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Wind tunnel study of pedestrian level wind environment around tall buildings: Effects of building dimensions, separation and podium

机译：高层建筑周围行人水平风环境的风洞研究：建筑尺寸，间隔和裙楼的影响

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摘要

It is well known that high-rise buildings affect the surrounding pedestrian level wind environment. In recent years, awareness and concern has increased about the creation of low wind speed areas around tali buildings which may lead to poor out-door air ventilation. In addition, new building developments are often not restricted to a single building, but comprise a row of buildings, which may have complex plan-forms, and some integrating an extensive podium. This paper aims at providing a fundamental understanding of wind-structure interactions that govern the effects of building dimensions and separations, a row of buildings and podium on the pedestrian level wind environment, for both weak and strong wind conditions, by a series of parametric wind tunnel studies. The study area covered an extensive area which covered up to 400 m downstream of the test buildings. The results show that a single wider building created adverse effects on the natural air ventilation at pedestrian level around the building while a taller building improved the near-field air ventilation conditions. In the studies of building separation effects, the results show an adverse effect on natural air ventilation at pedestrian level when the building separations are less than half the building width. Inclusion of a podium was also found to adversely affect the air movement around buildings.
机译：众所周知，高层建筑会影响周围的行人水平风环境。近年来，人们对塔利建筑物周围形成低风速区域的认识和关注增加，这可能导致室外空气流通不畅。此外，新建筑物的开发通常不限于一栋建筑物，而是包括一排建筑物，这些建筑物可能具有复杂的平面图，并且有些建筑物还包含大量讲台。本文旨在通过一系列参数风，对控制结构尺寸和间隔，一排建筑物和领奖台对行人水平风环境在弱风和强风条件下的风-结构相互作用的影响提供基本理解。隧道研究。研究区域覆盖了广阔的区域，覆盖了测试建筑物下游400 m。结果表明，一栋较宽的建筑物对建筑物周围行人水平的自然通风产生了不利影响，而较高的建筑物则改善了近场通风条件。在对建筑物隔离效果的研究中，结果显示，当建筑物间距小于建筑物宽度的一半时，会对行人水平的自然通风产生不利影响。还发现，登上领奖台会对建筑物周围的空气流动产生不利影响。

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  • 来源
    《Building and Environment》 |2012年第3期|p.167-181|共15页
  • 作者

    C.W. Tsang; K.C.S. Kwok; P.A. Hitchcock;

  • 作者单位

    CLP Power Wind/Wave Tunnel Facility, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong S.A.R., PR China;

    CLP Power Wind/Wave Tunnel Facility, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong S.A.R., PR China,School of Engineering, University of Western Sydney, Sydney, New South Wales, Australia;

    CLP Power Wind/Wave Tunnel Facility, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong S.A.R., PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    tall buildings; urban wind environment; pedestrian level wind; building dimensions; building separation; podium structure;

    机译：高的建筑;城市风环境;行人风建筑尺寸;建筑物隔离;讲台结构;

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