한국건축시공학회:학술대회논문집 (Proceedings of the Korean Institute of Building Construction Conference)

한국건축시공학회 (The Korean Institute of Building Construction)
권호 표지

Top-Down 공사용 원형충전강관기둥과 피어기초의 개발

Development of Connection between CFT Column and Pier Foundation for Top-Down Construction

  • 정미라 (연세대학교 건축공학과 첨단구조연구실) ;
  • 임홍철 (연세대학교 건축공학과) ;
  • 김승원 (뉴테크 구조기술사사무소) ;
  • 김동건 (뉴테크 구조기술사사무소) ;
  • 강승룡 (뉴테크 구조기술사사무소)
  • 발행 : 2009.05.23
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초록

Building foundations for Top-Down construction require a special setting, because the foundations have to be placed way before excavation for the substructure of main building, Usually, the foundation goes into the layer of rock and it is often called rock-pier foundation, Currently, a cage of steel reinforcing bars is inserted to the pre-excavated hole in the rock layer, hanging down from the wide flange steel column above. This paper presents a new method for connecting the prefounded column and the steel cage with a coupler for better connection between the two, The use of a circular Concrete Filled Tube (CFT) as a prefounded column makes it possible to have this type of connection. The details of the connection and application to a Top-Down construction site is also included in this paper.

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