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Response spectrum method for multi‐support seismic excitations
Author(s) -
Kiureghian Armen Der,
Neuenhofer Ansgar
Publication year - 1992
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290210805
Subject(s) - vibration , response spectrum , ground motion , random vibration , spectrum (functional analysis) , structural engineering , variation (astronomy) , motion (physics) , geology , statistical physics , physics , engineering , acoustics , classical mechanics , quantum mechanics , astrophysics
A new response spectrum method is developed for seismic analysis of linear multi‐degree‐of‐freedom, multiply supported structures subjected to spatially varying ground motions. Variations of the ground motion due to wave passage, loss of coherency with distance and variation of local soil conditions are included. The method is based on fundamental principles of random vibration theory and properly accounts for the effects of correlation between the support motions as well as between the modes of vibration of the structure.