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Response of multiply supported rigid plate to spatially correlated seismic excitations
Author(s) -
Hao Hong
Publication year - 1991
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.4290200903
Subject(s) - ground motion , motion (physics) , strong ground motion , geology , rotation around a fixed axis , physics , structural engineering , geodesy , seismology , classical mechanics , engineering
The ground motions produced by an earthquake at the multiple support points of large structures can differ considerably. In this study, the quasi‐static, the dynamic and the total structural responses of a multiply supported rigid plate to spatially varying multiple ground motion inputs are analysed. The results, together with those obtained by neglecting ground motion phase shifts and those by neglecting ground motion coherency losses, are compared with the corresponding structural responses to a single input. The comparisons show that the single input method overestimates translational responses and underestimates rotational responses. They also show that the responses are sometimes overestimated and sometimes underestimated by neglecting the coherency loss effects between the multiple ground motion excitations.