Journal of the Korean Society of Mechanical Technology (한국기계기술학회지)

Korean Society of Mechanical Technology (한국기계기술학회)
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Structural Safety Evaluation of PBD Composite Perforator's Leader for Soft Ground Improvement

연약지반 개량 PBD 복합천공기 리더의 구조 안전성 평가

  • Received : 2018.11.30
  • Accepted : 2018.12.27
  • Published : 2018.12.28
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Abstract

Among the soft ground improvement methods, PBD is the most common construction method because it is cheap and construction is fast. However, if the ground is rigid, additional work is required. In this study, the structural safety, natural vibration, and safety angle of the steel vertical tower structure were evaluated in the development of the PBD composite perforator which can be combined with drilling work and PBD construction. Structural safety was assessed when the wind load of 20 m/s was simultaneously applied to the PBD construction load of 20 tons, the perforating operation of 25 tons, and the wind speed of 50 m/s was applied only to the wind load. The natural frequencies were evaluated up to the sixth mode, and the safety angle was evaluated for static and dynamic safety angles.

Keywords

References

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  1. 협소 공간 절삭가공용 앵글 헤드 스핀들 케이스 소형화에 대한 연구 vol.18, pp.6, 2018, https://doi.org/10.14775/ksmpe.2019.18.6.098