Effect of earthquake damage on the behaviour of composite steel frames in fire

Suwondo, Riza; Gillie, Martin; Cunningham, Lee S.; Bailey, Colin

doi:10.1177/1369433218761138

Cited by 13 publications

(13 citation statements)

References 29 publications

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“…However, these studies mainly assumed that vertical support along the perimeter of the slab panel was provided by fully protected beams. Fire insulation delamination on the protected beam may occur in an earthquake and increase vertical deflection in the protected beams under fire conditions [10]. This can influence the ability of a structure to develop tensile membrane action.…”

Section: Figure 1: Tensile Membrane Action Mechanismmentioning

confidence: 99%

“…Significant research has been conducted on the behaviour steel frames subject to fire following earthquake induced ground motion [6][7][8][9][10]. However, there is still a lack of detailed research on the effect of earthquake damages on the development of tensile membrane action.…”

Section: Introductionmentioning

confidence: 99%

“…However, there is still a lack of detailed research on the effect of earthquake damages on the development of tensile membrane action. In a previous study by the authors [10], the effect of earthquake damage on a composite steel frame in fire was examined. Two types of earthquake damage, fire insulation delamination and residual deformation, were investigated separately.…”

Section: Introductionmentioning

confidence: 99%

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Improving the performance of composite floors subjected to post-earthquake fire

Suwondo

Cunningham

Gillie

et al. 2018

Fire Safety Journal

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It is well-known that tensile membrane action in concrete floor slabs can enhance the fire resistance of a composite steel frame building. Vertical supports provided by protected beams along the edge of the slab panel play an important role in the development of the tensile membrane actions. The present study investigates the effect of fire insulation delamination on the protected beam, as might occur in an earthquake, on the fire resistance of composite floors subject to fire following an earthquake. The results show that fire insulation delamination considerably reduces the development of tensile membrane action. Based on the results obtained, two methods of improvement are presented to enhance the development of tensile membrane action concurrent with fire insulation delamination. It is found that increasing slab thickness and improving fire protection rating can enhance the fire resistance of the whole building even with fire insulation delamination.

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Section: Figure 1: Tensile Membrane Action Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improving the performance of composite floors subjected to post-earthquake fire

Suwondo

Cunningham

Gillie

et al. 2018

Fire Safety Journal

Self Cite

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“…It should also be noted that the majority of previous works have investigated the progressive collapse of the building under fire events only. The previous study by the present authors [12] adopted three-dimensional models to analyse the behaviour of earthquake damaged composite steel-frames in fire. The results showed that earthquake damage significantly reduces the fire resistance of the composite building.…”

Section: Introductionmentioning

confidence: 99%

Progressive collapse analysis of composite steel frames subject to fire following earthquake

Suwondo

Cunningham

Gillie

et al. 2019

Fire Safety Journal

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This paper presents three-dimensional progressive collapse analyses of composite steel frames exposed to fire following earthquake. The scenarios of heating columns located in various different fire compartments (internal, edge and corner bay) are first studied to investigate load redistribution paths and members' interactions within the composite frame. The results show that the loads previously supported by the heated columns are redistributed to adjacent columns along two horizontal directions, a phenomenon which cannot be captured in a 2D model. Then, the 3D model is adopted to investigate the effect of residual deformation after an earthquake on the progressive collapse behaviour of the composite building. It is found that neither the load redistribution path nor the fire resistance of the building is considerably affected by the residual deformation. A series of progressive collapse analyses subjected to travelling fires resulting from fire compartment damage is also performed. It is concluded that the survival of the building can be greatly affected by the spatial nature of the travelling fire as well as the inter-zone time delay.

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“…In [20] the damage of a fire protection concrete board applied to a steel beam was considered, in the framework of coupled temperature -stress analysis. In [21] a study of the delamination effect during post-earthquake fire on composite steel frames, revealed that delamination of fire protection at the bottom of columns causes a large reduction in the fire resistance time, up to 70%. In the majority of the published research, the concurrent appearance of mechanical and thermal phenomena is not taken into account.…”

Section: Introductionmentioning

confidence: 99%

Failure behaviour of a fire protected steel element

Drosopoulos

Motsa

2018

Frattura Ed Integrità Strutturale

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In the present article the failure behaviour of a steel, beam type element supported against fire by protection boards, is studied. Threedimensional, coupled temperature-displacement, non-linear finite element analysis models have been developed to simulate the unprotected and protected structure. A simple modelling approach is proposed for the investigation of the influence of the gradual failure of fire protection at elevated temperatures, on the structural performance of the system, under thermal and mechanical loads. Yielding of steel is depicted and forcedisplacement diagrams are used to evaluate the ultimate behaviour of the unprotected and protected models. It is shown that for the protected structure, yielding is less severe and the time period up to maximum strength is significantly longer. Eventually, is depicted how failure of the fire protection leads to a gradual reduction of the response, in fire conditions.

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Effect of earthquake damage on the behaviour of composite steel frames in fire

Cited by 13 publications

References 29 publications

Improving the performance of composite floors subjected to post-earthquake fire

Improving the performance of composite floors subjected to post-earthquake fire

Progressive collapse analysis of composite steel frames subject to fire following earthquake

Failure behaviour of a fire protected steel element

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