International journal of steel structures (국제강구조저널)

Korean Society of Steel Construction (한국강구조학회)
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MOGA-Based Structural Design Method for Diagrid Structural Control System Subjected to Wind and Earthquake Loads

  • Kim, Hyun-Su (Division of Architecture, Architectural and Civil Engineering, Sunmoon University) ;
  • Kang, Joo-Won (School of Architecture, Yeungnam University)
  • Received : 2017.06.16
  • Accepted : 2018.03.29
  • Published : 2018.12.31
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Abstract

An integrated optimal structural design method for a diagrid structure and control device was developed. A multi-objective genetic algorithm was used and a 60-story diagrid building structure was developed as an example structure. Artificial wind and earthquake loads were generated to assess the wind-induced and seismic responses. A smart tuned mass damper (TMD) was used as a structural control system and an MR (magnetorheological) damper was employed to develop a smart TMD (STMD). The multi-objective genetic algorithm used five objectives including a reduction of the dynamic responses, additional stiffness and damping, mass of STMD, capacity of the MR damper for the integrated optimization of a diagrid structure and a STMD. From the proposed method, integrated optimal designs for the diagrid structure and STMD were obtained. The numerical simulation also showed that the STMD provided good control performance for reducing the wind-induced and seismic responses of a tall diagrid building structure.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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  1. Structural Properties of Tall Diagrid Buildings Using a Neural Dynamic Model for Design Optimization vol.148, pp.3, 2018, https://doi.org/10.1061/(asce)st.1943-541x.0003271