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Effect of Horizontal Connection and Slope on Buckling Characteristics of Single Pipe

단관 파이프의 좌굴특성에 대한 수평연결재 및 기울기의 영향

  • Lee, Jin Seop (Department of Safety Engineering, Incheon National University) ;
  • Lee, Yeon Su (Department of Safety Engineering, Incheon National University) ;
  • Oh, Tae Keun (Department of Safety Engineering, Incheon National University)
  • 이진섭 (인천대학교 안전공학과) ;
  • 이연수 (인천대학교 안전공학과) ;
  • 오태근 (인천대학교 안전공학과)
  • Received : 2015.02.06
  • Accepted : 2015.03.20
  • Published : 2015.04.30

Abstract

The number of collapse accidents relevant to form support since 2003 is 30 on the basis of statistical data from Ministry of Employment and Labor,. Total number of casualty was 138 (47 for deaths and 91 for injuries). The accident severity rate was high because the 4.6 casualties per one accident were occurred averagely although the incident rate was relatively low. Especially, one of form support members, the pipe supports have not been equipped adequately so that the accidents could have happened. In this regard, this study performed buckling test related to the effect of horizontal connection and slope in the single pipe which is one of typical pipe supports. The buckling load, which was estimated from the single pipe with the horizontal connectors theoretically and experimentally, was increased as more than 2 times compared to the buckling load obtained from the pipe supports without the connector. The buckling load was reduced as more than 26%, 34% slope of the single pipe comparing with 5% and 10% slope, respectively. Thus, the purpose of this study is to provide the guideline for installation and the maintenance of the pipe supports legally and institutionally to prevent the collapse accidents of the pipe supports.

Keywords

single pipe;pipe support;collapse accident;horizontal connection;slope;temporary structure

Acknowledgement

Supported by : 소방방재청

References

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