Effect of Residual Deformation of a Steel Column on its Fire Resistance under Combined Exposure "Explosion-Fire"

Vasilchenko, Alexey; Doronin, Evgeny; Иванов, Б. В.; Konoval, Volodymyr

doi:10.4028/www.scientific.net/msf.968.288

Cited by 10 publications

(10 citation statements)

References 8 publications

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“…If one uses a simplified idea based on the results reported in [8,18], according to which the loss of fire resistance for steel structures is registered on the basis of the criterion of the occurrence of a critical temperature of 500 °C, then, without the fire protection, the beam does not correspond to the class of fire resistance R60. Otherwise, when using a fire protection system based on mineral-wool cladding, the beam under study corresponds to this class of fire resistance.…”

Section: The Results Of Calculating the Beam Temperature In The Fire According To The Simplified Methodsmentioning

confidence: 99%

“…The basic principles of testing, in general, are described. A more detailed description of the main aspects of beam fire tests is given in [8]; for testing columns -in work [9]. This temperature regime is determined by the standard temperature curve of a fire corresponding to a logarithmic dependence.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The non-stationary thermal conductivity equation is solved using a finite-element method (FEM) using the ANSYS APDL software package [10,17]. In accordance with the recommendations of the standards presented in works [1][2][3][4][5][6][7][8][9], the calculations were carried out using the standard fire temperature regime, which is determined from the following formula:…”

Section: Tablementioning

confidence: 99%

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Thermal effect of a fire on a steel beam with corrugated wall with fireproof mineral-wool cladding

Nekora

Sidnei

Shnal

et al. 2021

EEJET

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This paper reports a study into the possibility of applying a simplified approach, recommended by standards for conventional steel beams, to determine the heating temperature under the conditions of a fire in relation to steel I-beams with a corrugated wall. The research is predetermined by the limitation of methods that make it possible to determine the heating temperature of this type of beam in a fire using engineering methods with a small amount of calculations. Technical data on steel beams with cladding have been considered for calculation, the features of heat impact of fire on them have been analyzed, a calculation procedure has been devised, the estimation schemes have been built, and the calculations have been performed. Data on the temperature distribution in the cross-sections of beams with and without cladding were obtained by using a simplified method recommended by standards and the refined method based on a finite-element method. Mathematical models have been constructed for calculations that describe the effect of a standard temperature regime of fire on the distribution of temperature in each minute in the cross-sections of steel beams with and without cladding. The models have been described on the basis of the differential equation of thermal conductivity, boundary conditions of the third kind, which take into consideration convective and radiant heat transfer. It was established that the mineral wool cladding of the beam with a corrugated wall is a reliable fire protection agent. The heating temperature of the beam does not reach a critical value of 500 °C in 60 minutes, which provides the class of this beam with the most stringent requirements for its fire resistance in accordance with the classification in line with the acting norms in Ukraine. The simplified method, recommended by the current standards of the European Union and Ukraine, could be effectively used to analyze the fire resistance of these beams and is the basis of the procedure for the estimated assessment of the fire resistance of these structures

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Section: The Results Of Calculating the Beam Temperature In The Fire According To The Simplified Methodsmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Tablementioning

confidence: 99%

See 1 more Smart Citation

Thermal effect of a fire on a steel beam with corrugated wall with fireproof mineral-wool cladding

Nekora

Sidnei

Shnal

et al. 2021

EEJET

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“…At many hazardous operations industrial facilities (HIF), technological processes are carried out with substances that, under certain conditions, can explode and cause a fire. Therefore, the building structures of such facilities should be designed taking into account the danger of accidental explosions, and also correspond to the required degree of fire resistance [1,2,3,4].…”

Section: Introductionmentioning

confidence: 99%

Features of Evaluation of Fire Resistance of Reinforced Concrete Ribbed Slab under Combined Effect "Explosion-Fire"

Vasilchenko

Danilin

Lutsenko

et al. 2021

MSF

Self Cite

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Calculations using the example of a reinforced concrete ribbed slab have shown that if, as a result of an explosion, due to cracks that have arisen, a part of the compressed concrete layer is turned off, then even while maintaining the bearing capacity of the slab, its fire resistance is significantly reduced. It is shown that on the basis of the proposed methodology for studying the behavior of bending elements under the combined effect of "explosion-fire", it is possible to take into account the necessary parameters of reinforced concrete ribbed slabs in the design and operation of structures of hazardous operations industrial facilities. Also, the proposed technique makes it possible to predict a relatively safe amount of explosive in the technological process of an hazardous operations industrial facility, without leading to catastrophic consequences.

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“…Results of various numerical approaches were presented, motivated by the events of 9/11 and the collapse of the World Trade Center steel-concrete composite structure. Forni et al [60] and Vasilchenko et al [61] deal with the effect of fire and blast on steel columns. Fang et al [62], [63] deal with numerical simulations of the effect of fire and blast on steel beams and columns.…”

Section: State Of the Art Fire And Blast Resistancementioning

confidence: 99%

Performance of cementitious composites subjected to combined fire and blast loading

Horníková

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This thesis is focused on the study of influence of the material properties of different types of concrete on the resistance to fire and blast loading. The interaction of fire and blast loading has not yet been quantified so far in any way. The aim of this thesis is to quantify this interaction based on an original experimental program. Mainly focusing on the properties of the materials studied, the original experimental program is divided into three main parts. In the first part, the material properties of five materials are determined as a function of the elevated temperature. The determined properties are: bulk density, porosity, thermal conductivity, specific heat capacity, permeability, and compressive strength. In the second part of the experimental program, specimens of three materials are subjected to fire and subsequent blast loading. The specimens are subjected to an elevated temperature of 400 °C, followed by near blast using 40 g of Semtex at a distance of 30 mm from the specimen. The result of these experiments is the level of damage to the specimens and the velocity of the flying debris (soffit velocity) measured using Photonic Doppler velocimetry. In the last part of the experimental program, a numerical simulation of the experiments is performed. the numerical analysis is performed for only the reference material. Within this part, both the change of the mechanical properties by elevated temperature and the blast is simulated. The result is the velocity of the flying debris (soffit velocity) and a comparison of the shock wave propagation velocity through the specimen. As a result of the undertaken experimental program, a trend of behavior is determined, where the main parameter influencing the behavior of concrete elements subjected to fire and subsequent blast loading seems to be the tensile strength. Tensile strength decreases quickly with increasing temperature and is also a key property for the element's resistance to blast.

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Effect of Residual Deformation of a Steel Column on its Fire Resistance under Combined Exposure "Explosion-Fire"

Cited by 10 publications

References 8 publications

Thermal effect of a fire on a steel beam with corrugated wall with fireproof mineral-wool cladding

Thermal effect of a fire on a steel beam with corrugated wall with fireproof mineral-wool cladding

Features of Evaluation of Fire Resistance of Reinforced Concrete Ribbed Slab under Combined Effect "Explosion-Fire"

Performance of cementitious composites subjected to combined fire and blast loading

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