珠江新城地区超高层建筑风压分布及风致响应干扰效应研究
Study of Wind Pressure Distribution and Wind-Induced Response Interference Effects on a Super Tall Building in Guangzhou Pearl River New Town
DOI: 10.12677/HJCE.2018.73047, PDF,    国家自然科学基金支持
作者: 李慧真*：科大讯飞股份有限公司，安徽 合肥；张明亮：湖南建工集团有限公司，湖南 长沙
关键词: 高层建筑；风致响应；干扰效应；基底弯矩；峰值加速度；风洞试验；Tall Building； Wind Induced Response； Interference Effects； Bend Moment； Peak Acceleration； Wind Tunnel Test
摘要: 对珠江新城地区某超高层建筑开展了缩尺比为1:500的刚性模型风洞试验研究。基于试验结果，详细讨论周边建筑物对该结构表面风压分布特性以及风致响应的影响。结果表明：珠江新城地区的高层建筑物在周围建筑物的干扰下的表面风压分布与单体建筑不完全相同，峡谷风效应和尾流受扰均会导致主体建筑表面风压系数的增大；干扰情况下的基底峰值弯矩最大值为对应风向角单体情况下的1.83倍；结构顶部最大峰值加速度由横风向控制，按风玫瑰结果计算的顶部最大峰值加速度可以满足规范要求。
Abstract: Wind tunnel experiments were conducted for rigid model of a super tall building located in Guangzhou Pear River New Town with a geometric length scale of 1:500. Based on the test results, the effects of the surrounding buildings to the wind pressure distributions and wind-induced re-sponse of the objective building were discussed in detail. The results show that wind pressure distributions under interference are quite different from isolate building. Both channeling effect and disturbed wake flow can lead to amplification of wind pressure coefficients. The maximum value of peak base moment under interference is 1.83 times of isolate building at the same wind direction. The maximum peak acceleration at the top of structure is controlled by cross wind, and the peak acceleration can meet the requirements of the design standard while calculating by the wind rose.
文章引用：李慧真, 张明亮. 珠江新城地区超高层建筑风压分布及风致响应干扰效应研究[J]. 土木工程, 2018, 7(3): 409-420. https://doi.org/10.12677/HJCE.2018.73047

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