Experimental investigation on ferritic stainless steel columns in fire

Tondini, Nicola; Rossi, Barbara; Franssen, Jean‐Marc

doi:10.1016/j.firesaf.2013.09.026

Cited by 47 publications

(47 citation statements)

References 11 publications

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“…These specific factors for stainless steel are given in Annex C of EN 1993-1-2, where a stress-strain relationship for stainless steel at elevated temperatures is also defined. Since this standard was published, a significant amount of further research has been carried out into the performance of stainless steel in fire [31][32][33][34][35][36][37][38] and more data are available on the performance of a larger number of stainless steels suitable for structural applications. In the next edition of EN 1993-1-2, it is therefore proposed to include eight generic sets of reduction factors which describe the elevated temperature behaviour for a group of stainless steels, instead of a set of reduction factors for each specific grade of stainless steel [39].…”

Section: Fire Resistant Design Of Structural Stainless Steelmentioning

confidence: 99%

Elevated temperature material properties of stainless steel reinforcing bar

Gardner

Francis

et al. 2016

Construction and Building Materials

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Corrosion of carbon steel reinforcing bar can lead to deterioration of concrete structures, especially in regions where road salt is heavily used or in areas close to sea water. Although stainless steel reinforcing bar costs more than carbon steel, its selective use for high risk elements is cost-effective when the whole life costs of the structure are taken into account. Considerations for specifying stainless steel reinforcing bars and a review of applications are presented herein. Attention is then given to the elevated temperature properties of stainless steel reinforcing bars, which are needed for structural fire design, but have been unexplored to date. A programme of isothermal and anisothermal tensile tests on four types of stainless steel reinforcing bar is described: 1.4307 (304L), 1.4311 (304LN), 1.4162 (LDX 2101  ) and 1.4362 (2304). Bars of diameter 12 mm and 16 mm were studied, plain round and ribbed. Reduction factors were calculated for the key strength, stiffness and ductility properties and compared to equivalent factors for stainless steel plate and strip, as well as those for carbon steel reinforcement. The test results demonstrate that the reduction factors for 0.2% proof strength, strength at 2% strain and ultimate strength derived for stainless steel plate and strip can also be applied to stainless steel reinforcing bar. Revised reduction factors for ultimate strain and fracture strain at elevated temperatures have been proposed. The ability of two-stage Ramberg-Osgood expressions to capture accurately the stress-strain response of stainless steel reinforcement at both room temperature and elevated temperatures is also demonstrated.

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Section: Fire Resistant Design Of Structural Stainless Steelmentioning

confidence: 99%

Elevated temperature material properties of stainless steel reinforcing bar

Gardner

Francis

et al. 2016

Construction and Building Materials

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“…At material level, the elevated temperature behaviour of stainless steel has been studied extensively by means of isothermal and anisothermal tests [1][2][3], where it has been shown that stainless steel generally offers better retention of strength and stiffness than carbon steel, especially at the temperature range of 500-800 °C, owing to the beneficial effects of the alloying elements. At member level, experimental and numerical modelling studies of the response of unprotected stainless steel structural members exposed to fire have been performed [4][5][6][7][8], which provided a valuable insight into the effects of instability, temperature gradients and full cross-sectional behaviour on fire performance. However, most previous studies have been mainly focused on understanding the fire performance of individual elements such as statically determinate columns and beams, leading to the development of component based fire design guidelines such as those in EN 1993-1-2 [9].…”

Section: Introductionmentioning

confidence: 99%

Elevated temperature performance of restrained stainless steel beams

2019

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This paper reports the results of a numerical investigation into the response of axially restrained austenitic stainless steel beams in fire, where in addition to the degradation of strength and stiffness at elevated temperatures, the influence of thermally induced stresses, are also included. The finite element (FE) programme ABAQUS has been used to model austenitic stainless steel welded I-section beams of different axial end restraint stiffness subjected to fire. The FE models are firstly validated against a selection of literature test data, which are shown to accurately capture the effects of restrained thermal deformations with a high degree of accuracy, and then used to perform parametric studies to further explore the structural behaviour in fire. A simplified analytical model for predicting the restraint axial force-temperature response is presented and validated against the numerically obtained results. The numerical models and the simplified analytical model allow the influence of frame continuity to be explicitly considered in design of stainless steel members in fire to quantify the required strength and ductility demands on connections for catenary action to develop. Comparisons with carbon steel beams demonstrate that while austenitic stainless steel beams show similar stages of behaviour in fire, they are capable of withstanding higher temperatures prior to the onset of catenary action, while developing similar levels of maximum tensile catenary force to carbon steel beams, despite the higher thermal expansion of the material.

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“…Test specimens for the push tests [17] (a) (b) Figure 11 Push test failed specimens (a) concrete and (b) deck (a) (b) Figure 12 (a) Unprotected beam specimen after testing [12] and (b) 3000 mm column specimen following testing [17,35] Tensile test sample of a bolted connection test on Grade 1.4509 ferritic stainless steel with a thickness of 1 mm…”

Section: Tables -Ferritic Stainless Steels In Structural Applicationsmentioning

confidence: 99%

Ferritic stainless steels in structural applications

Cashell

Baddoo

2014

Thin-Walled Structures

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Ferritic stainless steels are low cost, price-stable, corrosion-resistant materials. Although widely used in the automotive and domestic appliance sectors, structural applications are scarce owing to a dearth of performance data and design guidance. The characteristics of ferritics make them appropriate for structures requiring strong and moderately durable structural elements with attractive metallic surface finishes. The present paper provides an overview of the structural behaviour of ferritic stainless steels, including a summary of the findings of a recent European project (SAFSS) on ferritics. Laboratory experiments have been completed including material tests as well as structural member tests, both at ambient and elevated temperature. The experimental data is supplemented by numerical analysis in order to study a wide range of parameters. The findings of this work have enabled design guidance to be proposed, as discussed herein.

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Experimental investigation on ferritic stainless steel columns in fire

Cited by 47 publications

References 11 publications

Elevated temperature material properties of stainless steel reinforcing bar

Elevated temperature material properties of stainless steel reinforcing bar

Elevated temperature performance of restrained stainless steel beams

Ferritic stainless steels in structural applications

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