An Experimental Study on the Stiffness Change of Scaffold Working Plate caused by Damage of Cross-beam 


Vol. 36,  No. 5, pp. 27-35, Oct.  2021
10.14346/JKOSOS.2021.36.5.27


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  Abstract

This study investigated the change in stiffness and deflection of a scaffold working plate caused by damage to a cross-beam in the plate. Experiments were conducted considering various load and damage conditions of cross-beams. A cross-beam falling off from the working plate was considered damaged. The load– displacement curves of specimens at the center of the uniform load showed that the working plate stiffness decreased by 14.66%–1.89%, depending on the load interval due to the damage of one cross-beam. A reduction in the stiffness of 33.94%–40.76% resulted from the damage of two cross-beams. Moreover, the displacement increased by an average of 25% when one cross-beam was damaged and an average of 65% when two cross-beams were damaged. Therefore, damage to the cross-beam in the working plate can potentially cause accidents and harm workers. As the load increases, the risk of an accident due to the aforementioned damage also increases because the stiffness remarkably decreases with the load increase. Further, the damage to the cross-beam mainly reduces the stiffness but increases the displacement rather than the strength of the working scaffold plate.

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  Cite this article

[IEEE Style]

성용원, 강민국, 원정훈, "An Experimental Study on the Stiffness Change of Scaffold Working Plate caused by Damage of Cross-beam," Journal of the Korean Society of Safety, vol. 36, no. 5, pp. 27-35, 2021. DOI: 10.14346/JKOSOS.2021.36.5.27.

[ACM Style]

성용원, 강민국, and 원정훈. 2021. An Experimental Study on the Stiffness Change of Scaffold Working Plate caused by Damage of Cross-beam. Journal of the Korean Society of Safety, 36, 5, (2021), 27-35. DOI: 10.14346/JKOSOS.2021.36.5.27.

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