Empirical Equations for Calculating Modeling Parameters of Nonlinear Response for Diagonally Reinforced Coupling Beams

Abstract

The coupled shear wall system is widely used in high-rise buildings due to its high strength and stiffness. When lateral forces act on the coupled shear wall system, the diagonally reinforced coupling beam dissipates a large amount of energy to prevent the shear wall damaging. ASCE 41-17 is one of the most widely used performance-based design standards and has proposed a linear and nonlinear procedure. Modeling parameters of nonlinear response are proposed for structural components to simulate load-deformation response from elastic behavior to collapse. Past experimental research on diagonally reinforced coupling beams reveals that the nonlinear modeling parameters suggested in ASCE 41-17 standard do not adequately reflect the measured load-deformation response. To increase the accuracy of modeling parameters, this study proposes an empirical equation based on regression analyses using the test results of 42 diagonally reinforced coupling beam specimens.