Membrane action of unrestrained lightly reinforced concrete slabs at large displacements

Bailey, Colin

doi:10.1016/s0141-0296(00)00064-x

Cited by 135 publications

(94 citation statements)

References 10 publications

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“…4 [42] In Figure 3.5 the temperature development in the slab is shown. On curve D11a can be seen that the temperature at the bottom surface approximately followed the gas temperature at the beginning.…”

Section: Results Testmentioning

confidence: 99%

“…The best-known and most commonly used model for designing composite slabs in case of fire is the method of Colin Bailey [4], [5], [6], [7], [8]. The Bailey method is based on the yield line theory which has been developed for slabs under ambient temperature and small displacements.…”

Section: Bailey Methodsmentioning

confidence: 99%

“…A composite cross-section can be replaced by an equivalent rectangular cross-section with an effective thickness h e f f according to DIN EN 1994-1-2, Annex D.4 [32]. The equation for calculating h e f f includes all five geometric parameters: 4.14: Geometrical notation of steel deckings according to [32] The area of a rectangular cross-section with the depth h e f f is equal to the area of the original crosssection. If a composite slab is replaced by a full concrete slab with the depth h e f f , the formulas determined in the previous section are a good approximation for the substitute thermal loading.…”

Section: Composite Slabsmentioning

confidence: 99%

“…A single full concrete slab panel with a depth of 10 cm is considered as shown in Figure 5 The slab is loaded with a substitute thermal loading for R90 of ε θ ,subs = 3.169 ‰ and κ θ ,subs = 87.41 km −1 according to Table 4. 4. This value is set to 100 %.…”

Section: Influence Of Stiffnessmentioning

confidence: 99%

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Design of Composite Slab Systems in Case of Fire Using Simplified Finite Element Analyses

Stadler¹

2013

Stahlbau

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A new method is presented in this thesis for designing both full concrete and composite slab systems with partially unprotected secondary steel beams in case of fire taking into account tensile membrane action.Simplified finite element analyses are used for determining the internal forces in the structure. Crosssection design procedures can be applied with these internal forces to calculate the required reinforcement amount like under ambient temperature. The finite element model is simplified by replacing the thermal analysis with a substitute thermal loading. Non-linear material behaviour is taken into account by a reduced stiffness of the model which allows an efficient linear elastic calculation. The presented method therefore enables a simple and efficient design of slab systems in case of fire. Zusammenfassung

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Section: Results Testmentioning

confidence: 99%

Section: Bailey Methodsmentioning

confidence: 99%

Section: Composite Slabsmentioning

confidence: 99%

Section: Influence Of Stiffnessmentioning

confidence: 99%

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Design of Composite Slab Systems in Case of Fire Using Simplified Finite Element Analyses

Stadler¹

2013

Stahlbau

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“…The tensile membrane action of slabs is not fully understood at elevated temperatures. However, based on tests [9][10][11][12], a design method for determining the ultimate load carrying capacity of two-way slabs has been developed by considering the effects of tensile membrane enhancement at elevated temperatures. The tensile membrane action in slabs is sensitive to the duration of fire exposure, the restraint of the edges of slabs, and the arrangement of reinforcing bars in the slabs.…”

Section: Introductionmentioning

confidence: 99%

The fire behaviour of multi-bay, two-way reinforced concrete slabs

Moss

Dhakal

Wang³

et al. 2008

Engineering Structures

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This paper describes numerical modelling of the fire behaviour of two-way reinforced concrete slabs in a multi-storey multi-bay building. The building is square, with three bays in each direction. The concrete slab is supported by a perimeter frame, four internal columns and no internal beams. It is assumed that all nine bays of the concrete slab at one level are subjected to fire from below. Two fires were used; the standard ISO834 fire for a 4 hour duration, and a parametric fire based on the ISO834 fire for one hour with the temperatures decaying to ambient in another two hours. The effects of the fires are described in relation to the redistribution of bending moments and the development of tension field action in the slab.

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References

2016

Structural Design for Fire Safety

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Membrane action of unrestrained lightly reinforced concrete slabs at large displacements

Cited by 135 publications

References 10 publications

Design of Composite Slab Systems in Case of Fire Using Simplified Finite Element Analyses

Design of Composite Slab Systems in Case of Fire Using Simplified Finite Element Analyses

The fire behaviour of multi-bay, two-way reinforced concrete slabs

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