Steel and Composite Structures
Volume 37, Number 4, 2020, pages 447-462
DOI: 10.12989/scs.2020.37.4.447
A simplified seismic design method for low-rise dual frame-steel plate shear wall structures
Jiulin Bai , Jianyuan Zhang , Ke Du , Shuangshuang Jin
Abstract
In this paper, a simplified seismic design method for low-rise dual frame-steel plate shear wall (SPSW) structures is proposed in the framework of performance-based seismic design. The dynamic response of a low-rise structure is mainly dominated by the first-mode and the structural system can be simplified to an equivalent single degree-of-freedom (SDOF) oscillator. The dual frame-SPSW structure was decomposed into a frame system and a SPSW system and they were simplified to an equivalent F-SDOF (SDOF for frame) oscillator and an equivalent S-SDOF (SDOF for SPSW) oscillator, respectively. The analytical models of F-SDOF and S-SDOF oscillators were constructed based on the OpenSees platform. The equivalent SDOF oscillator (D-SDOF, dual SDOF) for the frame-SPSW system was developed by combining the F-SDOF and S-SDOF oscillators in parallel. By employing the lateral force resistance coefficients and seismic demands of D-SDOF oscillator, the design approach of SPSW systems was developed. A 7-story frame-SPSW system was adopted to verify the feasibility and demonstrate the design process of the simplified method. The results also show the seismic demands derived by the equivalent dual SDOF oscillator have a good consistence with that by the frame-SPSW structure.
Key Words
steel plate shear wall; SDOF oscillator; dual structural system; performance-based seismic design; seismic demand
Address
- Jiulin Bai and Jianyuan Zhang — School of Civil Engineering, Chongqing University, Chongqing, 400045, China; Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, China
- Ke Du — Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
- Shuangshuang Jin — School of Civil Engineering, Chongqing Jiaotong University, 400074, Chongqing, China
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