한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제12권12호
  • /
  • Pages.5984-5989
  • /
  • 2011
  • /
  • 1975-4701(pISSN)
  • /
  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
권호 표지
DOI QR코드

DOI QR Code

트러스로 보강된 단일기둥시스템의 탄성좌굴강도에 대한 연구

A Study on Elastic Buckling Strength of Truss-Stayed Single Column System

  • 김경식 (청주대학교 토목환경공학과)
  • Kim, Kyung-Sik (Department of Civil and Environmental Engineering, Cheongju University)
  • 투고 : 2011.11.15
  • 심사 : 2011.12.13
  • 발행 : 2011.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

양단 핀지지 기둥부재의 중간 위치에 수평재를 연결하고 설치된 수평재의 양끝단과 기둥의 상하끝단을 트러스로 연결된 트러스보강 단일기둥시스템은 보강되지 않은 경우에 비해 그 좌굴강도가 상당수준 향상될 수 있다. 수평재가 설치된 기둥중간지점에서의 수평 및 회전 자유도에 대한 제한하여 기둥의 유효좌굴길이를 줄이는 효과를 통해 강도향상이 구현된다. 본 연구에서는 해석적 해와 탄성 및 비탄성 유한요소해석을 통해 보강된 평면내 단일기둥 시스템의 좌굴강도를 정량적으로 산정하였고 그 결과를 비교하였다. 예제해석을 통해 보강된 단일기둥시스템은 보강되지 않은 단순기둥에 비해 최대 8배까지 좌굴강도가 향상될 수 있음이 확인되었다.

The buckling strength of a pin-ended column may be increased significantly by reinforcing it with an assemblage of cross-arm members rigidly connected to the modpoint of the column and stayed members connecting the ends of the columns and cross-arm members. The purpose of the stays and cross-arm members is to introduce restraint against translation and rotation and thereby decrease the effective buckling length of the column. In this study, buckling strengths of the reinforced columns were quantitatively evaluated from analytical solutions and elastic/inelastic finite elements analysis and the results were compared each other. It was found that the reinforcing system may increase the buckling strength up to 8 times compared to ones without reinforcing system.

키워드

참고문헌

  1. AISC (American Institute of Steel Construction) Maual of steel construction, Load and Resistance Factor Design, Chicago, 2001.
  2. Bleich, F. Buckling strength of metal structures, McGraw-Hill Book Co., New York, NY. 1952.
  3. Timoshenko, S. P. and Gere, J. N. Theory of elastic stability, McGraw-Hill Book Co., New York, NY. 1961.
  4. Vlasov, V. Z. Thin-walled elastic beams, Israel program for scientific translations Ltd., Jerusalem. 1961.
  5. Chu, K. H., Berge, S. S. Analysis and design of struts with tension ties. Journal of Structural Division, ASCE, 89(ST1): 127-163. 1963.
  6. Mauch, H. R., Felton, L. P. Optimum design supported by tension ties. Journal of Structural Division, ASCE, 93(ST 3): 201-220. 1967.
  7. Smith, E. A. Behavior of columns with pretensioned stays. Journal of Structural Division, ASCE, 111(5): 961-72. 1985. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:5(961)
  8. Hafez, H. H., Temple, M. C., Ellis, J. S. Pretensioning of single-crossarm stayed columns. Journal of Structural Division, ASCE, 105(ST 2): 359-75. 1979.
  9. Hathout, I. A., Temple, M. C., Ellis, J. S. Buckling of space stayed columns. Journal of Structural Division, ASCE, 105(ST 9): 1805-22. 1979.
  10. Temple M. C. Buckling of stayed columns. Journal of Structural Division, ASCE, 103(ST 4): 839-851. 1977.
  11. ABAQUS Inc. ABAQUS Analysis user's manual. Pawtucket RI. 2003.
  12. Pi Y-L, Bradford MA. Strength design of steel I-section beams curved in plane. Journal of Structural Engineering, ASCE 127(6): 639-646. 2001. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:6(639)
  13. Kim, K and Yoo, C. H. Ultimate strengths of steel rectangular box beams subjected to combined action of bending and torsion. Engineering Structures, 30(2008): 1677-1687, 2008. https://doi.org/10.1016/j.engstruct.2007.11.011