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Steel Frame Clamp Deformation and Performance Check based on Clamping Orientation

철골용 클램프 시공방향에 따른 변형 및 성능확인

  • Mo, Seung-Un (Department of Architectural Engineering, TongMyong University) ;
  • Lim, Nam-Gi (Department of Architectural Engineering, TongMyong University)
  • Received : 2022.03.23
  • Accepted : 2022.04.13
  • Published : 2022.04.20

Abstract

The government [3] specifies steel pipe scaffolding as conventional scaffolding and is promoting the installation of system scaffolding, an integrated work platform, and avoidance of the use of steel pipe scaffolding as much as possible. However, in places where equipment cannot enter, such as power plants and plant sites, places the structure is complex, and places where scaffolding cannot be stacked on the ground, there is no choice but to install steel pipe scaffolding. When installing steel pipe scaffolding on an H-beam structure at a high place, the performance of the steel frame clamp is very important in order to form a work space which workers can work safely. In this study, the displacement magnitude and tensile load of members in each installation direction of the clamp for steel frame were verified through performance tests and structural analysis modeling. As a result, it was confirmed that the performance for each installation direction satisfies the safety certification standard tensile load of 10,000N. Although the performance value is satisfactory, deformation of the attachment pressing bolt was verified and was confirmed to have minimal deformation. Thus, to ensure the load is properly to the attachment body, the clamp for a steel frame must be installed in the direction in which the load is transmitted.

정부[3]에서는 강관비계를 재래식 비계로 규정하고 일체형 작업발판인 시스템비계를 우선 설치하도록 제도화 하고 강관비계의 사용을 최대한 지양하고 있는 추세이다. 하지만 발전소, 플랜트 현장 등 장비의 진입이 안 되거나 본 구조물의 구조가 복잡한 곳, 그리고 지면에서 비계를 쌓아 올리지 못하는 곳에서는 강관비계를 설치하여 작업할 수 밖에 없다. 고소부위의 H-beam 구조물에 강관비계를 설치하여 작업자들이 안전하게 작업을 할 수 있도록 작업공간을 형성하기 위해서는 철골용 클램프의 성능은 매우 중요한 요소이다. 본 연구에서는 철골용 클램프의 설치 방향별 부재의 변형 및 인장하중에 대해 성능시험 및 구조해석 모델링을 통해 확인한 결과 설치 방향별 성능은 안전인증 기준인 인장하중 10,000N을 만족하는 것으로 확인 되었다. 다만 성능값은 만족하지만 부착부 누름 볼트의 변형발생이 확인되었고, 부착부 본체는 변형이 미미한 것으로 확인되었으므로 철골용 클램프는 하중이 전달되는 방향으로 설치하여 부착부 본체에 하중이 제대로 전달될 수 있도록 하는 것이 보다 안전한 방법이다.

Keywords

Acknowledgement

I would like to express my sincere gratitude to President Hong Ki-cheol, the executives and staffs of the Korea Scaffolding Institute who have given their full support for completing this research, and also to Professor Lim Nam-Gi for his guidance in completing the thesis.

References

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  2. Occupational Safety and Health Act [Internet]. Sejong (Korea): Ministry of Employment and Labor. 2021 Nov 19. Available from:https://www.law.go.kr/%EB%B2%95%EB%A0%B9/%EC%82%B0%EC%97%85%EC%95%88%EC%A0%84%EB%B3%B4%EA%B1%B4%EB%B2%95
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