Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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Fatigue Performance Evaluation of High-strength Bolt Used for Marine Transport Plant Structures

해상 운송 플랜트 구조물의 고장력 볼트 피로성능 평가

  • So, Jaehyuk (Dept. of Architectural Engineering, Chungnam National University) ;
  • Oh, Keunyeong (Dept. of Architectural Engineering, Chungnam National University) ;
  • Park, Kwansik (GS offshore) ;
  • Kim, Sun woo (Dept. of Construction Engineering Education, Chungnam National University) ;
  • Lee, Kangmin (Dept. of Architectural Engineering, Chungnam National University)
  • Received : 2016.08.24
  • Accepted : 2017.01.11
  • Published : 2017.02.28
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Abstract

The offshore plant structure has been transported to the site by barge because it is hard to manufacture in site. When the structure was transported on the sea, offshore plant structures and connection were experienced repetitive submarine load. For this reason, it was known for that the axial force of high-strength bolted connection was declined. Therefore, in this study, high-strength bolted connection was evaluated the shear fatigue performance under longtime fatigue load during marine transport. The experimental variables were selected intial axial force, surface type, and bolt type because they ar important factors in the change of axial force of bolts. As a experimental results of considering various variables, the variation of axial force showed within 1%. Therefore, the high-strength bolted connection was verified structural safety under longtime fatigue load.

해양플랜트 구조물은 현장에서의 제작이 어려워 작업장에서 중 소단위의 모듈로 제작한 뒤 바지선을 이용해 현장으로 운송 후 설치 제작하는 방식이 사용되고 있다. 이 때 운송 시 발생하는 반복적인 환경하중으로 인해 구조물의 접합부에 피로하중이 작용하게 된다. 따라서 본 연구에서는 플랜트구조물의 운송과정에서 발생하는 피로하중을 적용한 고장력 볼트 접합부의 피로강도에 대한 구조적 신뢰성을 확인하고자 도입축력, 마찰계수, 볼트종류를 변수로 한 실험연구를 수행하였다. 다양한 변수를 고려한 고장력 볼트의 축력변화에 따른 볼트 풀림 현상 규명 연구결과, 고장력 볼트의 축력변화가 1% 내외에서 나타나 구조적 안전성에는 영향을 미치지 않는 것으로 판단된다.

Keywords

References

  1. Det Norske Veritas (2011) DNV Offshore Standard DNVOS-C201 Structural Design of Offshore Units.
  2. 최누리(2014) 유한요소법을 이용한 볼트-너트 조인트의 풀림 메커니즘 해석과 풀림방지너트 최적설계에 관한연구, 석사학위논문, 한국교통대학교. Choi, N.R. (2014) A study on the Self-Loosening Mechanism of Bolt-nut Joint and Optimal Design of Anti-loosening Nut Using Finite Element Method, Master's thesis, Korea National University of Transportation, Korea (in Korean).
  3. 한국강구조학회(2009) KBC2009 강구조설계, 구미서관. Korean Society of Steel Construction (2009) KBC2009 Design of Steel Structures, Goomiseogwan (in Korean).
  4. 김진호, 최성모(2001) 반복하중을 받는 고장력 볼트 마찰접합부의 역학적 거동에 관한 실험적 연구, 대한건축학회논문집, 대한건축학회, 제17권, 제9호, pp.97-105. Kim, J.H. and Choi, S.M. (2001) An Experimental Study on the Structural Behavior in Friction Type Bolted Joint Under Cyclic Loading, Journal of Architectural Institute of Korea, AIK, Vol.17, No.9, pp.97-105 (in Korean).
  5. 한국강구조학회(2009) KBC-09 강구조기준에 따른 고장력볼트 접합 시공지침, 한국강구조학회. KSSC (2009) KBC-09 Fabrication Guide for Structural Joints Using High-Strength Bolts, Korean Society of Steel Construction (in Korean).
  6. Det Norske Veritas (2015) DNV Offshore Standard DNVOS-H202 Sea transport operations (VMO Standard- Part 2-2).
  7. 이강민, 김강석, 나환선, 이현주, 오경환(2011) 고장력 볼트길이에 따른 체결 특성 평가, 한국구조물진단유지관리공학회 논문집, 한국구조물진단유지관리공학회, 제15권, 제6호, pp.127-134. Lee, K.M., Kim, K.S., Na, H.S., Lee, H.J., and Oh, K.H. (2011) An Evaluation of Clamping Characteristics for High Strength Bolts with Variable Bolt Lengths, Journal of The Korea Institute for Structural Maintenance and Inspection, KSMI, Vol.15, No.6, pp.127-134 (in Korean). https://doi.org/10.11112/jksmi.2011.15.6.127
  8. 나환선(2009) 고장력 볼트 축력-토크 상관관계와 미끄럼접합부 내력특성에 관한 연구, 박사학위논문, 공주대학교. Na, H.S. (2009) A Study on the Axial Force versus the Torque for High Strength Bolts and the Characteristics of the Serviceability on Slip Resistant Connections, Ph.D. Dissertation, Kongju University, Korea (in Korean).

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