Results of full-scale fire test of spun reinforced concrete columns of annular section

Authors

  • Ivan I. Polevoda State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, ul. Mashinostroiteley, 25 https://orcid.org/0000-0003-2469-3553
  • Denis S. Nekhan' State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, ul. Mashinostroiteley, 25 https://orcid.org/0000-0001-7838-4663

DOI:

https://doi.org/10.33408/2519-237X.2020.4-2.142

Keywords:

full-scale fire tests, spun reinforced column, fire resistance, fire resistance limit, temperature-time curve of fire, construction heating, fragment of building, framed structural diagram of building, gas medium pressur

Abstract

Purpose. To evaluate the fire resistance of spun reinforced concrete columns of annular section under joint temperature and power load through full-scale experimental studies.

Methods. Conducting full-scale fire tests of columns as a part of a fragment of a framed building. Visual observation of the behavior of the columns during the fire test. Temperature measurement of fire gaseous medium, reinforcement, concrete on the inner surface of columns, including in the place of the connection node with monolithic overlap. The measurement of the temperature and excess pressure of the gaseous medium in the hollow of the columns.

Findings. Experimental dependences of changes in temperature of reinforcement and concrete on the inner surface of columns, including at the site of the node connection with monolithic overlap were obtained. The behavior of temperature and excess pressure change in the hollow of the columns is obtained. It was revealed that walls of spun reinforced concrete columns with free air hollow have higher rate of heating than the walls with monolithic concrete cotter in the hollow. The significant effect of increasing pressure of the gaseous medium in the hollow of the columns on their bearing capacity is not fixed. Explosive destruction of concrete of the columns during the fire tests is not fixed. The destruction of one of the columns during the fire tests occurred in the middle part of the height after the formation of main cracks, directed at an angle of 75–80° to the longitudinal axis of the construction, and increasing of bending deformation. The factual fire resistance limit of the experimental spun reinforced concrete columns of annular section with an eccentric applied load of 18.25 t was R60.

Application field of research. The results of the study can be used to determine the thermophysical characteristics of spun concrete and to develop calculation model of fire resistance of spun reinforced concrete columns of annular section.

Author Biographies

Ivan I. Polevoda, State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, ul. Mashinostroiteley, 25

Head of University; PhD in Technical Sciences, Associate Professor

Denis S. Nekhan', State Educational Establishment «University of Сivil Protection of the Ministry for Emergency Situations of the Republic of Belarus»; 220118, Belarus, Minsk, ul. Mashinostroiteley, 25

Faculty of Postgraduate Scientific Education, Adjunct

References

Nazhuev M.P., Yanovskaya A.V., Kholodnyak M.G., Stel'makh S.А., Shcherban' E.М., Osadchenko S.А. Analiz zarubezhnogo opyta razvitiya tekhnologii vibrotsentrifugirovannykh stroitel'nykh konstruktsiy i izdeliy iz betona [Analysis of foreign experience in the development of technology of vibration-centrifuged building structures and products from concrete]. The Eurasian Scientific Journal, [online], 2018. Vol. 10. No. 3, available at: https://esj.today/PDF/58SAVN318.pdf (accessed: April 10, 2020). (rus)

Pastushkov V.G., Pastushkov G.P. Opyt primeneniya tsentrifugirovannykh lineynykh elementov s poperechnymi secheniyami razlichnogo profilya pri stroitel'stve mnogoetazhnykh zdaniy [The experience of using spun linear elements with cross sections of various profiles in the construction of multi-storey buildings]. Arkhitektura i stroitel'nye nauki, 2014. Vol.18, 19, No. 1, 2. Pp. 36–38. (rus)

Nekhan' D.S., Zhamoydik S.M., Polevoda I.I. Modelirovanie progreva tsentrifugirovannoy zhelezobetonnoy kolonny s uchetom anizotropii teplofizicheskikh kharakteristik betona po secheniyu [Modeling of heating of a centrifuged reinforced concrete column taking into account anisotropy of thermophysical characteristics of concrete in cross section]. Journal of Civil Protection, 2019. Vol. 3, No 4. Pp. 366–377. (rus). DOI: 10.33408/2519-237X.2019.3-4.366.

Barnas A., Rinnhofer G. Entwicklung hochbewehrter Schleuderbetonstützen – Brandverhalten und Bemessungssoftware [Development of highly reinforced spun concrete columns – fire behavior and design software]. Zement+Beton, 2004. Pp. 16–21. (deu)

Shubin A.A. Formula industrializatsii stroitel'stva: vysokaya skorost' + nizkaya sebestoimost' = UDS [The formula for the industrialization of construction: high speed + low cost = UHS]. Tekhnologii betonov, 2013. No. 9. Pp. 32–35. (rus)

Antonova A., Molodtsova M., Molodtsova V. Framing Systems in Residential Construction. Procedia Engineering, 2016. No. 150. Pp. 2138-2145. DOI: 10.1016/j.proeng.2016.07.254.

Abramyan S.G., Gnatyuk D.V. Sbornye i sborno-monolitnye karkasnye sistemy vysotnykh zdaniy s ploskimi plitami perekrytiya [Precast and cast-in-situ frame systems of high-rise buildings with flat slabs]. Internet journal «Naukovedenie», 2017. Vol. 9, No. 1, available at: http://naukovedenie.ru/PDF/83TVN117.pdf (accessed: April 10, 2020). (rus)

Svintsov A.P., Malov A.N., Nikolenko Yu.V., Ganin A.A. Bezbalochnye zhelezobetonnye perekrytiya: osobennosti konstruktsii i tekhnologii vozvedeniya [Beam-free reinforced concrete floors: design features and construction technologies]. Structural Mechanics of Engineering Constructions and Buildings, 2009. No. 2. Pp. 74–80. (rus)

Nekhan' D.S., Kurachenko I.Yu., Olesiyuk N.M., Kreer L.A. 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: 10.33408/2519-237X.2020.4-2.130.

Downloads


Abstract views: 266
PDF Downloads: 184

Published

2020-05-15

How to Cite

Polevoda И. and Nekhan’ Д. (2020) “Results of full-scale fire test of spun reinforced concrete columns of annular section”, Journal of Civil Protection, 4(2), pp. 142–159. doi: 10.33408/2519-237X.2020.4-2.142.

Most read articles by the same author(s)