Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Structural Performance of the Modular System with Fully Restrained Moment Connections using Ceiling Bracket

천장 브래킷을 이용한 완전강접합 모듈러 시스템의 구조성능

  • 이승재 (한국기술교육대학교 디자인.건축공학부) ;
  • 곽의신 (한국기술교육대학교 창의융합공학협동과정) ;
  • 박재성 (한국기술교육대학교 창의융합공학협동과정) ;
  • 강창훈 (현대엔지니어링(주) 건축구조설계팀) ;
  • 손수덕 (한국기술교육대학교 디자인.건축공학부)
  • Received : 2017.09.01
  • Accepted : 2017.10.19
  • Published : 2017.12.26
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Abstract

Due to structural characteristics, construction costs and duration of a modular system would be saved by minimizing the schedule on the job site. As such, it is crucial to develop a connection that can guarantee stiffness while allowing for simple assembling. Particularly, the mid- to high-rise construction of the modular system necessitates the securing of the structural stability and seismic performance of multi-unit frames and connections, and thus, the stiffness of unit-assembled structures needs to be re-evaluated and designed. However, evaluating a frame consisting of slender members and reinforcing materials is a complicated process. Therefore, the present study aims to examine the structural characteristics of a modular unit connection based a method for reinforcing connection brackets and hinges while minimizing the loss of the cross section. Toward this end, the study modeled the beam-to-column connection of a modular system with the proposed connection, and produced a specimen which was used to perform a cycling loading test. The study compared the initial stiffness, the attributes of the hysteretic behavior, and the maximum flexural moment, and observed whether the model acquired the seismic performance, compared to the flexural strength of the steel moment frame connection that is required by the Korean Building Code. The test results showed that the proposed connection produced a similar initial stiffness value to that of the theoretical equation, and its maximum strength exceeded the theoretical strength. Furthermore, the model with a larger ceiling bracket showed higher seismic performance, which was further increased by the reinforcement of the plate.

Keywords

Acknowledgement

Supported by : 한국연구재단, 한국기술교육대학교

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