[논문]재사용 시스템비계와 시스템동바리 수직재의 허용강도 분석

박진석; 고상섬; 원정훈

doi:10.14346/jkosos.2021.36.4.29

재사용 시스템비계와 시스템동바리 수직재의 허용강도 분석
Analysis of Allowable Strength of Reused Vertical Members of System Scaffolds and System Supports 원문보기

한국안전학회지 = Journal of the Korean Society of Safety, v.36 no.4, 2021년, pp.29 - 36

박진석 (대우건설 안전운영팀) , 고상섬 (충북대학교 안전공학과) , 원정훈 (충북대학교 안전공학과)

Abstract ▼ AI-Helper

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.

주제어

표/그림 (20)

그림 Fig. 1. Allowable stress curve according to design code.
표 Table 1. Allowable axial compressive stress without local buckling
그림 Fig. 2. Load test for vertical members.
그림 Fig. 3. Comparison of RBDC 2010 and KDS 14 30 10 in system scaffold(STK 490).
그림 Fig. 4. Comparison of RBDC 2010 and KSDS 14 30 10 in system support(STK 500).
표 Table 2. Information of collected vertical members in test report
그림 Fig. 5. Allowable load from design code & experimental test in system scaffold.
그림 Fig. 6. Allowable load from design code & experimental test in system support.
그림 Fig. 7. Ratio of allowable experiment and design load for system scaffold.
그림 Fig. 8. Histogram for system scaffold for all specimens.
그림 Fig. 9. Histogram for system scaffold with slenderness ratio of 28.9 and 29.0.
그림 Fig. 10. Histogram for system scaffold with slenderness ratio of 57.8 and 58.1.
그림 Fig. 11. Histogram for system scaffold with slenderness ratio of 115.7 and 116.1.
표 Table 3. Average by range of the slenderness in system scaffold calculated by normal distribution
그림 Fig. 12. Ratio of allowable experiment and design load for system support.
그림 Fig. 13. Histogram for system support for all specimens.
그림 Fig. 14. Histogram for system support with slenderness ratio of 42.1 and 43.7.
그림 Fig. 15. Histogram for system support with slenderness ratio of 63.0.
표 Table 4. Average by range of the slenderness in system support calculated by normal distribution
그림 Fig. 16. Histogram for system support with slenderness ratio of 84.2 and 87.4.

참고문헌 (12)

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원문보기 상세보기
S. C. Jeong and H. K Lee, "A Study on the Survey and Improvement of Safety Certifications in Temporary Equipment and Material", Journal of the Regional Association of Architectural Institute of Korea, Vol. 18, No. 2, pp. 171-180, 2016.
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상세보기
The Board of Audit and Inspection of Korea, "Audit Reports Actual Condition of Quality Control for Construction Materials -", 2016.
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원문보기 상세보기
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원문보기 상세보기
M. K. Choi and J. K. Park, "A Experimental Study on Performance Improvement Factors of Used V4 Steel Pipe Support", J. Korean Soc. Saf., Vol. 35, No. 3, pp. 43-48, 2020.

원문보기 상세보기
Ministry of Land, Transport and Maritime Affairs, Road Bridge Design Criteria, Korea Road Traffic Association, 2010.
Korea Construction Standard Center, KDS 14 30 10 : 2019.

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