A REDUCED METHOD FOR SOLVING THE DYNAMIC LATERALTORSIONAL COUPLING IN TALL BUILDINGS
Publish Year: 1382
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
SEE04_BS25
تاریخ نمایه سازی: 10 آبان 1384
Abstract:
In this article, simple models are developed to solve the lateral-torsional response interaction problem for uniformly and non-uniformly eccentric buildings. For non-uniformly eccentric buildings, three D.O.F.s are considered for each floor and for the uniformly eccentric buildings one D.O.F. is considered for each floor plus three D.O.F.s for the whole building rendering in both models much smaller number of D.O.F.s compared with the general 3-D solution. Using these models, a number of problems are solved and results are checked against the general solutions and experimental results with favourable conclusions. A parametric study is then undertaken to investigate some parameters influencing the level of interaction including; the ratio of uncoupled torsional and lateral frequencies, the ratio of uncoupled lateral frequencies in x and y directions and the level of damping. It is noted, amongst other notions, that coupling reduces with increasing damping but will have a profound effect on the response when eccentricity is large.
Authors
M. R. Maheri
Associate Professor, Department of Civil Eng. Shiraz University, Iran
A. Kordi
Instructor, Department of Civil Eng. Sistan-Baluchestan University, Iran
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