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Net pressure and correlation characteristics between internal and external pressures for tall building with opening

机译：开孔高层建筑的净压力和内外压力的相关特性

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摘要

Net pressure and correlation characteristics between internal and external pressures for a typical high-rise building with a dominant opening are detailed investigated by a series of wind tunnel experiments on a scaled rigid model. The experimental results show that internal pressures are absolutely spatially relevant. When the dominant opening faces to approaching wind, there exists strong positive correlation between internal and external pressures of each tap on the windward wall, whereas negative correlation can be observed for each tap on the other walls. At the wind directions of 15 degrees and 75 degrees, the highest negative correlation coefficient occurs on the right side wall and is up to -0.6 and the mean values of area-averaged net pressure coefficient on the right side wall also reach their maximum and minimum values, respectively; meanwhile, the values of standard deviation of area-averaged net pressure coefficient are also much higher. Thus, it should be paid more attention to the wind-resistant design of side wall envelopes because they are easier to be destroyed.
机译：通过一系列按比例缩放的刚性模型进行的风洞实验，详细研究了具有显性开口的典型高层建筑的净压力以及内部和外部压力之间的相关特性。实验结果表明，内部压力在空间上绝对相关。当主要开口面对迎风时，迎风壁上每个水龙头的内部和外部压力之间存在很强的正相关关系，而其他壁上每个水龙头的负压力之间都存在负相关关系。在15度和75度的风向中，最大负相关系数出现在右侧壁上，最高为-0.6，右侧壁上的面积平均净压力系数的平均值也达到最大值和最小值值；同时，面积平均净压力系数的标准偏差值也要高得多。因此，应该更加注意侧壁封套的防风设计，因为它们更容易被破坏。

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  • 来源
    《Structural Design of Tall Buildings》 |2019年第9期|e1607.1-e1607.14|共14页
  • 作者

    Wang Xu; Qian Yuanhao; Yu Xianfeng; Xie Zhuangning;

  • 作者单位

    Chongqing Jiaotong Univ, State Key Lab Breeding Base Mt Bridge & Tunnel En, Chongqing, Peoples R China|South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510640, Guangdong, Peoples R China;

    Chongqing Jiaotong Univ, State Key Lab Breeding Base Mt Bridge & Tunnel En, Chongqing, Peoples R China;

    South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou 510640, Guangdong, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    correlation coefficient; dominant opening; internal pressure; net pressure; power spectrum; tall building;

    机译：相关系数;主导开口;内部压力;净压;功率谱;高层建筑;

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