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Use of rotational friction dampers to enhance seismic and progressive collapse resisting capacity of structures
Author(s) -
Kim J.,
Choi H.,
Min KW.
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.563
Subject(s) - damper , dissipation , structural engineering , seismic loading , progressive collapse , nonlinear system , dynamic load testing , engineering , seismic analysis , reinforced concrete , physics , quantum mechanics , thermodynamics
Passive energy dissipation devices are generally used to reduce structural responses caused by earthquake or wind loads. This study presents combined system of rotational friction dampers connected to high strength tendons to enhance both seismic and progressive collapse‐resisting capacity of existing structures. Friction dampers were designed using the capacity spectrum method to satisfy given performance objectives against seismic load, and their seismic‐ and progressive collapse‐resisting capacities were investigated. According to the nonlinear dynamic analysis results, the structures retrofitted with rotational friction dampers generally satisfied the given performance objectives against seismic load. Both the nonlinear static and dynamic analysis results showed that the progressive collapse potential of the model structures was significantly enhanced as a result of the seismic retrofit. Copyright © 2009 John Wiley & Sons, Ltd.