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Assessing the collapse probability of base-isolated buildings considering pounding to moat walls using the FEMA P695 methodology

Armin Masroor and Gilberto Mosqueda
Assessing the collapse probability of base-isolated buildings considering pounding to moat walls using the FEMA P695 methodology
Earthquake Spectra (November 2015) 31 (4): 2069-2086

Abstract

The collapse probability of two three story base-isolated buildings considering pounding to moat walls is examined using the methodology in FEMA P695. The superstructure models consist of a steel intermediate moment frame and a steel ordinary braced frame designed for the same seismic hazard. The behavior of these buildings under various ground motions is first examined, and it is found that the more rigid braced frame results in larger displacements demands on the isolation system, increasing the potential for impact. The collapse studies examine the effect of moat wall gap distance on the probability of collapse for these structures. These studies show that the flexibility and ductility of the moment frame model allow the superstructure to better absorb the impact forces. The braced frame superstructure tends to impact at lower shaking intensities and degrades in strength more rapidly due to the limited ductility that increases the risk of collapse.


ISSN: 8755-2930
EISSN: 1944-8201
Serial Title: Earthquake Spectra
Serial Volume: 31
Serial Issue: 4
Title: Assessing the collapse probability of base-isolated buildings considering pounding to moat walls using the FEMA P695 methodology
Affiliation: Arup, Advanced Technology and Research, San Francisco, CA, United States
Pages: 2069-2086
Published: 201511
Text Language: English
Publisher: Earthquake Engineering Research Institute, Berkeley, CA, United States
References: 18
Accession Number: 2021-009775
Categories: SeismologyEngineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
Secondary Affiliation: University of California San Diego, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2021, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 202103
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