| 设置透风孔的超高层建筑风荷载特性 |
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| 引用本文： | 李波,杨庆山,侯亚委,田玉基.设置透风孔的超高层建筑风荷载特性[J].土木工程学报,2011(Z1). |
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| 作者姓名： | 李波 杨庆山 侯亚委 田玉基 |
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| 作者单位： | 北京交通大学; |
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| 基金项目： | 国家自然科学基金青年基金(50808014);国家自然科学基金杰出青年基金(56237845) |
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| 摘 要： | 采用同步测压技术,进行设置透风孔的超高层建筑刚性模型风洞试验,对该类建筑物的风荷载特征进行研究。结果表明:孔洞附近,顺风向阻力表现出一定涡激力特性,横风向升力功率谱的谱峰下降幅度较大,阻力与升力系数的根方差均减小,但扭转向扭矩系数根方差的减小幅度有限。受孔洞影响的区域,阻力系数与扭矩系数的自相关性减弱,但升力系数的自相关性增强,阻力系数、升力系数的相干函数衰减程度减弱,相干系数的数值减小。设置透风孔后,超高层建筑升力系数、扭矩系数与阻力系数的互相关性不能再忽略不计,但升力系数与扭矩系数之间的互相关性有所减弱。
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| 关 键 词： | 超高层建筑 透风孔 风荷载 横风向 功率谱 相关性 |
Wind load characteristics of the super-tall building with through openings |
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| Li Bo Yang Qingshan Hou Yawei Tian Yuji.Wind load characteristics of the super-tall building with through openings[J].China Civil Engineering Journal,2011(Z1). |
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| Authors: | Li Bo Yang Qingshan Hou Yawei Tian Yuji |
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| Affiliation: | Li Bo Yang Qingshan Hou Yawei Tian Yuji(Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | High-Frequency-Pressure-Integration tests were carried out in a wind tunnel to investigate wind load characteristics of the super-tall buildings with through openings using rigid models.Test results show that,around the openings,drag exhibits vortex-induced characteristics to some extent and the reduced power spectra of lift decreases substantially.The root-mean-square of drag and lift coefficient decreases,while that of torsion coefficient decreases slightly.In the influence areas of the opening,sel-correl... |
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| Keywords: | super-tall building through openings wind load crosswind power spectra correlation |
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