Experimental study on performance of elliptical section steel columns, under hydrocarbon fire

Scullion, Tom; Ali, Faris; Nadjai, Ali

doi:10.1016/j.jcsr.2011.01.010

Cited by 17 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This can be attributed to their introduction and availability as hot-finished products [1], their aesthetic properties, which have led to their use in high-profile projects such as Heathrow Terminal 5, and their enhanced flexural properties about the major principal axis compared to CHS tubes [2]. Research into the structural response of EHS tubes has included testing, numerical modelling and the development of design rules for cross-sections in compression and bending [3][4][5], analysis of the buckling response of EHS columns [6], stainless steel EHS columns [7], EHS columns in fire [8], concrete-filled columns [9][10][11][12], beams [13] and beam-columns [14], and the behaviour of members in shear [15].…”

Section: Introductionmentioning

confidence: 99%

Local buckling and ultimate strength of slender elliptical hollow sections in compression

McCann

Fang

Gardner

et al. 2016

Engineering Structures

View full text Add to dashboard Cite

The local buckling behaviour and ultimate cross-sectional strength of tubular elliptical profiles in compression is examined in this study through numerical modelling. The numerical models were first validated against previous experimental data with good agreement observed, enabling an extensive parametric study to be performed. A total of 270 elliptical sections were simulated in order to examine the influence of cross-section aspect ratio, geometric imperfections and local slendernesses. The obtained ultimate capacities, load-deformation responses and failure modes are discussed. It was found that for lower cross-section aspect ratios the behaviour of the elliptical hollow sections (EHS) was similar to that of cylindrical shells across a number of metrics; however, as the aspect ratio increased, more plate-like stable postbuckling behaviour was observed. Imperfection sensitivity was found to decrease with increasing slenderness and aspect ratio. The influence of the shape of the initial imperfection on the strengths of the EHS columns was also assessed and was found to be generally limited. Finally, a design method has been proposed for Class 4 EHS members that reflects the reduction in capacity due to local buckling with increasing slenderness, but also recognises the improved postbuckling stability with increasing aspect ratio; the proposals were shown to provide safe and accurate predictions for the strengths of the EHS columns with nondimensional local slendernesses up to 2.5 and aspect ratios from 2 1.1 to 5.0.

show abstract

Section: Introductionmentioning

confidence: 99%

Local buckling and ultimate strength of slender elliptical hollow sections in compression

McCann

Fang

Gardner

et al. 2016

Engineering Structures

View full text Add to dashboard Cite

show abstract

“…This can be attributed to their introduction and availability as hot-finished products [1], their aesthetic properties, which have led to their use in high-profile projects such as Heathrow Terminal 5, Barajas Airport, Madrid, the University of Warwick and Cork Airport [2], and their enhanced flexural properties about the major principal axis when compared to circular hollow section (CHS) tubes [3]. Research into the structural response of EHS tubes has included testing, numerical modelling and the development of design rules for cross-sections in compression and bending [4][5][6][7], analysis of the global buckling response of EHS columns [7,8], stainless steel EHS columns [9], EHS columns in fire [10], concrete-filled EHS columns [11][12][13][14], beams [15] and beam-columns [16], the behaviour of members in shear [17] and the postbuckling behaviour and strength of slender EHS tubes in compression [18].…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis and design of slender elliptical hollow sections in bending

McCann

Gardner

2019

Thin-Walled Structures

View full text Add to dashboard Cite

The local buckling behaviour and ultimate cross-sectional resistance of slender tubular elliptical profiles in bending are examined by means of numerical modelling. After successful validation of the numerical model against previous experimental results, a parametric study comprising 240 simulations was conducted in order to investigate the influence of cross-section aspect ratio, axis of bending, geometric imperfections and local slenderness on structural behaviour. The ultimate moments, moment-curvature relationships and failure modes obtained are discussed. It was found that, overall, postbuckling stability increases and imperfection sensitivity decreases with increasing elliptical hollow section (EHS) aspect ratio. A design method is proposed for Class 4 EHS members that reflects the reduction in resistance due to local buckling with increasing slenderness and extends the range of applicability of existing provisions. A reliability analysis was performed in accordance with EN 1990,

show abstract

“…In turn, the fire behaviour of these columns has been numerically examined by the own authors [25] and by Dai and Lam [26], comparing their fire performance with other section shapes. Some work on unfilled EHS columns subjected to hydrocarbon fire carried out by Scullion et al [27] can be also cited. However, very limited experimental results are available on concrete-filled EHS columns exposed to fire, from previous tests performed by the authors of this paper [28].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the fire behaviour of rectangular and elliptical slender concrete-filled tubular columns

Espinós¹,

Romero²,

Serra³

et al. 2015

Thin-Walled Structures

View full text Add to dashboard Cite

While the fire behaviour of concrete-filled steel tubular (CFST) columns with circular and square cross-section has been well established based on experimental programs and numerical investigations, the information about the fire behaviour of CFST columns with rectangular or elliptical cross-section is very scarce. Therefore, further research is needed in order to establish the structural behaviour of concrete-filled elliptical and rectangular hollow sections at elevated temperatures as a basis for the future development of new design guidance. In this paper, a series of slender CFST columns of rectangular and elliptical crosssection are tested at elevated temperatures under both concentric and eccentric loads, reaching large eccentricities. The effect of the load eccentricity and percentage of reinforcement is studied, considering both major and minor axis buckling. The influence of the cross-section shape, load eccentricity and percentage of reinforcement on the fire behaviour of these columns is investigated. The experimental results are subsequently used to assess the current design rules in Eurocode 4 Part 1.2 for these new section shapes. Relative slenderness at room temperature, for major axis buckling Espinos A, Romero ML, Serra E, Hospitaler A. Experimental investigation on the fire behaviour of rectangular and elliptical slender concrete-filled tubular columns. Thin-Walled Struct. 2015;93:137-48.

show abstract

Experimental study on performance of elliptical section steel columns, under hydrocarbon fire

Cited by 17 publications

References 11 publications

Local buckling and ultimate strength of slender elliptical hollow sections in compression

Local buckling and ultimate strength of slender elliptical hollow sections in compression

Numerical analysis and design of slender elliptical hollow sections in bending

Experimental investigation on the fire behaviour of rectangular and elliptical slender concrete-filled tubular columns

Contact Info

Product

Resources

About