The effects of rigid content of response on modal response combination are studied. The rigid response coefficients are calculated for 40 earthquakes and four damping ratios. The modal response is evaluated for a range of frequencies from damped periodic to rigid. The presence of rigid content in the modal responses having frequency less than rigid frequency is investigated. The related key frequencies and rigid frequency are studied. It is found that the rigid content of the response and the related key frequencies are functions of the damping ratio and found to be different from those proposed in the earlier studies. New simplified formulations are proposed for determining the rigid response coefficient for the combination of modal responses.
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June 2012
Research Article|
June 01 2012
Effect of rigid content on modal response combination Available to Purchase
Meera K. Dhileep, ME BTech, MIndACM, MIASE;
Meera K. Dhileep, ME BTech, MIndACM, MIASE
Assistant Professor
Department of Civil Engineering, SCMS School of Engineering and Technology, Ernakulum, India
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Sopna S. Nair, MTech, BTech
Sopna S. Nair, MTech, BTech
Structural Engineer
Pfeifer, Abu Dhabi, United Arab Emirates
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Publisher: Emerald Publishing
Revision Received:
March 10 2010
Accepted:
March 17 2011
Online ISSN: 1751-7702
Print ISSN: 0965-0911
ICE Publishing: All rights reserved
2012
Proceedings of the Institution of Civil Engineers - Structures and Buildings (2012) 165 (6): 287–297.
Article history
Revision Received:
March 10 2010
Accepted:
March 17 2011
Citation
Dhileep MK, Nair SS (2012), "Effect of rigid content on modal response combination". Proceedings of the Institution of Civil Engineers - Structures and Buildings, Vol. 165 No. 6 pp. 287–297, doi: https://doi.org/10.1680/stbu.10.00024
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