DOI QR코드

DOI QR Code

Analysis of behaviour of steel beams with web openings at elevated temperatures

  • Yin, Y.Z. (Ove Arup & Partners HongKong Ltd.) ;
  • Wang, Y.C. (School of Mechanical, Aerospace and Civil Engineering (MACE), The University of Manchester)
  • 투고 : 2004.12.28
  • 심사 : 2005.09.15
  • 발행 : 2006.02.25

초록

Beams with web openings are an attractive system for multi-storey buildings where it is always desirable to have long spans. The openings in the web of steel beams enable building services to be integrated within the constructional depth of a floor, thus reducing the total floor depth. At the same time, the increased beam depth can give high bending moment capacity, thus allowing long spans. However, almost all of the research studies on web openings have been concentrated on beam behaviour at ambient temperature. In this paper, a preliminary numerical analysis using ABAQUS is conducted to develop a general understanding of the effect of the presence of web opening on the behaviour of steel beams at elevated temperatures. It is concluded that the presence of web openings will have substantial influence on the failure temperatures of axially unrestrained beams and the opening size at the critical position in the beam is the most important factor. For axially restrained beams, the effect of web openings on the beam's large deflection behaviour and catenary force is smaller and it is the maximum opening size that will affect the beam's response at very high temperatures. However, it is possible that catenary action develops in beams with web openings at temperatures much lower than the failure temperatures of the same beam without axial restraint that are often used as the basis of current design.

키워드

참고문헌

  1. ABAQUS (2001), Standard User's Manual. Version 6.2, Hibbitt, Karlsson & Sorensen Inc
  2. Chung, K.F., Liu, T.C.H. and Ko, A.C.H. (2001), 'Investigation on vierendeel mechanism in steel beams with circular web openings', J. Constr. Steel Res., 57, 467-490 https://doi.org/10.1016/S0143-974X(00)00035-3
  3. Chung, K.F., Liu, T.C.H. and Ko, A.C.H. (2003), 'Steel beams with large web openings of various shapes and sizes: An empirical design method using a generalised moment - shear interaction curve', J. Constr. Steel Res., 59,1177-1200 https://doi.org/10.1016/S0143-974X(03)00029-4
  4. Liu, T.C.H. and Chung, K.F. (2003), 'Steel beams with large web openings of various shapes and sizes: Finite element investigation', J. Constr. Steel Res., 59, I159-1176
  5. Redwood, R. and Cho, S.H. (1993), 'Design of stcel and composite beams with web openings', J. Constr. Steel Res., 25, 23-41 https://doi.org/10.1016/0143-974X(93)90050-3
  6. Yin, Y.Z. and Wang, Y.C (2003), 'Numerical simulations of the effects of non-uniform temperature distributions on lateral torsional buckling resistance of steel I-beams', J. Constr. Steel Res., 59, 1009-1033 https://doi.org/10.1016/S0143-974X(03)00003-8
  7. Yin, Y.Z. and Wang, Y.C. (2004), 'A numcrical study of large deflection behaviour of steel beams at elevated temperatures', J. Constr. Steel Res., 60, 1029-1047 https://doi.org/10.1016/j.jcsr.2003.09.005

피인용 문헌

  1. Axially restrained steel beams with web openings at elevated temperatures, part 1: Behaviour and numerical simulation results vol.128, 2017, https://doi.org/10.1016/j.jcsr.2016.10.002
  2. Practical Design Methods for Fire Resistance of Restrained Cellular Steel Beams vol.19, pp.6, 2006, https://doi.org/10.1007/s13296-019-00248-w