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Seismic performance evaluation of a three-dimensional unsymmetrical reinforced concrete building

Lim, Hyun-Kyu;Kang, Jun Won;Lee, Young-Geun;Chi, Ho-Seok

  • Received : 2015.05.01
  • Accepted : 2015.11.12
  • Published : 2016.04.25

Abstract

Reinforced concrete (RC) structures require advanced analysis techniques for better estimation of their seismic responses, especially in the case of exhibiting complex three-dimensional coupling of torsional and flexural behaviors. This study focuses on validating a numerical approach for evaluating the seismic response of a three-dimensional unsymmetrical RC structure through the participation in the SMART 2013 international benchmark program. The benchmark program provides material properties, detailed drawings of the RC structure, and input ground motions for the seismic response evaluation. In this study, nonlinear constitutive models of concrete and rebar were formed and local tests were conducted to verify the constitutive models in finite element analysis. Elastic calibration of the finite element model of the SMART 2013 RC structure was performed by comparing numerical and experimental results in modal and linear time history analyses. Using the calibrated model, nonlinear earthquake analysis and seismic fragility analysis were performed to estimate the behavior and vulnerability of the RC structure with various ground motions.

Keywords

reinforced concrete structure;time history analysis;seismic vulnerability assessment;SMART 2013 benchmark program

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Acknowledgement

Supported by : Korea Institute of Nuclear Safety, Korea Institute of Energy Technology Evaluation and Planning (KETEP), Ministry of Trade, Industry & Energy (MOTIE)