Steel and Composite Structures

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Post-buckling behaviours of axially restrained steel columns in fire

  • Li, Guo-Qiang (College of Civil Engineering, Tongji University) ;
  • Wang, Peijun (College of Civil Engineering, Tongji University) ;
  • Hou, Hetao (Building Department of Shandong University)
  • Received : 2006.11.03
  • Accepted : 2007.10.29
  • Published : 2009.03.25
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Abstract

This paper presents a simplified model to study post-buckling behaviours of the axially restrained steel column at elevated temperatures in fire. The contribution of axial deformation to the curvature of column section is included in theoretical equations. The possible unloading at the convex side of the column when buckling occurs is considered in the stress-strain relationship of steel at elevated temperatures. Parameters that affect structural behaviours of the axial restrained column in fire are studied. The axial restraint cause an increase in the axial force before the column buckles; the buckling temperature of restrained columns will be lower than non-restrained steel columns. However, the axial force of a restrained column decreases after the column buckles with the elevation of temperatures, so make use of the post-buckling behaviour can increase the critical temperature of restrained columns. Columns with temperature gradient across the section will produce lower axial force at elevated temperatures.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

References

  1. El-Rimawi, J. A., Burgess, I. W. and Plank, R. J. (1996), "The treatment of strain reversal in structural members during the cooling phase of a fire", Fire Safety J., 37(2), 115-135.
  2. European Committee for Standardization (CEN) ENV 1993-1-2 (2001), Eurocode 3 design of steel structures, part 1.2 general rules/structural fire design, London: British Standards Institution.
  3. Franssen, J. M. (2000), "Failure temperature of a system comprising a restrained column submitted to Fire", Fire Safety J., 34(2), 191-207. https://doi.org/10.1016/S0379-7112(99)00047-8
  4. Lamont, S. (2001), "The behaviour of multi-storey composite steel framed structures in response to compartment fires", PhD Thesis, University of Edinburgh.
  5. Neves, I.C. (1995), "The critical temperature of steel columns with restrained thermal elongation", Fire Safety J., 24(3), 211-227. https://doi.org/10.1016/0379-7112(95)00026-P
  6. Rodrigues, J. P. C., Neves, I. C. and Valente, J. C. (2000), "Experimental research on the critical temperature of compressed steel elements with restrained thermal elongation", Fire Safety J., 35(2), 77-98. https://doi.org/10.1016/S0379-7112(00)00018-7
  7. Sharples, J.R., Plank, R.J. and Nethercot, D.A.(1994), "Load-temperature-deformation behaviour of partially protected steel columns in fire", Eng. Struct., 16(8), 637-643. https://doi.org/10.1016/0141-0296(94)90049-3
  8. Shanley, F. R. (1947), "Inelastic column theory", Aeronaut. Sci., 14(5), 261-267. https://doi.org/10.2514/8.1346
  9. Simms, W. I., O'Connor, D. J., Ali, F. and Randall, M. (1995-1996), "An experimental investigation on the structural performance of steel columns subjected to elevated Temperatures", J. Fire Sci., 5(4), 269-284.
  10. Wang, Y. C. (2004), "Post-buckling behaviour of axially restrained and axially loaded steel columns under fire conditions", J. Struct. Eng. ASCE, 130(3), 371-380. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:3(371)

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