Dynamic Analyses of Isolated Structures under Bi-Directional Excitations of Near-Field Ground Motions
Author(s) -
Gökhan Özdemir,
Uğurhan Akyüz
Publication year - 2012
Publication title -
shock and vibration
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 45
eISSN - 1875-9203
pISSN - 1070-9622
DOI - 10.1155/2012/382708
Subject(s) - isolator , structural engineering , nonlinear system , yield (engineering) , field (mathematics) , range (aeronautics) , engineering , geotechnical engineering , geology , physics , materials science , mathematics , electronic engineering , composite material , quantum mechanics , pure mathematics , aerospace engineering
Nonlinear response history analyses (NRHA) of a 3-story isolated reinforced concrete (RC) building are carried out under both uni- and bi-directional earthquake excitations of near-field records. NRHA are conducted for a wide range of yield strength ( Q/W ) of lead rubber bearings (LRB), and isolation period ( T ). Selected near-field records are used to investigate both the contribution of orthogonal components on maximum isolator displacements and accuracy of equivalent lateral force (ELF) procedure on estimation of maximum isolator displacements. Analyses results show that both the contribution of orthogonal components and accuracy of ELF procedure depend on the soil condition where isolation system is implemented.
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