International journal of steel structures (국제강구조저널)

Korean Society of Steel Construction (한국강구조학회)
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Distribution of Optimum Yield-Strength and Plastic Strain Energy Prediction of Hysteretic Dampers in Coupled Shear Wall Buildings

  • Bagheri, Bahador (Department of Architectural Engineering, Pusan National University) ;
  • Oh, Sang-Hoon (Department of Architectural Engineering, Pusan National University) ;
  • Shin, Seung-Hoon (Department of Architectural Engineering, Pusan National University)
  • Received : 2017.12.14
  • Accepted : 2018.04.26
  • Published : 2018.11.30
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Abstract

The structural behavior of reinforced concrete coupled shear wall structures is greatly influenced by the behavior of their coupling beams. This paper presents a process of the seismic analysis of reinforced concrete coupled shear wall-frame system linked by hysteretic dampers at each floor. The hysteretic dampers are located at the middle portion of the linked beams which most of the inelastic damage would be concentrated. This study concerned particularly with wall-frame structures that do not twist. The proposed method, which is based on the energy equilibrium method, offers an important design method by the result of increasing energy dissipation capacity and reducing damage to the wall's base. The optimum distribution of yield shear force coefficients is to evenly distribute the damage at dampers over the structural height based on the cumulative plastic deformation ratio of the dissipation device. Nonlinear dynamic analysis indicates that, with a proper set of damping parameters, the wall's dynamic responses can be well controlled. Finally, based on the total plastic strain energy and its trend through the height of the buildings, a prediction equation is suggested.

Keywords

Acknowledgement

Supported by : Pusan National University

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