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http://dx.doi.org/10.12989/was.2016.23.5.385

Across-wind dynamic loads on L-shaped tall buildings  

Li, Yi (School of Civil Engineering, Hunan University of Science and Technology)
Li, Qiu-Sheng (Department of Architecture and Civil Engineering, City University of Hong Kong)
Publication Information
Wind and Structures / v.23, no.5, 2016 , pp. 385-403 More about this Journal
Abstract
The across-wind dynamic loads on L-shaped tall buildings with various geometric dimensions were investigated through a series of wind tunnel testing. The lift coefficients, power spectral densities and vertical correlation coefficients of the across-wind loads were analyzed and discussed in details. Taking the side ratio and terrain category as key variables, empirical formulas for estimating the across-wind dynamic loads on L-shaped tall buildings were proposed on the basis of the wind tunnel testing results. Comparisons between the predictions by the empirical formulas and the wind tunnel test results were made to verify the accuracy and applicability of the proposed formulas. Moreover, a simplified procedure to evaluate the across-wind dynamic loads on L-shaped tall buildings was derived from the proposed formulas. This study aims to provide a simple and reliable way for the estimation of across-wind dynamic loads on L-shaped tall buildings.
Keywords
tall buildings; wind tunnel testing; across-wind load; lift coefficient; power spectral density;
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Times Cited By KSCI : 4  (Citation Analysis)
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1 Cheng, L., Lam, K.M. and Wong, S.Y. (2015), "POD analysis of crosswind forces on a tall building with square and H-shaped cross sections", Wind Struct., 21(1), 63-84.   DOI
2 Choi, H and Kanda, J. (1993), "Proposed formula for the power spectral densities of fluctuating lift and torque on rectangular 3-D cylinders", J. Wind Eng. Ind. Aerod., 42-47, 507-516.
3 Davenport, A.G. (1961), "The application of statistical concepts to the wind loading of structure", Proceedings of Institution of Civil Engineering., 19, 449-472.   DOI
4 Davenport, A.G. (1967), "Gust loading factors", J. Struct. Div. - ASCE, 93(3), 11-34.
5 GB50009-2012. (2012), Load Code for the Design of Building Structures. China Architecture & Building Press, Beijing.
6 Gu, M. and Quan, Y. (2004), "Across-wind loads of typical tall buildings", J. Wind Eng. Ind. Aerod., 92, 1147-1165.   DOI
7 Gu, M., Cao, H.L. and Quan, Y. (2014), "Experimental study of across-wind aerodynamic damping of super high-rise buildings with aerodynamically modified square cross-sections", Struct. Des. Tall Spec. Build., 23, 1225-1245.   DOI
8 Ha, Y.C. (2013), "Empirical formulations for evaluation of across-wind dynamic loads on rectangular tall buildings", Wind Struct., 16(6), 603-616.   DOI
9 Isyumov, N., Ho, E. and Case, P. (2014), "Influence of wind directionality on wind loads and responses", J. Wind Eng. Ind. Aerod., 133, 169-180.   DOI
10 Kareem, A. (1982), "Across wind response of buildings", J. Struct. Div. - ASCE., 108(4), 869-887.
11 Kim, Y.C. and Kanda, J. (2013), "Wind pressures on tapered and set-back tall buildings", J. Fluid. Struct., 39, 306-321.   DOI
12 Kim, Y.M., You, K.P. and Ko, N.H. (2008), "Across-wind responses of an aeroelastic tapered tall building", J. Wind Eng. Ind. Aerod., 96, 1307-1319.   DOI
13 Lam, K.M., Wong, S.Y. and To, A.P. (2009), "Dynamic wind loading of H-shaped tall buildings", Proceedings of the Seventh Asia Pacific Conference, Taipei, Taiwan.
14 Liang, S.G., Liu, S.C., Q.S. L., Zhang, L.L. and Gu, M. (2002), "Mathematic model of acrosswind dynamic loads on rectangular tall buildings", J. Wind Eng. Ind. Aerod., 90, 1757-1770.   DOI
15 Lin, N., Letchford, C., Tamura, Y., Liang, B. and Nakamura, O. (2005), "Characteristics of wind forces acting on tall buildings", J. Wind Eng. Ind. Aerod., 93(3), 217-242.   DOI
16 Marukawa, H., Ohkuma, T. and Momomura, Y. (1992), "Across wind and torsional acceleration of prismatic high rise buildings", J. Wind Eng. Ind. Aerod., 42(1-3), 1139-1150.   DOI
17 Mukherjee, S., Chakraborty, S., Dalui, S.K. and Ahuja, A.K. (2014), "Wind induced pressure on 'Y' plan shape tall building", Wind Struct., 19(5), 523-540.   DOI
18 Saunders, J.W. and Melbourne, W.H. (1975), "Tall rectangular building response to cross-wind excitation", Proceedings of the 4th International Conference on Wind Effects on Buildings and Structures, London, September.
19 Solari, G. (1985), "Mathematical model to predict 3-D loading on buildings", J. Eng. Mech. - ASCE, 111(2), 254-275.   DOI
20 Tamura, Y., Kawai, Y., Uematsu, Y., Marukawa, H., Fujii, K. and Taniike, Y. (1996), "Wind load and wind-induced response estimations in the Recommendations for Loads on Buildings, AIJ 1993", Eng. Struct., 18(6), 399-411.   DOI
21 Tang, Y. (2006), "Research on the wind excited vibrations and static-equivalent wind loads of torsionally coupled high-rise buildings", Ph.D. Dissertation, Tongji University, Shanghai.
22 Vickery, B.J and Clark, A.W. (1972), "Lift or across-wind response of tapered stacks", J. Struct. Div. - ASCE, 1, 1-20.
23 Xu, Z.D. and Xie, J.M. (2015), "Assessment of across-wind responses for aerodynamic optimization of tall buildings", Wind Struct., 21(5), 505-521.   DOI