Interaction diagrams for reinforced concrete sections subjected to fire

Caldas, Rodrigo Barreto; Sousa, João Batista M.; Fakury, Ricardo Hallal

doi:10.1016/j.engstruct.2010.05.002

Cited by 38 publications

(25 citation statements)

References 6 publications

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“…Taking a simply supported column, for instance, the cases of columns for min have been illustrated in [18]. The results prove to be very close to results found in [6] and [14].…”

Section: Validation Of Interaction Curves 31 Validation Of Interactisupporting

confidence: 88%

“…Subsequently, the cases of columns with between one and four exposed surfaces are compared with the data from Caldas [14], who used the same input parameters as Meda [6]. The cases of columns with different exposed surfaces subjected to the ISO standard fire for 90 and 300 rocode [13] are adopted in this paper.…”

Section: Validation Of Interaction Curves 31 Validation Of Interactimentioning

confidence: 99%

“…On the other hand, the structural deformation as well as the increase in stress and strain during a fire are quantified using a structural analysis. Jeffers [10], [11] introduced a heat transfer element model to account for both transverse and longitudinal temperature variations in a structural member and then implemented this element formulation in a finite element program.In the last two decades, several simplified methods have been introduced to calculate interaction curves for structural members exposed to fire [14]. Nevertheless, these approaches focus on a cross-sectional calculation without considering second-order effects.…”

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confidence: 99%

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Extension of tabulated design parameters for rectangular columns exposed to fire taking into account second‐order effects and various fire models

Wang

Caspeele

Coile

et al. 2015

Structural Concrete

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Fire, as one of the most severe load conditions, has an important impact on concrete structures. It does not only affect the material strength, but also the structural stiffness and stability. A concrete column, compared to other structural members, has most often to cope both with vertical forces and bending moments transmitted by slabs and beams. Consequently, it is essential to find a reliable and practical way to establish interaction curves for the overall structural behaviour of concrete columns subjected to fire. In this paper, a cross-section calculation method based on the material models of Eurocode 2 is explained and adopted to calculate interaction curves for a typical rectangular column exposed to the ISO834 standard fire. Subsequently, an iterative approach is introduced to develop interaction curves taking into account second order effects in case of four-side heated fire exposure. The maximum permitted slenderness ratios of columns under different fire durations are obtained and compared with Eurocode 2 provisions. Finally, this method is applied to calculate the maximum permitted slenderness ratios for columns exposed to hydrocarbon fires and natural fires.

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“…Taking a simply supported column, for instance, the cases of columns for min have been illustrated in [18]. The results prove to be very close to results found in [6] and [14].…”

Section: Validation Of Interaction Curves 31 Validation Of Interactisupporting

confidence: 88%

Section: Validation Of Interaction Curves 31 Validation Of Interactimentioning

confidence: 99%

mentioning

confidence: 99%

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Extension of tabulated design parameters for rectangular columns exposed to fire taking into account second‐order effects and various fire models

Wang

Caspeele

Coile

et al. 2015

Structural Concrete

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show abstract

“…In recent years, numerical tools and finite element models have been developed for analysing the performance of concrete structures during fire exposure [2][3][4][5]. Some studies have even investigated the reliability of structural elements during fire exposure [6][7][8][9], ultimately allowing, for example, optimization of the design by balancing upfront investments in safety with a reduced probability of failure during the lifetime of the structure [10].…”

Section: Introductionmentioning

confidence: 99%

Towards a reliability‐based post‐fire assessment method for concrete slabs incorporating information from inspection

Coile

Caspeele

Taerwe

2014

Structural Concrete

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“…Attention has been more particularly focused on the determination of axial force-bending moment interaction diagrams of a reinforced concrete section subjected to a fire induced temperature gradient (Caldas et al (2010); Law & Gillie (2010)). In this context, the yield design (or limit analysis) approach (Chen (1982); Salençon (2013)) has proved being a suitable framework for determining such interaction diagrams in a rigorous way, either under ambient temperature (Averbuch (1996); Koechlin & Potapov (2007)), or when subjected to a fire-induced temperature gradient (Pham et al (2015a)).…”

Section: Introductionmentioning

confidence: 99%

Failure design of high-rise concrete panels under fire loading

Bleyer¹,

Pham²,

Buhan³

2015

Proceedings of the Institution of Civil Engineers - Engineering

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The present contribution addresses the crucial issue of predicting the failure of high rise reinforced concrete walls subjected to fire loading conditions. A three step procedure is proposed, in which the yield design (limit analysis) method is applied on two separate levels. First, as a way for assessing the local strength properties of the wall, modeled as a plate, as a function of temperature gradient across the wall thickness. Secondly for analyzing the overall stability of the wall in its fire-induced deformed configuration on account of the previously determined strength properties. A comprehensive numerical approach is set up, based on fem-based plate yield design computations associated with non-linear optimization schemes, and a first illustrative application is performed leading to first conclusive results regarding structural fire safety.

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Interaction diagrams for reinforced concrete sections subjected to fire

Cited by 38 publications

References 6 publications

Extension of tabulated design parameters for rectangular columns exposed to fire taking into account second‐order effects and various fire models

Extension of tabulated design parameters for rectangular columns exposed to fire taking into account second‐order effects and various fire models

Towards a reliability‐based post‐fire assessment method for concrete slabs incorporating information from inspection

Failure design of high-rise concrete panels under fire loading

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