Accurate and efficient simulation of cyclic behavior of diagonally reinforced concrete coupling beams

Sang Whan Han, Hyeyoung Koh, Chang Seok Lee

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Diagonally reinforced concrete coupling beams (DRCB) play an important role in coupled shear wall systems since these members dissipate most seismic input energy during earthquakes. For reliable seismic performance evaluation using nonlinear response history analyses, it is important to use an accurate analytical model for DRCBs. In this study, the Pinching4 model is used as a base model to simulate the cyclic behavior of DRCBs. To simulate the cyclic behavior of DRCBs using the Pinching4 model, the constituent modeling parameters for backbone curve, pinching, and cyclic deterioration in strength and stiffness should be computed. To determine the proper values of the constituent modeling parameters accurately and efficiently, this study proposes empirical equations for the modeling parameters using forward stepwise regression analyses. This study shows that the cyclic behavior of DRCBs is accurately simulated using the Pinch-ing4 model with constituent parameters calculated from the proposed empirical equations.

Original languageEnglish
Pages (from-to)361-381
Number of pages21
JournalEarthquake Spectra
Volume55
Issue number1
DOIs
StatePublished - 2019 Feb 1

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reinforced concrete
Reinforced concrete
simulation
Shear walls
modeling
Deterioration
Analytical models
Earthquakes
deterioration
Stiffness
stiffness
regression analysis
earthquakes
histories
shear
earthquake
parameter
evaluation
curves
history

Cite this

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abstract = "Diagonally reinforced concrete coupling beams (DRCB) play an important role in coupled shear wall systems since these members dissipate most seismic input energy during earthquakes. For reliable seismic performance evaluation using nonlinear response history analyses, it is important to use an accurate analytical model for DRCBs. In this study, the Pinching4 model is used as a base model to simulate the cyclic behavior of DRCBs. To simulate the cyclic behavior of DRCBs using the Pinching4 model, the constituent modeling parameters for backbone curve, pinching, and cyclic deterioration in strength and stiffness should be computed. To determine the proper values of the constituent modeling parameters accurately and efficiently, this study proposes empirical equations for the modeling parameters using forward stepwise regression analyses. This study shows that the cyclic behavior of DRCBs is accurately simulated using the Pinch-ing4 model with constituent parameters calculated from the proposed empirical equations.",
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Accurate and efficient simulation of cyclic behavior of diagonally reinforced concrete coupling beams. / Han, Sang Whan; Koh, Hyeyoung; Lee, Chang Seok.

In: Earthquake Spectra, Vol. 55, No. 1, 01.02.2019, p. 361-381.

Research output: Contribution to journalArticleResearchpeer-review

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