Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Analysis of Allowable Strength of Reused Vertical Members of System Scaffolds and System Supports

재사용 시스템비계와 시스템동바리 수직재의 허용강도 분석

  • Park, Jin-Suk (HSE Management Team, DAEWOO ENGINEERING & CONSTRUCTION) ;
  • Ko, Sang Seom (Department of Safety Engineering, Chungbuk National University) ;
  • Won, Jeong-Hun (Department of Safety Engineering / Department of Disaster Prevention Engineering & Department of Big Data, Chungbuk National University)
  • Received : 2021.01.22
  • Accepted : 2021.08.02
  • Published : 2021.08.31
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Abstract

The allowable strength based on experiments and the design allowable strength calculated using the design criteria were compared, which suggested a ratio between the allowable strengths for the reused vertical members of the system scaffolding and system support. By investigating a total of 421 certification reports for reused vertical members, the experimental allowable strengths were collected. Using design criteria such as the road bridge design and KDS 14 30 10, the design allowable strengths were calculated for various slenderness ratios. For the system scaffolding, the average ratio between the experimental and design allowable strengths was calculated to be 0.880 by assuming a normal distribution for all specimens. However, by analyzing the strength ratio according to the slenderness ratio, the lowest average strength ratio was found to be at least 0.844. Therefore, it is reasonable to assume that the allowable strength of the reused vertical members was 80-84% of the design allowable strength. In addition, assuming the allowable strength to be 85% of the design allowable strength is a possible method for reused vertical members of system supports.

Keywords

Acknowledgement

This paper was partially supported by Ministry of the Interior and Safety as "Human resource development Project in Disaster management".

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