국제초고층학회논문집 (International Journal of High-Rise Buildings)

  • 제8권4호
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  • Pages.235-253
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  • 2019
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  • 2234-7224(pISSN)
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  • 2288-9930(eISSN)
한국초고층도시건축학회 (Council on Tall Building and Urban Habitat Korea)
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Shape Effects on Aerodynamic and Pedestrian-level Wind Characteristics and Optimization for Tall and Super-Tall Building Design

  • Kim, Yong Chul (Department of Architecture, Tokyo Polytechnic University) ;
  • Xu, Xiaoda (Central Research Institute of Building and Construction CO., LTD.) ;
  • Yang, Qingshan (School of Civil Engineering, Chongqing University) ;
  • Tamura, Yukio (School of Civil Engineering, Chongqing University)
  • 발행 : 2019.12.01
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초록

This paper reviews shape optimization studies for tall and super-tall building design. Firstly, shape effects on aerodynamic and response characteristics are introduced and discussed. Effects of various configurations such as corner modifications, taper, setback, openings, and twists are examined. Comprehensive comparative studies on various configurations including polygon building models, and composite type building models such as corner-cut and taper, corner-cut and taper and helical, and so on, are also discussed under the conditions of the same height and volume. Aerodynamic characteristics are improved by increasing the twist angle of helical buildings and increasing the number of sides of polygon buildings, but a twist angle of $180^{\circ}$ and a number of sides of 5 (pentagon) seem to be enough. The majority of examined configurations show better aerodynamic characteristics than straight-square. In particular, composite type buildings and helical polygon buildings show significant improvement. Next, shape effects on pedestrian-level wind characteristics around tall and super-tall buildings are introduced and discussed. Corner modification buildings show significant reductions in speed-up areas. On the other hand, setback and tapered models with wider projected widths near the ground show adverse effects on pedestrian-level wind characteristics.

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