Research of Fire Resistance of Elements of Steel Frames of Industrial Buildings

Abstract:

The article considers and analyses the methods by which it is possible to carry out research to determine the fire resistance of elements of steel frames of industrial buildings. It is determined that it is expedient to use the means of computational fluid dynamics, which has no limitations due to the high cost, complexity, environmental friendliness and complexity in comparison with real experiments. In order to conduct the most reliable computational experiments, mathematical models of temperature and mechanical reaction to the thermal effect of fire were created, taking into account the equations of thermal conductivity, systems of differential equations of stress-strain state of solids in their numerical implementation based on the finite element method. The solution of mathematical models was carried out using computational fluid dynamics, which describes the process of heat and mass transfer in test fire furnaces during the determination of fire resistance of steel structures. According to the results of computational experiments it is shown that the limiting state of loss of bearing capacity of vertical and horizontal structures occurs due to the formation of a zone of plastic deformations taking into account the associative theory of plasticity. According to the results of computational experiments, the dependence of the limit of fire resistance on the level of applied load to structures, which is close to linear, was revealed. Based on the obtained dependences and the corresponding graphs, a technique is developed based on the use of maximum deformations of the elements with the corresponding fixation of the limit state on the loss of fire resistance in terms of bearing capacity by bending this curve.

• Periodical: Materials Science Forum (Volume 1038)
• Pages: 506-513
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1038.506
• Online since: July 2021
• Authors: Viktor Hvozd, Eugene Tishchenko, Andriy Berezovskyi, Stanislav Sidnei*
• Keywords: Fire Resistance, Mechanical Load, Standard Fire, Steel Structures

References

[1] Fire safety of construction objects. General requirements of State Construction norms B.1.1-7-2016 [Effective from 2017-06-01.]. – The Ministry of Regional Development and Construction - 2017. 35 p. (The National Standard of Ukraine).

[2] Building structures. Test method for fire resistance. General requirements. Fire safety. (ISO 834: 1975) DSTU B B.1.1-4-98 *. [Effective from 1998-10-28.] - Kyiv: Ukrarkhbudinform, 2005. 20 p. (The National Standard of Ukraine).

[3] Fire protection. Columns. Test method for fire resistance DSTU B B.1.1-14: 2007. (EN 1365-4: 1999, NEQ). [Effective from 2008-01-01.] – The Ministry of Regional Development and Construction, 2008. 9 p. (The National Standard of Ukraine).

[4] Fire protection. Beams. Test method for fire resistance DSTU B B.1.1-13: 2007. (EN 1365-3: 1999, NEQ). [Effective from 2008-01-01.] – The Ministry of Regional Development and Construction, 2008. 7 p. (The National Standard of Ukraine).

[5] DSTU-N B EN 1993-1-1: 2010 Eurocode 3. Design of steel structures. Part 1-1. General rules and rules for buildings (EN 1993-1-1: 2005 / A1: 2014, IDT). [Effective from 2013-07-01.] – The Ministry of Regional Development and Construction, 2013. 150 p. (The National Standard of Ukraine).

DOI: 10.1680/dgte3.31630

[6] DSTU-N B EN 1993-1-2: 2010 Eurocode 3. Design of steel structures. Part 1-2. General terms. Calculation of structures for fire resistance (EN 1993-1-2: 2005, IDT). [Effective from 2014-01-01.] – The Ministry of Regional Development and Construction, 2013. 98 p. (The National Standard of Ukraine).

DOI: 10.1002/9783433601570.oth1

[7] Research of integrity of fire insulation cladding with mineral wool of steel beam under fire impact // IOP Conference Series: Materials Science and Engineering, 2021, 1021(1), 012024 / Pozdieiev S., Nuianzin O., Borsuk O., Nedilko I.

DOI: 10.1088/1757-899x/1021/1/012024

[8] Improvement of the Assessment Method for Fire Resistance of Steel Structures in the Temperature Regime of Fire under Realistic Conditions // Materials Science Forum / Taras Shnal, Serhii Pozdieiev, Oleksandr Nuianzin, Stanislav Sidnei / 2020 Volume 1006 – pр. 107 – 116.

DOI: 10.4028/www.scientific.net/msf.1006.107

[9] Shnal T.M. Fire resistance and fire protection of metal structures // Textbook Lviv Polytechnic". Lviv: NTU "Lviv Polytechnic,. 2010. p.176.

[10] Heinisuo M., Laasonen M. Product modeling, part of the fire safety concept in the future for metal structures //Advanced Research Workshop, Fire Computer Modeling, Santander. (2007). pp.18-20.

[11] Pozdieiev S.V. Development of a qualified calculation method for determining the limit of fire resistance of load-bearing reinforced concrete structures. / Pozdeev S.V., Levchenko A.D. // Scientific Bulletin of the National Technical University Lviv Polytechnic". - Lviv: NTU "Lviv Polytechnic,. 2011. pp.264-269.

DOI: 10.23939/ep2021.04.264

[12] Improvement of the estimation method of the possibility of progressive destruction of buildings caused by fire // IOP Conference Series: Materials Science and Engineering, 2019, 708(1), 012067 / Pozdieiev S., Nekora O., Kryshtal T., Sidnei S., Shvydenko A.

DOI: 10.1088/1757-899x/708/1/012067

[13] Method of the calculated estimation of the possibility of progressive destruction of buildings in result of fire // MATEC Web of Conferences, 2018, 230, 02026 / Pozdieiev S., Nekora O., Kryshtal T.,Zazhoma V., Sidnei S.

DOI: 10.1051/matecconf/201823002026

[14] Research of the behavioral of the wooden beams with fire protection lining under fire loading // IOP Conference Series: Materials Science and Engineering, 2021, 1021(1), 012031/ Zmaha M.I., Pozdieiev S.V., Zmaha Y.V., Nekora O.V., Sidnei S.O.

DOI: 10.1088/1757-899x/1021/1/012031

[15] Temperature effect on the thermal-physical properties of fire-protective mineral wool cladding of steel structures under the conditions of fire resistance tests // Eastern-European Journal of Enterprise Technologies, 2020, 4(12-106), р. 39–45 / Pozdieiev S., Nuianzin O., Binetska O., Shvydenko A., Alimov B.

DOI: 10.15587/1729-4061.2020.210710