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CONVEX MODEL FOR SEISMIC DESIGN OF STRUCTURES—I: ANALYSIS

✍ Scribed by PANTELIDES, C. P.; TZAN, S.-R.

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
972 KB
Volume
25
Category
Article
ISSN
0098-8847

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✦ Synopsis

A convex model is used to estimate the maximum response of structural systems subjected to uncertain seismic excitations. The convex modal is based on the assumption that the energy of the excitation is bounded . A reduction factor, defined in the modal domain by dividing the results obtained from the convex model by those from the time history of the actual record, is used to calibrate the convex model. An average reduction factor is also defined by averaging a set of excitation-specific reduction factors. The average reduction factor can be used for unknown excitations with an assumed energy bound and certain common earthquake characteristics. These common characteristics can be defined either by a set of previous earthquakes in the region or by regional earthquake spectra. The convex model using the average reduction factor yields acceptable predictions of the maximum response.

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