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Title:Earthquake Ground Motion Simulation and Reliability Implications
Author(s):Wu, C-L.; Wen, Y.K.
Subject(s):Earthquake motions
Probabilistic performance analysis
Abstract:Seismic loads have been a dominant concern in design of buildings and structures in western United States for many years. Mid-America is a region of low to moderate seismicity, infrequent moderate to large events have occurred in the past and can occur again causing large and widespread losses due to relatively slow attenuation. For purpose of performance evaluation of structures, a phenomenological model is developed for generation of earthquake ground motions. The simulation procedure is based on the latest information of seismicity, the most recent ground motion models and simulation methods. A strong emphasis is placed on uncertainty modeling and efficiency in application to performance evaluation and reliability analysis. Site locations of special interest are Memphis TN, Carbondale IL, St. Louis MO and Santa Barbara CA, because they present U.S. cities in Mid-America and western United States of different seismicity. The soil condition of a city is approximately modeled by a generic profile. Ground motions at bedrock, however, are also generated for the Mid-America cities such that if detailed information of local soil variation is available, one can use appropriate soil amplification computer software to obtain the surface ground motions. Suites of ten ground motions are selected to be compatible with the uniform hazard response spectra of a given exceedance probability. They represent the seismic hazard from the causative faults surrounding a given site location. They also allow an accurate and efficient evaluation of structural performance and reliability. The uniform hazard ground motion suites for the three Mid-America cities are also available on the web at http://mae.ce.uiuc.edulResearchIRR-1/GMotions/Index.html.
Issue Date:2000-06
Publisher:University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Civil Engineering Studies SRS-630
Genre:Technical Report
Sponsor:National Science Foundation Grant EEC 97-01785
Date Available in IDEALS:2009-11-16

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