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Response of wind‐excited benchmark building installed with dampers
Author(s) -
Patil V. B.,
Jangid R. S.
Publication year - 2011
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.523
Subject(s) - damper , controllability , structural engineering , control theory (sociology) , parametric statistics , benchmark (surveying) , engineering , mathematics , computer science , geology , statistics , control (management) , geodesy , artificial intelligence
The response of the benchmark building is investigated under across‐wind loads. The governing equations of motion are solved by employing state space theory. Generally, the dampers are connected to successive floors of a building (Type‐I arrangement). As the relative velocity and inter‐storey drift between the alternate floors would be larger, the performance of dampers is studied by connecting them to alternate stories with two innovative (Type‐II and Type‐III) arrangements, and the comparison of response is made with that of the conventional (Type‐I) arrangement. Optimization of location and number of dampers is also carried out with the help of a controllability index, which is obtained with the help of root‐mean‐square value of the inter‐storey drift. Further, a parametric study of semi‐active variable friction dampers and linear viscous dampers by varying gain multiplier and damping ratio, respectively, is carried out. From the numerical study, it is observed that Type‐II and Type‐III arrangements are found to be quite effective in reducing the response quantities. It is also found that a considerable amount of economy is achieved by optimization of location of dampers. Copyright © 2009 John Wiley & Sons, Ltd.