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Numerical models of RC elements and their impacts on seismic performance assessment
Engineering and TechnologyEarthquake Engineering & Structural Dynamics

Numerical models of RC elements and their impacts on seismic performance assessment

X. Huang and O. Kwon

Xu Huang and Oh-Sung Kwon evaluate five numerical models against 320 reinforced-concrete column experiments to guide seismic performance assessment. The study reveals how model accuracy depends on the shear demand-capacity ratio, recommends explicitly capturing shear deformation and failure in short-period, shear-critical systems, and provides statistical parameters for probabilistic assessments. Discover when model choice can significantly alter predicted inelastic responses—and when its influence is limited.... show more
Abstract
This paper aims to provide a guideline for numerical modeling of reinforced concrete (RC) frame elements for seismic performance assessment. Five representative numerical models are evaluated against 320 experimental results from the PEER column database to quantify accuracy in initial stiffness, peak strength, and energy dissipation capacity. A parametric dynamic study on a cantilever RC column examines the consequence of model choice on maximum inelastic responses. Results show model accuracy is sensitive to the shear force demand-capacity ratio. For short-period, shear-critical systems, models that explicitly capture shear deformation and failure are recommended; for long-period systems, model choice has limited influence on global response. Statistical parameters of each model are presented for use in probabilistic assessments.
Publisher
Earthquake Engineering & Structural Dynamics
Published On
Oct 08, 2014
Authors
Xu Huang, Oh-Sung Kwon
Tags
reinforced concreteseismic performance assessmentnumerical modelingshear-critical systemsinelastic responseenergy dissipationprobabilistic assessment
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