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Construction Application of a Newly Developed Form-Latticed Prefabricated Steel Reinforced Concrete Column

Form-LPSRC 기둥 개발 및 적용 연구

  • Baek, Hojin (Industrial & Environmental Project Management Group, Samsung Engineering Co., Ltd.) ;
  • Lee, Seung-Hwan (President, Sencoretech. Inc.) ;
  • Kim, Sooyoung (Department of Architecture & Architectural Engineering, Seoul National University)
  • Received : 2014.05.12
  • Accepted : 2014.07.14
  • Published : 2014.10.20

Abstract

Shortening the construction duration of structural frame work is extremely important because the work accounts for a major percentage of all cost and duration in large projects. For this reason, new construction methods to reduce the duration of structural frame work are being continuously studied and developed. A PSRC composite column, which uses steel angles instead of H-beams, has the advantages of flexural strength and ductility. Moreover, with this PSRC technique, conventional work for reinforcing bars in columns in practice can be skipped. However, one limitation exists in which the form work is still required. This research proposes a Form-LPSRC column method that is prefabricated with the column frame that includes permanent forms attached. Feasibility was examined with mock-up specimens and finally, the technique applied to real practice. Compared to the conventional SRC column method, this study demonstrated that the proposed technique has many advantages in construction duration, cost, quality, safety and environment.

골조공사는 프로젝트의 전체 공사비 및 공사기간에서 차지하는 비율에 매우 높으며, 대형 프로젝트에서 골조공사 공기단축은 프로젝트의 성패를 결정하는 중요한 요소이다. 이에 공기단축을 위한 새로운 공법에 대한 연구가 지속적으로 이루어져 오고 있다. H형강 대신 앵글을 사용하는 PSRC 합성기둥은 기존의 SRC 기둥에 비해 높은 휨강도 및 연성도를 가지며 현장에서의 철근작업을 생략할 수 있다는 장점이 있으나, 여전히 거푸집작업이 필요하다는 한계점이 있다. 본 연구는 기존의 PSRC 기둥 공법을 개선하여 영구거푸집까지 선조립하는 Form-LPSRC 기둥 공법을 개발하는 것을 목적으로 한다. Mock-up test를 통해 발생 가능한 문제점을 사전에 검토함과 동시에 현장 적용을 통해 해당 공법의 적용효과를 분석하였으며, 기존 SRC 기둥에 공기, 원가, 품질, 안전, 환경 측면에서 우수한 것으로 나타났다.

Keywords

References

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