대한건축학회논문집:구조계 (Journal of the Architectural Institute of Korea Structure & Construction)

  • 제35권8호
  • /
  • Pages.139-148
  • /
  • 2019
  • /
  • 1226-9107(pISSN)
  • /
  • 2384-1788(eISSN)
대한건축학회 (Architectural Institute of Korea)
권호 표지
DOI QR코드

DOI QR Code

화재에 노출된 단층 돔의 후좌굴 거동에 관한 연구

A Study on the Post-buckling Behaviour of Single-layer Domes exposed to Fire

  • 이상진 (경상대학교 건축공학과) ;
  • 배정은 (경상대학교 구조연구실 & SJ미래)
  • 투고 : 2019.04.30
  • 심사 : 2019.08.08
  • 발행 : 2019.08.30
⟨ 이전 논문 다음 논문 ⟩

초록

The lightweight structures such as domes are particularly vulnerable when it has been subjected to high temperature induced by the fire. It is therefore crucial to predict the possible instability path of structures exposed to the fire in structural design process. In this study, the instabilities of single-layer domes is investigated by using finite element technologies with the consideration of high temperature. The material properties of members under high temperature are considered by using the reduction factors which is provided in Eurocodes 3. Some damage patterns are assumed with use of a structural unit which is symmetric in radial direction. For numerical evaluations, the geometrically nonlinear truss element is implemented and the arch-length control method is employed to trace the post-buckling behaviour of domes. From numerical results, it is found to be that a significant change of post-buckling behaviour is detected in dome structures when structural members are exposed to the fire.

키워드

참고문헌

  1. Baetu, G. Galatanu, T. & Baetu, S. (2017). Behaviour of Steel Structures under Elevated Temperature, Procedia Engieering, 181(2), 265-272. https://doi.org/10.1016/j.proeng.2017.02.388
  2. Chilton, J. (2000). Space Grid Structures, Architectural Press, Oxford.
  3. Crosti, C. (2009). Structural Analysis of Steel Structures under Fire Loading, Acta Polytechnica, 49, 21-28. https://doi.org/10.14311/1083
  4. Eurocode 3 - Design of steel structures, Part 1.2: Struc-tural fire design, Commission of the European Communities, Brussels, 1993.
  5. Lee, S.J. (2016). Nonlinear Static Analysis of Cable Roof Structures with Unified Kinematic Description, Architectural Research, 18(1), 37-47.
  6. Press, W.H., Teukolsky S.A., Vetterling W.T., & Flannery, B.P. (1992) Numerical recipes in Fortran 77: the art of scientific computing, Cambridge University Press, 1996
  7. Twilt, L. (2001). The new eurocode on fire design of steel structures, International Seminar on Steel Structures in Fire, November 1-3, Shanghai, China
  8. Yu, Y., Paulino, G.H. & Luo, Y. (2011). Finite Particle Method for Progressive Failure Simulation of Truss Structures, J of Structural Engieering, 137, 1168-1181. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000321
  9. Winful, D., Cashell, K.A, Barnes, A. A. & Pargeter, R.J. (2017). Elevated Temperature Material Behaviour of High Strength Steel, Proceedings of the Institute of Civil Engineer-Structures and Buildings, 170(11), 777-787. https://doi.org/10.1680/jstbu.16.00213