Wind Load on Integral-Lift Scaffolds for Tall Building Construction
Publication: Journal of Structural Engineering
Volume 131, Issue 5
Abstract
The integral-lift scaffolds are widely used in construction of tall buildings in Asia. However, the wind load on scaffolds may be much greater than dead load and be the dominant effect as the scaffolds climb over in height. The shape coefficient and vibration coefficient are important factors in calculation of wind load. However, there is no available approach at present for determining the two coefficients for calculating the wind load on this temporary structure. In order to determine the shape coefficient of wind pressure on the typical scaffolds, wind tunnel tests have been conducted. The drag coefficients have been measured, which are proved to be identical to the wind shape coefficients. By using random vibration theory, formulae are obtained for predicting the wind vibration coefficients of the scaffolds at the two stages of climbing up and down. The useful guidelines for the safe design of integral-lift scaffolds against winds are proposed in this paper.
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Acknowledgments
The writers are grateful to the financial support from Shanghai Construction Technology Foundation. They are also grateful to Professor Jing-zhong Song and Feng Zhang, staff of the State Key Laboratory for Disaster Reduction in Civil Engineering at Tongji University, for their help in the experimental scheme and their kindly assistance. Furthermore, they extend thanks to Mr. Yi Zhang and Yi-hai Bao, graduate students of the Department of Building Structural Engineering of Tongji University, for their preparation work on the test model and participation in developing the early program for calculating wind vibration coefficient, respectively. The writers also wish to thank Professor Ming Gu, Department of Bridge Engineering, Tongji University, for his valuable advice on this paper.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 131 • Issue 5 • May 2005
Pages: 816 - 824
Copyright
© 2005 ASCE.
History
Received: Apr 11, 2002
Accepted: Nov 19, 2004
Published online: May 1, 2005
Published in print: May 2005
Notes
Note. Associate Editor: Sashi K. Kunnath
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