Fire resistance of spun reinforced concrete columns
Keywords:spun concrete, coefficient of concrete working conditions in case of a fire, full-scale fire tests, fire resistance limit, calculation method, static calculation, heat engineering calculation, brittle explosive destruction of concrete
Purpose. On the basis of experimental and theoretical studies to study the fire resistance of reinforced concrete columns made by spinning.
Methods. Experimental and theoretical studies of physical, mechanical and thermophysical characteristics of spun concrete under normal conditions and at high temperature heating. Full-scale test of spun reinforced concrete columns under joint temperature and static loads. Analytical solution of thermal and static problem of fire resistance of spun reinforced concrete columns. Simulating based on Ansys Workbench and LIRA-SAPR platforms.
Findings. The difference in the physical and mechanical characteristics of spun concrete in the cross-section of structures of a given thickness under normal conditions, as well as the difference in their relative change during high-temperature heating are revealed. Experimental dependences of working factor conditions of spun concrete at a fire have been established. A reduced tendency of spun concrete to brittle explosive destruction at a fire was revealed in relation to vibrated concrete. The influence of the heterogeneity of centrifuged concrete in the cross-section of the products, the thinness of the walls and the air cavity of the products on their fire resistance has been established. The destruction mechanism of spun reinforced concrete columns in case of fire has been established experimentally, and their behavior in case of fire has been studied. A reduced tendency of spun concrete to explosive destruction at a fire was revealed in relation to vibrated concrete. A method for calculating fire resistance limits of spun reinforced concrete columns has been developed. A tabular method for estimating the fire resistance of a series of spun reinforced concrete columns has been developed.
Application field of research. The results of the study can be used for the estimation of fire resistance limits of spun concrete columns, as well as for the development of amendments to technological regulations in the field of estimation of fire resistance of spun concrete structures.
Kazachek V.G., Lazovskij D.N., Rak N.A., Tur V.V. Shagaya v nogu so vremenem [Keeping pace with the times]. Vestnik Polockogo gosudarstvennogo universiteta, 2014. No. 16. Pp. 111–113. (rus)
Palevoda I.I, Zhamoydik S.M., Nekhan' D.S., Batan D.S. Issledovanie fiziko-mekhanicheskikh svoystv tsentrifugirovannogo betona [Study of Physical and Mechanical Properties of Centrifuged Concrete]. Science and Technique, 2019. Vol. 18, No. 4. Pp. 319–329. (rus). DOI: https://www.doi.org/10.21122/2227-1031-2019-18-4-319-329.
Nekhan' D.S. Fizicheskie i teplofizicheskie kharakteristiki tsentrifugirovannogo betona v tonkostennykh konstruktsiyakh [Physical and thermal characteristics of spun concrete in thin-walled structures]. Proc. III Intern. scientific-practical conf. «Aktual'nye problemy i tendentsii razvitiya tekhnosfernoy bezopasnosti v neftegazovoy otrasli», Ufa, December 2, 2020. Ufa State Petroleum Technical University. Ufa, 2020. Pp. 25–27. (rus)
Palevoda I.I, Nekhan' D.S., Batan D.S. Povedenie tsentrifugirovannogo betona pri pozhare [Behavior of Centrifuged Concrete in Case of Fire]. Journal of Civil Protection. 2018. Vol. 2, No. 4. Pp. 455–469. (rus). DOI: https://www.doi.org/10.33408/2519-237X.2018.2-4.455.
Palevoda I.I, Nekhan' D.S., Batan D.S. Issledovaniya temperatury gazovoy sredy pri provedenii naturnykh ognevykh ispytaniy stroitel'nykh konstruktsiy [Temperature studies of the gaseous medium during full-scale fire tests of building constructions]. Journal of Civil Protection. 2020. Vol. 4, No. 2. Pp. 130–141. (rus). DOI: https://www.doi.org/10.33408/2519-237X.2020.4-2.130.
Palevoda I.I., Nekhan' D.S. Rezul'taty naturnykh ognevykh ispytaniy tsentrifugirovannykh zhelezobetonnykh kolonn kol'tsevogo secheniya [Results of full-scale fire test of spun reinforced concrete columns of annular section]. Journal of Civil Protection, 2020. Vol. 4. No. 2. Pp. 142–159. (rus). DOI: https://www.doi.org/10.33408/2519-237X.2020.4-2.142.
