的偏差最大为15%~30%;对侧风面上风向的风压极值影响较为明显,尤其是2/3高度以上,随着测压管长的增大,侧风面上风向风压极值的最小值逐渐沿高度下移;测压管长对迎风面测点竖向相关性影响较小,侧风面测点风压相关性随测压管长的增大而增大,而背风面测点竖向相关性随测压管长的增大而减小。
[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.
【作者单位】： 武汉市建设工程设计审查办公室;湖南大学土木工程学院;武汉开发投资有限公司;香港城市大学建筑学及土木工程学系;
【基金】：国家自然科学基金重大研究计划重点项目(91215302);国家自然科学基金面上项目(51178179)
【分类号】：TU973.213
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本文编号：1557598