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.
References
Ao, H. F. (2000). “Research on the overall load-bearing capacity of tube-and-coupler scaffolds.” ME dissertation, Tongji Univ., Shanghai, China.
Chan, S. L., Zhou, Z. H., Chen, W. F., Peng, J. L., and Pan, A. D. (1995). “Stability analysis of semi-rigid steel scaffolding.” Eng. Struct., 17(8), 568–574.
Chen, Z. M., and Yuan, Y. (2000). “Design analysis of an integral lifting scaffold for super-high buildings.” Proc., Int. Symp. of Civil Engineering in the 21st Century, Chinese Academy of Engineering, Beijing, 227–232.
The Construction and Management Commission of the Shanghai Municipal Government, People’s Republic of China. (1999). STCIS safety and technology code of integral-lift scaffold attached to structure in construction, DGJ08-905-99, Shanghai, China (in Chinese).
Du, R. J. (1999). “Progress of technology and management of attached self-lifting scaffolds in China.” Constr. Technol., 190(28), 4–8 (in Chinese).
Harung, H. S., Lightfoot, E., and Duggan, D. M. (1975). “The strength of scaffold towers under vertical loading.” Struct. Eng., 3(1), 23–28.
Li, G. Q. (1999). The design theory of load and reliability for engineering structure, China Architecture and Building Press, Beijing (in Chinese).
Mi, J. P. (1999). “Trend of development of new-type scaffolds in China.” Constr. Technol., 190(28), 1–3 (in Chinese).
The Ministry of Construction of People’s Republic of China. (2001). CSBSL standards on building structure loads, GB50009, China Architecture and Building, Beijing (in Chinese).
The Ministry of Construction of People’s Republic of China. (2000). CTPIS temporary provisions for integral-lift scaffold attached to structure in construction, China Architecture and Building Press, Beijing (in Chinese).
Peng, J. L., Pan, A. D. E., and Chen, W. F. (2001). “Approximate analysis method for modular tubular falsework.” J. Struct. Eng., 127(3), 256–263.
Peng, J. L., Pan, A. D. E., Chen, W. F., Yen, T., and Chan, S. L. (1997). “Structural modeling and analysis of modular falsework systems.” J. Struct. Eng., 123(9), 1245–1251.
Rouse, H. (1950). “Form drag of composite surfaces.” Selected writing of Hunter Rouse, Dover, New York, 248–253.
Wooton, L. R., and Scruton, C. (1971). “Aerodynamic stability.” The modern design of wind-sensitive structures, Construction Industry Research and Information Association, London, 65–81.
Xu, Ch. B., et al. (1989). “Theoretical analysis and experimental study on working behavior of tubular steel scaffold joining by couplers.” J. Harbin Archit. Eng. Inst., 22(2), 38–55.
Yue, F. (2002). “Wind loading and ultimate load-carrying capacity study on self-climbing tubular steel scaffolding attached to super-tall building in construction.” PhD dissertation, Tongji Univ., Shanghai, China.
Zhang, X. T. (1985). The computing of the wind pressure and wind vibration for structure, Tongji Univ. Press, Shanghai, China (in Chinese).
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© 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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