Title:
Nonlinear Modeling Parameters of Reinforced Concrete Coupling Beams
Author(s):
Tae-Sung Eom, Seung-Jae Lee, Su-Min Kang, and Hong-Gun Park
Publication:
Structural Journal
Volume:
119
Issue:
2
Appears on pages(s):
89-101
Keywords:
coupled wall; coupling beam; effective stiffness; modeling parameters; nonlinear modeling
DOI:
10.14359/51734139
Date:
3/1/2022
Abstract:
The present study investigated nonlinear modeling parameters for reinforced concrete coupling beams. Based on a review of the existing test results of 79 coupling beams, modeling parameters of varying aspect ratios and transverse reinforcement ratios were proposed. First, the effective stiffness and yield deformation were formulated as functions of aspect ratio. Second, the deformation capacity varying with reinforcement details was examined, and its design equation was defined as a function of transverse reinforcement ratio. Third, the energy dissipation ratio to define hysteresis loop under cyclic loading was suggested as a function of aspect ratio and reinforcement details. For verification, the modeling results of load-deformation relations were compared with the existing test results. The predicted load-deformation relations
showed good agreement with the test results. Finally, practical applications to computer modeling are discussed.