| The industrial accident resulted from the failure of bolt | 2021.06.22 | ||
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저자: H.W. Yeo, J.M. Lee, S.W. Choi (원문 바로가기) ABSTRACT This study was to perform an investigation of the cause of industrial accident, the cause of failure of anchor bolt to collapse a steel frame structure on a construction site for two workers on the steel frame structure to fall down and die. Through the investigation of the accident site, the process of accident and the situation of accident site were evaluated. The finite element analysis on the steel frame structure was used for an analysis, and the occurrence process of accident and the circumstances of accident site when the accident occurred were applied as analytic conditions. According to the investigation of accident site and the finite element analysis, it is evaluated that the asymmetric load by the weight of steel frame structure and the external load under insufficient fixture and support of steel frame structure led the failure of anchor bolt to cause the collapse of steel frame structure. Also, it is confirmed that two anchor bolts at the back side to receive the tensile stress among anchor bolts installed at the pillar on the opposite of external force were broken in the first place to lead the collapse of steel frame structure by the feature of anchor bolt failure evaluated through the Von Mises stress distribution. |
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