Fire performance of CFRP strengthened cold-formed steel tubular columns

This paper presents a review of research progress in fire performance of concrete-filled steel tubular (CFST) columns. Experimental results of CFST columns in fire are reviewed with influence parameters, such as heights, cross-sectional dimension, section types, concrete types, concrete strengths, load ratio, load eccentricity, fire exposed sides and so on. Some conclusions of CFST columns under fire conditions are summarized. Deficiencies in the fire performance experiments of CFST columns are identified, which provide the focus for future research in the field.

Download Full-text

Axial behaviour of rectangular concrete-filled cold-formed steel tubular columns with different loading methods

Steel and Composite Structures ◽

10.12989/scs.2015.18.1.071 ◽

2015 ◽

Vol 18 (1) ◽

pp. 71-90 ◽

Cited By ~ 8

Author(s):

Xiushu Qu ◽

Zhihua Chen ◽

Guojun Sun

Keyword(s):

Tubular Columns ◽

Cold Formed Steel ◽

Loading Methods

Download Full-text

Fire performance of cold-formed steel wall panels and prediction of their fire resistance rating

Fire Safety Journal ◽

10.1016/j.firesaf.2013.12.003 ◽

2014 ◽

Vol 64 ◽

pp. 61-80 ◽

Cited By ~ 20

Author(s):

Shanmuganathan Gunalan ◽

Mahen Mahendran

Keyword(s):

Fire Resistance ◽

Fire Performance ◽

Wall Panels ◽

Cold Formed Steel ◽

Fire Resistance Rating ◽

Resistance Rating

Download Full-text

Simplified calculation model for load-bearing cold-formed steel composite walls under fire conditions

Advances in Structural Engineering ◽

10.1177/1369433219899790 ◽

2020 ◽

Vol 23 (8) ◽

pp. 1683-1701

Author(s):

Wenwen Chen ◽

Jihong Ye

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Calculation Model ◽

Fire Performance ◽

Element Analysis ◽

Lateral Deflection ◽

Steel Composite ◽

Cold Formed Steel ◽

Composite Walls ◽

Simplified Calculation

The conventional simplified model only restricts the bending buckling around the minor axis and overall torsional buckling, which is not suitable for external sandwiched cold-formed steel composite walls. Moreover, a solution to stud–track connections must be achieved in establishing the overall structure model. In this article, a simplified calculation model is proposed to accurately and efficiently reveal the fire performance of cold-formed steel composite walls. A tension spring is adopted to simulate the boundary condition that limits the axial thermal expansion of the studs at elevated temperature. Meanwhile, the simplified applications of the panel constraints and stud–track connections are also given in details. Finite element analysis using the developed simplified calculation model is conducted to simulate five full-scale cold-formed steel composite walls with different configurations. Comparisons between the finite element analysis and fire test results show an overall agreement on the failure modes, cold flange temperatures and lateral deflections at mid-height of the studs. These results demonstrate that the developed simplified calculation model is able to simulate the fire performance and predict the lateral deflection of the external sandwiched cold-formed steel composite walls accurately. Finally, the key factors affecting the lateral deflection of the studs are analysed.

Download Full-text