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Seismic response of 20-story-tall reinforced-concrete special moment-resisting frames designed with current code provisions

Tea Visnjic, Marios Panagiotou and Jack P. Moehle
Seismic response of 20-story-tall reinforced-concrete special moment-resisting frames designed with current code provisions
Earthquake Spectra (May 2015) 31 (2): 869-893

Abstract

This paper investigates the two-dimensional nonlinear seismic response of four 20-story reinforced-concrete special moment-resisting frames designed according to ASCE 7-10 and ACI 318-11 code provisions. Analytical models of the buildings are subjected to a set of ground motions scaled to the smooth design spectra for the design basis earthquake (DBE) and the maximum considered earthquake (MCE) for a site located in Los Angeles, California. Significant inelastic deformations of beams are observed at both hazard levels, but the deformations at the MCE level result in large inelastic tensile strains at the base of the columns. Current code provisions have been found to appreciably underestimate column axial forces and, depending on the procedure used, shear forces in columns as well. Beam growth effects were found to significantly contribute to the shear forces in the columns near the base. Methods for improving estimates of column axial and shear forces are presented.


ISSN: 8755-2930
EISSN: 1944-8201
Serial Title: Earthquake Spectra
Serial Volume: 31
Serial Issue: 2
Title: Seismic response of 20-story-tall reinforced-concrete special moment-resisting frames designed with current code provisions
Affiliation: University of California at Berkeley, Department of Civil and Environmental Engineering, Berkeley, CA, United States
Pages: 869-893
Published: 201505
Text Language: English
Publisher: Earthquake Engineering Research Institute, Berkeley, CA, United States
References: 38
Accession Number: 2021-009733
Categories: SeismologyEngineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
N34°00'00" - N34°00'00", W118°15'00" - W118°15'00"
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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