Investigation approaches to quantify wind-induced load and response of tall buildings: A review

Hou, Fangwei; Jafari, Mohammad

doi:10.1016/j.scs.2020.102376

Cited by 44 publications

(15 citation statements)

References 145 publications

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“…These buildings are subject to complicated loading conditions, particularly urban aerodynamics created by neighboring clusters of high-rise structures (Micheli et al, 2019). They are wind-prone structures due to their great flexibility and low natural frequency, and their response to wind loads is a critical parameter in their structural design (Hou and Jafari, 2020). Both the structural safety and the comfort of the use of tall buildings are seriously threatened by strong winds.…”

Section: Introductionmentioning

confidence: 99%

Use of aerodynamically favorable tapered form in contemporary supertall buildings

Ilgın

2022

DRArch

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Today, supertall buildings can be constructed in unusual forms as a pragmatic reflection of advances in construction techniques and engineering technologies, together with advanced computational design tools for architectural design. As with many other buildings, architectural and practical principles play a crucial role in the form of a supertall building, where aerodynamic behavior shaped by wind-induced excitations also becomes a critical design input. Various methods are used to meet the functional needs of these towers and reduce excitations, including aerodynamic modification methods directly related to the building form. Tapered forms are one of the most frequently used and most effective methods in today's skyscrapers, which significantly affect architectural design. To date, no study has been conducted in the literature that provides an understanding of the interrelationships between tapered building forms and main planning criteria, considering the aerodynamic design concerns of the tapering effect in supertall buildings (≥300 m). This important issue is explored in this article with data gathered from 41 supertall case studies, considering location, function, structural system, and structural material as well as the aerodynamic taper effect. The main findings of the study highlighted the following: (1) Asia was where tapered towers were most favored, with a wider margin in all regions; (2) mixed-use was the most preferred function in selected supertall buildings with tapered form; (3) outriggered frame systems were mainly used; (4) tapered supertall cases were mostly built in composite; (5) the sample group included 17 cases that used the tapering effect with aerodynamic design concerns, some of which were accompanied by corner modifications. It is believed that this study will be a basic guide for design and construction professionals including architectural and structural designers, and contractors.

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Section: Introductionmentioning

confidence: 99%

Use of aerodynamically favorable tapered form in contemporary supertall buildings

Ilgın

2022

DRArch

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“…The loads on the transmission line, tall buildings in cities, can be caused by weather‐related, accidental events and maintained activities 1 , whereby the weather‐related transmission line failure is largely due to local high‐intensity wind, ranging from fully matured tornadoes to various forms of downbursts 2–5 . Downbursts are strong ground‐level winds that typically emanate from thunderstorms and are responsible for the most of the transmission line and tower failures worldwide 6–10 , thunderstorms are responsible for 66% of high intensity wind events in the North‐Eastern United States involving damaging effects on building structures 7 .…”

Section: Introductionmentioning

confidence: 99%

A novel empirical model for vertical profiles of downburst horizontal wind speed

Dang,

Xing,

Wang

et al. 2024

Wind Energy

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This study proposes an empirical model for preliminary wind‐resist design of downburst flow. Existing empirical models were compared with field data and found to underpredict horizontal wind speed below the height corresponding to the maximum radial velocity, due to the neglect of viscous effects and the evolution of vertical wind profiles along radial direction. To address these deficiencies, semi‐empirical piecewise functions including wall shear effects in the local turbulent boundary layer and interpolation functions were proposed to improve the accuracy of existing models. The wind profile based on Coles' theory was found to agree well with field data, with the parabola interpolation function being the most desirable. Using the proposed method, the vertical profile of horizontal wind speed at different local radial locations can be predicted for wind resist design given the inlet wind speed of the downburst flow. Overall, this model improves upon existing empirical models and allows for more accurate wind‐resist design.

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“…Especially in complex wind fields, the role of wind loads on structural safety and comfort design is becoming increasingly evident [3,4]. The directions of wind-induced vibration of super-tall buildings are illustrated in Figure 1, and these can be broadly categorized into three types: across-wind, along-wind, and torsional [5][6][7]. Across-wind vibration occurs when a building is exposed to strong, steady winds perpendicular to its main axis, resulting in lateral forces that can cause the building to sway from side to side [8].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Aeroelastic Effects on Wind Load and Wind-Induced Response of a Super-Tall Building: An Experimental Study

Yin

2023

Buildings

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To investigate the wind-induced response and equivalent wind load of a super-tall building, an aeroelastic model of the building was designed to measure aerodynamic interference in wind tunnel tests. Experiments on pressure and vibration measurements were conducted in both uniform and turbulent wind fields, and the displacement response and surface wind pressure at different locations of the model were recorded. The displacement time-history response spectrum and aerodynamic spectrum in both fields were compared and analyzed. The research showed that the mean displacement responses of the model in the across-wind and along-wind directions gradually increased with velocity under different wind attack angles. The mean displacement response of torsion moment in a uniform wind field changed very little, and the mean and fluctuating wind pressures in each layer were significantly stratified, making it is easy to generate a coupled vortex-induced resonance. On the other hand, the mean displacement response of torsion moment in a turbulent field increased with wind velocity. Strong turbulence made the fluctuating wind pressure at the top and bottom of the model slightly more significant than in a uniform field. The resistance of super-tall buildings came from turbulence excitation in the along-wind direction and the self-excited resistance generated by the across-wind direction. The test methods and main research conclusions may provide a reference for glass curtain walls and the structural wind-resistant design of super-tall buildings.

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Investigation approaches to quantify wind-induced load and response of tall buildings: A review

Cited by 44 publications

References 145 publications

Use of aerodynamically favorable tapered form in contemporary supertall buildings

Use of aerodynamically favorable tapered form in contemporary supertall buildings

A novel empirical model for vertical profiles of downburst horizontal wind speed

The Influence of Aeroelastic Effects on Wind Load and Wind-Induced Response of a Super-Tall Building: An Experimental Study

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