Research Article
Feb 1966
Vibration Tests of a Nine-Story Steel Frame Building
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VIEW THE REPLYPublication: Journal of the Engineering Mechanics Division
Volume 92, Issue 1
Abstract
A nine-story steel frame building has been subjected to an extensive ser of forced resonance tests. Seven translational and three torsional modes were investigated in detail. A mode in which the floor slabs vibrated horizontally as free-free beams was excited as well. Stiffness and damping matrices were calculated from the experimentally determined modal properties. Damping values were found to be considerably lower than those usually mentioned in the literature. The lowest translational modes in the two principal directions of the building had damping values of approximately 0.5%. The second lowest translational modes had damping values of approximately 1.0%. Damping was found to increase linearly with resonant frequencies. Consistent, but small increases in damping values were found as the amplitude was increased. The damping mechanism is well represented by relative dashpots.
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Published In
Journal of the Engineering Mechanics Division
Volume 92 • Issue 1 • February 1966
Pages: 81 - 110
Copyright
© 1966 American Society of Civil Engineers.
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Published in print: Feb 1966
Published online: Feb 3, 2021
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Authors
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N. Norby Nielson, M.ASCE
Asst. Prof. of Civ. Engrg., Univ. of Illinois, Urbana, Ill.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.