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Constraining paleo PGA values by numerical analysis of overturned columns
Author(s) -
YagodaBiran Gony,
Hatzor Yossef H.
Publication year - 2009
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.950
Subject(s) - column (typography) , acceleration , geology , discrete element method , window (computing) , deformation (meteorology) , computer science , algorithm , structural engineering , engineering , mechanics , physics , oceanography , classical mechanics , connection (principal bundle) , operating system
The estimated peak ground acceleration (PGA) for a specific region cannot always be determined reliably from compilation and statistical analyses of instrumental data acquired because of the relatively short time window available for such an approach, typically up to 100 years of instrumentation. We propose a complimentary approach for estimating PGA in a specific region, through back analysis of seismically driven column collapse in historic monuments, using the numerical discrete element discontinuous deformation analysis (DDA) method. Preliminary threshold ‘paleo PGA’ values thus obtained constrain the lower bound of PGA estimates using information from a much broader time window, in the case study presented here of approximately 1200 years. Copyright © 2009 John Wiley & Sons, Ltd.