Methodologies to mitigate wind-induced vibration of tall buildings: A state-of-the-art review

Jafari, Mohammad; Alipour, Alice

doi:10.1016/j.jobe.2020.101582

Cited by 45 publications

(18 citation statements)

References 155 publications

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“…Aerodynamic shapes prevent the development of vortices formation from leeward and windward sides of the structure. therefore, the formation of consistent vortices can be obstructed [10,13,20,21]. Aerodynamic modifications can be classified into two categories according to modification of exterior form of the tall building represented as corner modification (minor) and outer shape modification (major) [20].…”

Section: Aerodynamic Modifications Of Tall Buildingsmentioning

confidence: 99%

The Aerodynamic Performance of Tall Buildings by Utilizing Aerodynamic Modifications - A Review Study

Al-masoodi

Alkhatib

Shafiq

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Since the beginning of this century, the trends in urban development have accelerated, as well as the demands for professional designers and planners have also been changed. Therefore, the rapid development in tall buildings has brought many challenges and issues that required systematic research and development. One of the major issues of the tall building to the structural designers is the wind load effect. Thus, the building shape and configuration should be determined based on the considerations of building’s form and function for wind effect. Various approaches are required to maintain the functional needs for reducing the vortex shedding phenomenon of the wind, such as aerodynamic modification techniques, which cause discomfort for the occupants. Aerodynamic modifications are classified into two categories; corner modifications, like rounded corners, recessed corners, chamfered corners, etc, and outer shape modifications, such as taper, set-back, twist of building form, etc. This paper reviews the aerodynamic modification techniques for tall buildings; recession and set-back type are the most effective among these modifications. It concludes that design modifications must be evaluated earlier in the design stage to mitigate the wind load and address serviceability concerns as per recommended, as well as to set the optimal building’s shape.

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Section: Aerodynamic Modifications Of Tall Buildingsmentioning

confidence: 99%

The Aerodynamic Performance of Tall Buildings by Utilizing Aerodynamic Modifications - A Review Study

Al-masoodi

Alkhatib

Shafiq

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…High-rise structures are vulnerable to structural vibrations induced by wind and earthquake loadings [ 1 , 2 ]. These structural vibrations if not mitigated properly can cause discomfort to the occupants [ 3 , 4 ] and possible structural failures [ 5 – 7 ]. Therefore, coping with these unwelcoming structural vibrations and keeping the structures within the serviceability limits are the key concerns of structural engineers [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

An experimental study of tuned liquid column damper controlled multi-degree of freedom structure subject to harmonic and seismic excitations

Shah

Usman

2022

PLoS ONE

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A tuned liquid column damper (TLCD) is a passive vibration control device that not only mitigates unwanted structural vibrations but also acts as a water storage facility in a building. These aspects of TLCD make its application specifically suited for building structures. Previously, many experimental works on TLCDs have been conducted considering a single degree of freedom (SDOF) structure. However, the performance of TLCDs to control the response of multi-degree of freedom (MDOF) structure has rarely been studied experimentally. Therefore, this study has investigated the performance of a tuned liquid column damper (TLCD) on a multi-degree of freedom (MDOF) structure using shake table testing. A four-storey steel frame structure equipped with TLCD at the top of the fourth storey has been studied. Experimental normalized frequency response curves for MDOF structure equipped with TLCD have been determined. For this purpose, a series of harmonic loadings including frequencies 0.65 Hz, 1.17 Hz, 1.30 Hz, 1.43 Hz and 1.95 Hz have been applied in addition to historic earthquake loading. Peak and root-mean-square (RMS) accelerations have been discussed in detail for all the applied loadings at each storey level of the structure. For comparison purposes, the percentage reductions in peak and RMS accelerations have been calculated and compared. Also, RMS displacements and inter-storey drifts have been presented for resonant and seismic excitations. Both in time and frequency domains, responses of controlled MDOF structure have been analyzed and compared with uncontrolled structure. Results confirmed that TLCD has improved the MDOF structure responses at harmonic loadings frequencies near resonance and historic earthquake excitations. Furthermore, the improvement in the responses of MDOF structure with TLCD is more prominent at harmonic loadings compared to historic earthquake loading.

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“…However, due to the large size of wind turbine towers, the method of structural modification is very difficult and will increase construction costs. Therefore, great attention has been paid in engineering to the two methods of auxiliary dampers and aerodynamic shape modification [12].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Continuous Trapezoidal Straight Spoiler Plates on the Vortex-Induced Vibration of Wind Turbine Towers

Zhang

Chen³

et al. 2022

Atmosphere

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This paper proposes a method of controlling the vortex-induced vibration (VIV) of wind turbine towers by adding continuous trapezoidal straight spoiler plates (TS) onto their outer surface: a fluid–solid coupling model was constructed to simulate the processes of Karman vortex generation and shedding on the different surfaces of an original tower (O–tower) and a tower with TS (TS–tower) with assumed and actual Re, while the VIV frequencies were also calculated and compared; the effects of the TS geometry parameters on the VIV frequency of towers were studied to investigate the recommended size; a modal analysis was carried out to research the effects of TS on the vortex-induced resonance risk of towers; and the simulation results as well as relevant research conclusions were validated by an analogical wind tunnel test.

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Methodologies to mitigate wind-induced vibration of tall buildings: A state-of-the-art review

Cited by 45 publications

References 155 publications

The Aerodynamic Performance of Tall Buildings by Utilizing Aerodynamic Modifications - A Review Study

The Aerodynamic Performance of Tall Buildings by Utilizing Aerodynamic Modifications - A Review Study

An experimental study of tuned liquid column damper controlled multi-degree of freedom structure subject to harmonic and seismic excitations

The Effect of Continuous Trapezoidal Straight Spoiler Plates on the Vortex-Induced Vibration of Wind Turbine Towers

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