• Title/Summary/Keyword: Removable Deck Plate

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Structure and Construction Technology Analysis about Construction Sequence Change for Superstructure Construction Period Reduction in Top-down Method (역타공법 중심의 골조 공기단축을 위한 시공시퀀스 변경에 따른 구조해석 및 요소기술 분석)

  • Park, Yong-Hyeon;Ju, Young-Kyu
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.35 no.6
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    • pp.101-109
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    • 2019
  • The purpose of this study is to improve a general Top-Down construction process for superstructure construction period reduction. In a general Top-Down construction sequence, the ground floor slab is set up first. Subsequently, 1st basement level construction including core walls is constructed. Initiation of the ground level superstructure gets waited until then. In this study, removable deck plate installation on the bottom of the core walls of ground level is preceding the concrete casting, therefore, ground level superstructure construction is able to get started earlier. Up to first typical floor concrete casting, total of seventy-two working(calendar) days will be resulted in a reduction from the total construction periods.

Development of Removable Deck Plate Formwork System for Beams (데크플레이트를 활용한 탈형 보-데크 거푸집 시스템 개발)

  • Jung, Joo-Hong;Jung, Hyung-Suk;Choi, Chang-Sik;Choi, Hyun-Ki
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.25 no.6
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    • pp.60-67
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    • 2021
  • In lately, it's been developed and used a system of using deck plates as formwork in order to solve various problems caused by conventional formwork system. This system is more economical and has higher constructability than the conventional system by permanently embedding most of deck plates into the members. However, for this kind of embedded deck plates formwork system, it's been reported that it is difficult to verify filling of concrete in members like beams with narrow width and complicated rebar arrangement. In addtion, there are several problems such as corrosion of deck plates in terms of constructability and maintenance. Therefore, in this study, it is attempted to develop a removal-deck plate formwork system for beams by removing deck plates after concrete curing. The system consists of a deck plate module that acts as form, a frame preventing deformation by concrete lateral pressure, stirrup frame, and connector that combines these. As a result of this research, it is verified that it has higher constructability, efficiently prevents deformation caused by concrete lateral pressure and could be easily removed in the developed formwork system.