Equivalent Modal Damping Ratios of a Composite Tube-Type Tall Building to Dynamic Wind Loading
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This article discusses computing methods of the equivalent modal damping ratio for a composite tube-type tall building. The equivalent damping ratio of a composite structure under wind-induced vibrations encompasses the combined effects from the different values of damping, mass, and stiffness of the external and internal tubes. A detailed method incorporating Rayleigh damping and the transfer matrix method is proposed for the determination of the equivalent modal damping ratio. A simplified method for engineering applications is also proposed. Results for a 40-story building are presented exemplifying the computation and relationships between the properties of the external and internal tubes.
2017 ◽
Vol 43
(4)
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pp. 1735-1745
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2013 ◽
Vol 437
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pp. 257-260
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2012 ◽
Vol 238
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pp. 648-651
2015 ◽
Vol 10
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pp. 124-138
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2012 ◽
Vol 159
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pp. 170-175