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Simplified procedure for simulating spatially correlated earthquake ground motions
AbstractAn approach has been developed for the simulation of spatially correlated ground motions statistically analogous with a reference record. This procedure makes use of a discrete representation of the ground motion as a random process in terms of its frequency components and subdivides the known record into a sequence of time windows to account for its temporal variation. Ground motions, consistent with both the target auto-spectrum of the known record and a frequency-dependent coherency function, were simulated at different stations. Model diagnostic checking showed that this simplified procedure is accurate and applicable for discretely supported systems such as suspension and cable-stayed bridges, particularly when used in conjunction with seismological models to generate strong motion spatially correlated accelerograms.
Simplified procedure for simulating spatially correlated earthquake ground motions
AbstractAn approach has been developed for the simulation of spatially correlated ground motions statistically analogous with a reference record. This procedure makes use of a discrete representation of the ground motion as a random process in terms of its frequency components and subdivides the known record into a sequence of time windows to account for its temporal variation. Ground motions, consistent with both the target auto-spectrum of the known record and a frequency-dependent coherency function, were simulated at different stations. Model diagnostic checking showed that this simplified procedure is accurate and applicable for discretely supported systems such as suspension and cable-stayed bridges, particularly when used in conjunction with seismological models to generate strong motion spatially correlated accelerograms.
Simplified procedure for simulating spatially correlated earthquake ground motions
Shama, Ayman A. (author)
Engineering Structures ; 29 ; 248-258
2006-04-06
11 pages
Article (Journal)
Electronic Resource
English
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