Local or Micro or Minor Aerodynamic Modifications in Tall Buildings: A Critical Review

Authors

  • Harish, Awadhesh Kumar

Abstract

Tall buildings are going taller and taller in height, because of innovation in structural systems by new construction techniques and advances in engineering methodologies. Traditionally, architectural studies, design quality, site location, etc. have been taken into account in place of aerodynamic factors when determining the geometry and alignment of tall buildings. The exterior configuration of the structure is one of the key factors that influence designed wind pressure and reactions. As a result, they’re bluff bodies associated with high motion induced by the wind structure. The most effective way to increase the safety and use of tall buildings in heavy winds is through aerodynamic modifications.Depending on the impact of modifying the outside geometry of the structure, the aerodynamic modifications are divided into two Varity, i.e. local or micro or minor (corner-cut, recession, etc.) and global or macro or major (twisting, setback, etc.) modifications. Also, this study comprehensively explores the recent/past local or micro or minor aerodynamic modifications on tall buildings. Local, micro, or minor modifications (corner-cutting, corner-rounding, chamfering, etc.) can reduce wind load by 30–60% because they make it easier for the shear layer to reconnect and reduce the trailing area on the building's windward side. This study presents a fast description of several local, micro, or minor aerodynamic improvements to reduce wind stress on tall buildings. Aerodynamic modifications considerably lessen the influence of dynamic loading on tall buildings.

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Published

2022-07-30