Field measurements of natural periods of vibration and structural damping of wind-excited tall residential buildings

Campbell, Scot E.; Kwok, K.C.S.; Hitchcock, Peter; Tse, K.T.; Leung, Hau Yan

doi:10.12989/was.2007.10.5.401

Cited by 38 publications

(17 citation statements)

References 9 publications

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“…of the modal frequencies resulted smaller than 2% and they decreased with the model height. These frequency changes are smaller than those reported by other authors [15][16][17]. Since the accidental eccentricity is the only source of change considered in this study, the frequency changes are small.…”

Section: Building Models and Earthquake Recordscontrasting

confidence: 72%

Accidental eccentricities, frame shear forces and ductility demands of buildings with uncertainties of stiffness and live load

De-la-Colina

González-Pérez

Valdés-González

2016

Engineering Structures

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Section: Building Models and Earthquake Recordscontrasting

confidence: 72%

Accidental eccentricities, frame shear forces and ductility demands of buildings with uncertainties of stiffness and live load

De-la-Colina

González-Pérez

Valdés-González

2016

Engineering Structures

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“…Numerous field measurements of wind effects on tall buildings have been carried out [1][2][3][4][5][6][7][8][9], including the measurement programs on four Chicago tall buildings currently being undertaken by Notre Dame University and the University of Western Ontario [6] and on 10 super-tall buildings in Hong Kong and Mainland China by City University of Hong Kong [4,5]. These studies provided useful information on the dynamic behaviors, such as natural frequencies, mode shapes and damping ratios, and the wind-induced vibrations of tall buildings.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of typhoon effects on a super-tall building in Hong Kong

Zhi

et al. 2013

Struct. Control Health Monit.

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SUMMARY A super‐tall building with height of 420 m and 88 floors is located in central Hong Kong. Field monitoring of wind effects on the high‐rise structure was conducted during the passage of several typhoons on the basis of a wind and movement monitoring system installed in the building. Field data such as wind speed, wind direction, pressures on cladding, acceleration and displacement responses were simultaneously recorded during the typhoons and then analyzed. Typhoon wind parameters including turbulence intensity, gust factor, peak factor, turbulence integral length scale and power spectral density were presented and discussed. The dynamic properties of the high‐rise structure were determined from the field measurements and compared with those calculated at the design stage. The damping ratios of the super‐tall building were evaluated by a random decrement technique, which demonstrates amplitude‐dependent characteristics. The relationships between the structural dynamic responses and the approaching wind speed were analyzed. Wind tunnel tests were conducted to investigate the wind effects on the super‐tall building. The field‐measured acceleration responses were found to be consistent with the model test results. Finally, the serviceability performance of the super‐tall building during the typhoons was assessed on the basis of the field measurement results. The findings of the paper are expected to be of considerable interest and practical use to professionals and researchers involved in wind‐resistant designs of super‐tall buildings. Copyright © 2013 John Wiley & Sons, Ltd.

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“…In contrast, winds are regular occurrences and hence have been used by many researchers and professionals as a reliable source of excitation for research and consulting projects (eg. Kwok, 1992;Campbell et al, 2007;Kijewski-Correa et al, 2007;Park et al, 2008;Au & Zhang, 2010;Kwok et al, 2011).…”

Section: Ambient Excitation Methodsmentioning

confidence: 99%

“…Kwok (1992) reported the results of measurements conducted on 24 tall buildings and observation/ control towers. Measurements have also been undertaken on a number of tall buildings in Hong Kong (Campbell et al, 2007). The spectra of windinduced acceleration responses measured by using a pair of accelerometers aligned with the major building axes accurately identified spectral peaks which correspond to frequencies of the fundamental modes, and occasionally the higher modes, of vibration.…”

Section: Ambient Excitation Methodsmentioning

confidence: 99%

Behaviour of tall buildings and structures in strong winds: Dynamic properties, response characteristics and vibration mitigation

Kwok¹

2013

AJSE

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This paper presents techniques and instrumentation employed in the measurement of dynamic structural properties of tall buildings and structures, long-term monitoring of their responses in strong winds, and vibration mitigation systems installed in actual buildings and structures. The merits and limitations of these techniques are discussed. Natural frequencies of vibration, defl ected mode shapes and damping values can be determined reliably through dynamic measurements on actual buildings, and these results provide invaluable validations of numerical modelling techniques and generalised prediction formulae. The improved accuracy of prediction processes, coupled with a better understanding of building performance in strong winds, through long-term building monitoring, can lead to signifi cant cost savings in the wind-resistant design and construction of tall buildings.

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Field measurements of natural periods of vibration and structural damping of wind-excited tall residential buildings

Cited by 38 publications

References 9 publications

Accidental eccentricities, frame shear forces and ductility demands of buildings with uncertainties of stiffness and live load

Accidental eccentricities, frame shear forces and ductility demands of buildings with uncertainties of stiffness and live load

Monitoring of typhoon effects on a super-tall building in Hong Kong

Behaviour of tall buildings and structures in strong winds: Dynamic properties, response characteristics and vibration mitigation

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