Experimental investigation of aerodynamic forces and wind pressures acting on tall buildings with various unconventional configurations

Tanaka, Hideyuki; Tamura, Yukio; Ohtake, Kazuo; Nakai, Masayoshi; Kim, Yong Chul

doi:10.1016/j.jweia.2012.04.014

Cited by 235 publications

(101 citation statements)

References 16 publications

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“…Haung and Chen (2007) investigated the wind load effects and equivalent static wind loads of 20 and 50 storey square tall buildings based on synchronous pressure measurements. Tanaka et al (2012) investigated the aerodynamic forces and wind pressures acting on a square-plan tall building models of identical heights and volumes with various configurations like corner cut, setbacks, helical and so on through wind tunnel testing. Merrick and Bitsuamlak (2009) studied the effect of building shape on the wind-induced forces and response of a structure through a comprehensive investigation of wind tunnel studies.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of wind forces and responses of rectangular tall buildings

Amin¹,

Ahuja

2014

Int J Adv Struct Eng

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This paper presents the results of wind tunnel tests on rectangular building models having the same plan area and height but different side ratios of 1, 1.56, 2.25, 3.06 and 4. The models were made from perspex sheet at a geometrical scale of 1:300. The wind pressure coefficients on all the models were evaluated from pressure records measured in a closed circuit wind tunnel under boundary layer flow for wind directions of 0°to 90°at an interval of 15°. The mean responses of rectangular tall buildings having different side ratios were also evaluated from the experimentally obtained wind loads. Effectiveness of side ratio of buildings in changing the surface pressure distribution and mean responses of prototype buildings is assessed for wind directions of 0°to 90°at an interval of 15°. It is observed that the side ratio of buildings significantly affects the wind pressures on leeward and sidewalls, whereas wind pressure on windward wall is almost independent of side ratio. Further, the wind incidence angles and side ratio of the buildings significantly affect its mean displacements as well as torque.

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Section: Introductionmentioning

confidence: 99%

Characteristics of wind forces and responses of rectangular tall buildings

Amin¹,

Ahuja

2014

Int J Adv Struct Eng

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“…응답 특성에 대한 많은 선행연구가 수행되었다 (Cho, et al, 2006;Kim and Ha, 2004;Kwok et al, 1988;Tanaka et al, 2012). (Cho and Lee, 2009;Chung, 2001;Kawai, 1998;Kim, 2014;Murakawa et al, 1996;Quan et al, 2005;Watanabe et al 1997;You et al, 2005 (Cho et al, 2005;Ha et al, 2002;.…”

Section: 서 론 일반적으로 장대교량 및 초고층건물과 같이 세장한 구조물은 풍방향 응답보다 풍직각방향 응답이 지배적이라unclassified

A Study on Aerodynamic Damping and Aeroelastic Instability of Helical-shaped Super Tall Building

Kim¹,

Akihito²,

Tamura³

et al. 2016

jcoseik

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In this paper, aeroelastic instability and aerodynamic damping ratio of a helical 180° model which shows better aerodynamic behavior in both along-wind and crosswind responses on a super tall building was investigated by an aeroelastic model test, and the aerodynamic damping ratio was evaluated from the wind-induced responses of the model by using Random Decrement Technique. Aerodynamic damping ratios evaluated in this study were verified through comparison with previous results obtained by quasi-steady theory. As a result, the aeroelastic instability of the helical 180° model in crosswind direction were not occurred for any conditions with increasing the reduced wind velocity while the square model generally encounters aeroinstability due to the vortex shedding. The aerodynamic damping in along-wind direction for the helical 180° and the square model increased monotonically both with reduced wind velocity, i.e., there is no relation with modifications of building shapes. On the other hand, in crosswind direction, the characteristics of aerodynamic damping ratio with reduced wind velocity for helical 180° model were quit different from those of the square model.

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“…Agarwal et al (2012) conducted a comprehensive wind tunnel test programme to investigate interference effects between two tall rectangular buildings. Tanaka et al (2012) carried out a series of wind tunnel experiments to determine aerodynamic forces and wind pressures acting on square-plan tall building models with various configurations: corner cut, setbacks, helical and so on. The number of literatures on interference effect on tall buildings other than rectangular plan shape is quite low.…”

Section: Introductionmentioning

confidence: 99%

Wind interference effect on an octagonal plan shaped tall building due to square plan shaped tall buildings

Kar

Dalui

2016

Int J Adv Struct Eng

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The variation of pressure at the faces of the octagonal plan shaped tall building due to interference of three square plan shaped tall building of same height is analysed by computational fluid dynamics module, namely ANSYS CFX for 0°wind incidence angle only. All the buildings are closely spaced (distance between two buildings varies from 0.4h to 2h, where h is the height of the building). Different cases depending upon the various positions of the square plan shaped buildings are analysed and compared with the octagonal plan shaped building in isolated condition. The comparison is presented in the form of interference factors (IF) and IF contours. Abnormal pressure distribution is observed in some cases. Shielding and channelling effect on the octagonal plan shaped building due to the presence of the interfering buildings are also noted. In the interfering condition the pressure distribution at the faces of the octagonal plan shaped building is not predictable. As the distance between the principal octagonal plan shaped building and the third square plan shaped interfering building increases the behaviour of faces becomes more systematic. The coefficient of pressure (C p ) for each face of the octagonal plan shaped building in each interfering case can be easily found if we multiply the IF with the C p in the isolated case.

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Experimental investigation of aerodynamic forces and wind pressures acting on tall buildings with various unconventional configurations

Cited by 235 publications

References 16 publications

Characteristics of wind forces and responses of rectangular tall buildings

Characteristics of wind forces and responses of rectangular tall buildings

A Study on Aerodynamic Damping and Aeroelastic Instability of Helical-shaped Super Tall Building

Wind interference effect on an octagonal plan shaped tall building due to square plan shaped tall buildings

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