DOI QR코드

DOI QR Code

Experimental Study on Improvement of Pipe-rack Joint

Pipe-rack접합부 개선방법에 관한 실험적 연구

  • 이종균 (영산대학교 플랜트학과)
  • Received : 2017.05.22
  • Accepted : 2018.03.16
  • Published : 2018.07.01

Abstract

The development of new technology and process in industrial Plant which builds integrated structures, facilities and systems. Has become a key element for strengthening its competitiveness. Although domestic industrial Plant has demonstrated excellence in technology with a persistent increase in order quantity and orders received, the technology gap between countries has narrowed due to global construction trend. Therefore, it is necessary to develop new technology that could help overcome constraints and limitations of the current one to follow the trend in the age of unlimited competition. This study has focused on assembly technology of Pipe-rack joint connection in an effort to strengthen technological competitiveness in industrial Plant. Through an analysis of earlier studies on Pipe-rack and a coMParative analysis of strengths and weaknesses of current assembly technology of it, a new design plan has been made to improve it efficiently. In doing this, standards for design factors of both structural and performance features have been drawn, and value of stress, strain, moment and rotation has been calculated using finite element analysis. As a result, installation technology of modular type Pipe-rack, which has not been developed in Korea and is differentiated from the current one, has been developed. It is considered that the technology reduces work time and saves cost due to simplified joint connection of steel structure, unlike the current one. Moreover, since it is installed without a welding process in the field, industrial accidents would be reduced, which is likely to have economic competitiveness and satisfy.

일반적인 플랜트 산업에서의 파이프라인은 지지형식으로만 구조설계를 하고 있으며 시공방법이 용접에 의한 단순접합방법을 선호하고 있다. 그러나 플랜트 산업 특성상 용접 불꽃에 의한 화재발생시 매우 위험함으로 통상적인 고장력 볼트 접합을 단순화하여 내진성능이 확보되는 파이프랙 접합방식을 개선하는 연구이다. 연구결과 H-Beam 대 H-Beam의 접합기술의 향상과, 내진성능이 향상된 파이프랙 구조기술 개발, 파이프랙 제작 및 설치 시간 단축 기술 개발, 다양한 방법의 철 구조물 설치 기술 개발, 적용분야 확대에 따른 기술의 접근성 향상이라는 효과를 얻을 수 있다. 경제적 측면에서는 기존 파이프랙 공법에 비해 현장설치 공정 축소로 인건비 및 장비비 절감 효과를 기대할 수 있으며, 자재비의 경우 H-Beam 연결을 위한 고장력 볼트의 수량 감소효과 대비 대량생산을 위한 금형비용 발생으로 원가가 절감될 수 있다. 안정성 측면에는 기존의 현장설치에서 나타났던 다소 큰 위험성 요소를 최소화시킬 수 있는 공장제작 공정을 통해 접합 작업자의 안정성을 증대시킬 수 있을 것으로 판단된다.

Keywords

References

  1. Back, M. C. (2014), A Study on the Upper and Lower Split T Joints for Seismic Joint Design, Inha unversity graduate master's thesis.
  2. Englekirk, R. E. (2003), Seismic Design of Reinforced and Precast Concrete Buildings, Wiley, New York, NY.
  3. Kang, T.H.-K., Shin, M., Mitra, N., and Bonacci, J. F. (2009), Seismic Design of reinforced concrete beam-column joints with headed bars, ACI Struct. J., 106(6), 868-877.
  4. Kim, J. H. (2011), HCB(Hybrid Castellated Beam) Beam-column joint Seismic performance Retrofitting Improvement, Architectural Institute of Korea, 31(2).
  5. Kim, S. Y. (2014), Sejong unversity graduate civil & environmental engineering master's thesis "A study for behavior of pipe rack structures".
  6. Lee, J. H. (2015), Korean recycled construction resource institute "Thermal behavior of a pipe-rack structure subjected to environmental factors", Journal, 3(2), 165-170. https://doi.org/10.14190/JRCR.2015.3.2.165
  7. Mun, K. H. (2014), Earthquake Engineering Society of Korea "Seismic Performance Evaluation According to Rotation Capacity of Connections for Intermediate Steel Moment Frames - I. Performance Eval - I", Journal, 18(2).
  8. Piyawat, K., Ramseyer, C., and Kang, T.H.-K. (2011), "Nonlinear buckling of built-up cold-formed sections", Int. J. of Theoretical & App. Multi-Scale Mech., 2(2), 146-164. https://doi.org/10.1504/IJTAMM.2011.043536
  9. Probst, A. D., Kang, T.H.-K., Ramseyer, C., and Kim, U. (2010), "Composite flexural behavior of full-scale concrete filled tubes without axial loads", ASCE J. of Struct. Engr., 136(11), 1401-1412. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000241
  10. Yu, J. K. (2012), Sejong unversity graduate civil & environmental engineering master's thesis "A study for safety diagnose of pipe rack structures " 2012.