Bushev V.P., Pchelintsev V.A., Fedorenko V.S., Yakovlev A.I. Ognestoykost' zdaniy [Fire resistance of buildings]. Moscow: Stroyizdat, 1970. 262 p. (rus)
Milovanov A.F. Stoykost' zhelezobetonnykh konstruktsiy pri pozhare [Resistance of reinforced concrete structures in case of fire]. Moscow: Stroyizdat, 1998. 304 p. (rus)
Yakovlev A.I. Raschet ognestoykosti stroitel'nykh konstruktsiy [Calculation of fire resistance of building structures]. Moscow: Stroyizdat, 1988. 143 p. (rus)
Palevoda I.I., Nekhan' D.S. Opredelenie parametrov teploobmena mezhdu vnutrenney poverkhnost'yu zhelezobetonnykh kolonn kol'tsevogo secheniya i gazovoy sredoy v ikh polosti dlya resheniya teplotekhnicheskoy zadachi ognestoykosti [Determination of heat transfer parameters between the inner surface of annular-section columns and gaseous medium in their hollow for solving the thermal problem of fire resistance]. Proc. XV Intern. scientific-practical conf. «Pozharnaya i avariynaya bezopasnost'», Ivanovo, November 17–18, 2020. Ivanovo Academy of the State Fire Service EMERCOM of Russia. Ivanovo, 2020. Pp. 349–352. (rus)
Palevoda I.I., Nekhan' D.S. Resheniye teplotekhnicheskoy zadachi ognestoykosti tsentrifugirovannykh zhelezobetonnykh kolonn [A solution to the thermal problem of fre resistance of spun reinforced concrete columns]. Fire and Explosion Safety, 2021. Vol. 30. No. 2. Pp. 49–70. (rus). DOI: https://www.doi.org/10.22227/PVB.2021.30.02.49-70.
Nekhan' D.S., Palevoda I.I. Ognestoykost' szhato-izgibaemykh tsentrifugirovannykh zhelezobetonnykh konstruktsiy [Fire resistance of compressed-bend spun reinforced concrete structures]. Proc. XV Intern. scientific-practical conf. «Obespechenie bezopasnosti zhiznedeyatel'nosti: problemy i perspektivy», Minsk, April 7–8, 2021. University of Civil Protection of the MES of the Republic of Belarus. Minsk, 2021. Pp. 211–213. (rus)
Nekhan D.S. Raschet temperaturnogo polya v sechenii polykh zhelezobetonnykh kolonn, obogrevaemykh po vsemu naruzhnomu perimetru [Calculation of the temperature of hollow reinforced concrete columns heated along the entire outer perimeter]. Proc. All-Russian scientific-practical conf. «Aktual'nye problemy i innovatsii v obespechenii bezopasnosti», Ural, December 14–16, 2020. Ural Institute of State Fire Service EMERCOM of Russia. Ekaterinburg, 2021. Pp. 122–127. (rus)
Kudryashov V.A., Zhamoydik S.M., Kurachenko I.Yu., Nguyen T.K. Rezul'taty naturnykh ognevykh ispytaniy zhelezobetonnogo monolitnogo perekrytiya v sostave eksperimental'nogo fragmenta karkasnogo zdaniya [Results of full-scale fire tests of the monolithic reinforced concrete slab as part of a fragment of a frame building]. Journal of Civil Protection. 2021. Vol. 5, No. 1. Pp. 49–66. (rus). DOI: https://www.doi.org/10.33408/2519-237X.2021.5-1.49.
Batashev V.M. Prochnost', treshchinostoykost' i deformatsii zhelezobetonnykh elementov s mnogoryadnym armirovaniem [Strength, crack resistance and deformation of reinforced concrete elements with multi-row reinforcement]. Kiev: Budivel'nik, 1978. 120 p. (rus)
Nekhan' D.S., Palevoda I.I. Vpliv nadlishkovogo tisku gazovogo seredovishcha v porozhnini tsentrifugovanikh zalіzobetonnikh konstruktsіy na їkh nesuchu zdatnіst' pri pozhezhі [Influence of excess pressure of gaseous medium in cavities of centrifuged reinforced concrete structures on their bearing capacity in case of fire]. Proc. XII Intern. scientific-practical conf. «Teorіya і praktika gasіnnya pozhezh ta lіkvіdatsії nadzvichaynikh situatsіy», Cherkasy, April 8–9, 2021. Cherkasy Institute of Fire Safety named after the Heroes of Chernobyl of the National University of Civil Defense of Ukraine. Cherkasy, 2021. Pp. 201–203. (ukr)
Abstract views: 317 PDF Downloads: 142
How to Cite
Copyright (c) 2021 Polevoda I.I., Nekhan' D.S.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.