Fire protection of steel structures with slab material PYRO-SAFE AESTUVER T

Providing required (statutory) parameters of fire resistance of R 60-R 180 steel beam structures involved in ensuring the overall sustainability of buildings and structures is not possible without the use of structural fire protection. Widespread method of structural fire protection involves the use of plate materials. The use of this type of fire protection allows for the production of works without the use of “wet processes”, which is very important for the Far North with a short period of time of positive temperatures. Fire-retardant treatment of steel structures with plate materials may also be carried out without stopping the production process in the reconstruction of buildings and structures. One of the members of the group of fire retardant materials are slabs PYRO-SAFE AESTUVER T, whose composition as a filler includes perlite, glass fiber, and as a binder - cement. The article describes current research aimed at obtaining baseline data to determine fire retardant efficiency of slabs PYRO-SAFE AESTUVER T and features of the calculation of fire resistance of coated steel rod elements in order to ensure regulatory requirements for fire resistance. The studies of fire resistance performance of coatings for steel structures allowed us to obtain the variation of thermal conductivity and heat capacity of fire retardant material, when impacted by fire. To obtain these dependencies, fire tests of steel-lined columns were conducted on the bench equipment for fire tests of building structures on the experimental base of VNIIPO of Emercom of Russia (All-Russian Research Institute for Fire Protection of Ministry of Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters). Parameters of cladding, such as density, humidity, emissivity, thermal conductivity and thermal capacity under normal conditions were taken from reference literature. Then, in the presence of experimental data, thermo-physical characteristics (thermal conductivity and heat capacity) of the material at elevated temperatures were calculated with a computer program by solving the inverse heat conduction problem. The obtained parameters of the thermal characteristics for a given flame retardants, allowed to construct warm-up nomograms of unlimited steel plates, depending on the thickness of the steel and the thickness of cladding with PYRO-SAFE AESTUVER T slabs. As a result of the research, the obtained nomograms of fire resistance of steel structures with PYRO-SAFE AESTUVER T fire protection plates may be used for the design of passive fire protection systems at construction sites. In combination with the calculation method, these nomograms allow to reduce the usage of fire-retardant material in cladding thereby increasing the economic efficiency of fire protection of this type. In Federal State Budgetary Establishment VNIIPO the “Instruction on the calculation of the actual limit of fire resistance of steel structures with fire-retardant frameless facings made of PYRO-SAFE AESTUVER T slabs” was developed.

огнезащитное покрытие, стальные конструкции, огнестойкость, потеря несущей способности, конструктивная огнезащита, огнезащитная эффективность, стандартный температурный режим, fire protection coating, steel structures, fire resistance, loss of the bearing capacity, structural fire protection, fire-retardant efficiency, standard temperature range

1. Яковлев А. И. Расчет огнестойкости строительных конструкций.-М. : Стройиздат, 1988.-143 c.

2. Хасанов И. Р., Гравит М. В., Косачев А. А., Пехотиков А. В., Павлов В. В. Гармонизация европейских и российских нормативных документов, устанавливающих общие требования к методам испытаний на огнестойкость строительных конструкций и применению температурных режимов, учитывающих реальные условия пожара // Пожаровзрывобезопасность.-2014.-Т. 23, № 3. -С. 49-57.

3. Бартелеми Б., Крюппа Ж. Огнестойкость строительных конструкций / Пер. с франц. - М. : Стройиздат, 1985.-215 с.

4. Собурь С. В. Огнезащита материалов и конструкций. -М. : ПожКнига, 2008. -200 с.

5. Голованов В. И., Пехотиков А. В., Павлов В. В. Расчет огнестойкости конструкций из стали с повышенными показателями огнестойкости для объектов нефтегазовой промышленности // Территория Нефтегаз. -2007.-№ 4. -С. 72-77.

6. Moore D. B., Lennon T. Fire engineering design of steel structures // Progress in Structural Engineering and Materials. -1997.-Vol. 1, No. 1. -P. 4-9. DOI: 10.1002/pse.2260010104.

7. Dehn F., Werther N., Knitl J. GroЯbrandversuche fьr den City-Tunnel Leipzig // Beton- und Stahlbetonbau.- 2006.-Vol. 101, No. 8.-P. 631-636. DOI: 10.1002/best.200608186.

8. Ройтман В. М., Голованов В. И. Необходимость технического регулирования огнестойкости зданий с учетом возможности комбинированных особых воздействий с участием пожара // Пожарная безопасность. -2014.-№ 1. -С. 86-93.

9. Леннон Т., Мур Д. Б., Ван Ю. К., Бейли К. Г. Руководство для проектировщиков к EN 1991-1-2, 1992-1-2, 1993-1-2 и 1994-1-2. Справочник по проектированию противопожарной защиты стальных, сталежелезобетонных и бетонных конструкций зданий и сооружений в соответствии с Еврокодами. -М. : МГСУ, 2012.-196 с.

10. Kordina K. Brдnde in unterirdischen Verkehrsanlagen // Bautechnik. - 2003. - Vol. 80, No. 5. - P. 327-338. DOI: 10.1002/bate.200302620.

11. Schneider U. Festigkeits- und Verformungsverhalten von Beton unter stationдrer und instationдrer temperaturbeanspruchung // Bautechnik. -1977. -No. 4. -P. 123-132.

12. WuB., Yuan J., Wang G. Experimental Study on the mechanical properties ofHSCafter high temperature // Chinese Journal of Civil Engineering. -2000. -Vol. 33(2).-Р. 8-15.

13. Голованов В. И., Кузнецова Е. В. Эффективные средства огнезащиты для стальных и железобетонных конструкций // Промышленное и гражданское строительство.-2015.-№ 9.-С. 82-90.