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Earthquakes and Structures
  Volume 7, Number 5, November 2014, pages 817-842

Nonlinear modeling parameters of RC coupling beams in a coupled wall system
Seongwoo Gwon, Myoungsu Shin, Benjamin Pimentel and Deokjung Lee

    ASCE/SEI 41-13 provides modeling parameters and numerical acceptance criteria for various types of members that are useful for evaluating the seismic performance of reinforced concrete (RC) building structures. To accurately evaluate the global performance of a coupled wall system, it is crucial to first properly define the component behaviors (i.e., force-displacement relationships of shear walls and coupling beams). However, only a few studies have investigated on the modeling of RC coupling beams subjected to earthquake loading to date. The main objective of this study is to assess the reliability of ASCE 41-13 modeling parameters specified for RC coupling beams with various design details, based on a database compiling almost all coupling beam tests available worldwide. Several recently developed coupling beam models are also reviewed. Finally, a rational method is proposed for determining the chord yield rotation of RC coupling beams.
Key Words
    ASCE/SEI 41-13; modeling parameters; coupling beam; chord yield rotation
Seongwoo Gwon and Myoungsu Shin: School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Korea

Benjamin Pimentel: Rosenwasser Grossman Consulting Engineers, 485 Seventh Avenue, New York, NY, USA

Deokjung Lee: Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology (UNIST),
Ulsan, Korea

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