Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Development and Application of Lattice Shear Reinforcement for Flat Plate Slab-column Connection

래티스를 이용한 철근콘크리트 무량판 구조의 슬래브-기둥 접합부 전단보강 공법 개발

  • Kang, Su-Min (Department of Architectural Engineering & Research Team, DAELIM Industrial Co., Ltd.) ;
  • Park, Sung-Woo (Department of Architectural Engineering & Research Team, DAELIM Industrial Co., Ltd.) ;
  • Bang, Joong-Seok (Department of Architectural Engineering & Research Team, DAELIM Industrial Co., Ltd.) ;
  • Lee, Do-Bum (Building & Housing Business Division, DAELIM Industrial Co.) ;
  • Kwon, Chul-Hwan (Korea Infrastructure Safety and Technology Corporation) ;
  • Park, Hong-Gun (Department of Architecture and Architectural Engineering, Seoul National University)
  • Received : 2013.05.07
  • Accepted : 2013.06.04
  • Published : 2013.10.20
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Abstract

Although the flat plate system is an efficient structural type due to the simplicity of its construction, the low story height, and the various plan design, the slab-column connections are vulnerable to punching shear failure from gravity load and eccentric shear failure from lateral load. To prevent the structure collapse, various construction methods of slab-column connection reinforcement are developed but none of these satisfies all of structural performance, economics, and constructability. This paper presents the reinforcement of slab-column connection with lattice bars. The structural performance is confirmed with the interior slab-column connection tests subjected to cyclic loading, and the economic feasibility is demonstrated from the structural design under the same condition with lattice bars, stud rails, and stirrups.

무량판 슬래브 구조는 시공의 단순함과 낮은 층고, 그리고 다양한 평면구성의 용이함으로 인하여 구조적으로 효과적이나 슬래브-기둥 접합부가 중력하중에 의한 펀칭전단파괴와 횡하중의 불균형모멘트에 의한 편심전단파괴에 취약한 단점이 있다. 이러한 무량판 슬래브의 취약점을 방지하기 위하여 많은 보강공법들이 개발되었으나, 보강공법들은 구조적 성능과 경제성, 그리고 시공성을 모두 만족시키기지는 못하고 있다. 이 논문에서는 래티스를 이용한 무량판 구조의 슬래브-기둥 접합부 보강공법을 제시하였다. 주기하중 실험을 통하여 래티스 보강공법의 구조적 성능을 증명하였으며 같은 구조설계 조건에 대하여 스터럽과 스터드레일, 그리고 래티스를 이용한 공법을 적용해 봄으로써 경제성을 입증하였다.

Keywords

References

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