Bearing strength of constructions of building and building with steel framework at high temperature influences

Authors

  • I. G. Maladyika The firefighting tactics and recscue operations department, , Cherkassy Institute of Fire Safety named after Heroes of Chornobyl of National University of Civil Defense of Ukraine, Head, 8, Onoprienko st., Cherkassy, Ukraine https://orcid.org/0000-0001-8784-2814
  • I. M. Shkarabura The firefighting tactics and recscue operations department, , Cherkassy Institute of Fire Safety named after Heroes of Chornobyl of National University of Civil Defense of Ukraine, Head, 8, Onoprienko st., Cherkassy, Ukraine https://orcid.org/0000-0002-3882-7623

DOI:

https://doi.org/10.30838/P.CMM.2415.250918.305.170

Keywords:

steel structures, load-bearing capacity, power and temperature effects, parameters of the technical state of constructions, fire resistance.

Abstract

Purpose. Development of measures for providing of load-bearing capacity of steel structures of building and building at the action of power and high temperature factors, renewal of term of exploitation or necessity of change of fireproof measures opti on. Method. The analysis of the state of capital assets, technical equipment of the systems of life-support in Ukraine and emergencies which took place on them lately, testifies to their critical condition. For further safe exploitation of building and building with   steel framework it is necessary to conduct permanent diagnostics of constructions, determine the controlled parameters of constructions (d escriptions of durability and deformability of materials, bending and moving of constructions), develop the methods of calcula tion and methods of defence of constructions in accordance with the requirements of operating normative documents, including, from temperature influences.Methodical approaches are expounded in relation to the calculation of steel constructions on temperature influences. For the heating engineering calculation of separate construction take into account the location of project fire in relation to th is construction.  Results.  As development of fire results in the uneven heating, decline of descriptions of materials and destruction of load carrying structures, wall protection, warehoused properties and equipment, it is necessary to set the law of measuring of Physical and mechanical properties of materials of constructions by the corresponding alpha tests of standards of metal at heating to the different temperatures.  Scientific novelty.  Resulted suggestion in relation to determination of calculation bearing strength of steel constructions at the united action of power and temperature factors, given suggestion on the ground of possi bility of their further exploitation. The calculations of constructions must be conducted taking into account the changing at heating deformed state and Physical and mechanical properties of materials of elements of constructions.  Practical meaningfulness.  The offered methodology allows to decide next tasks: to work out the complex of associate measures in relation to determination of parameters of the tensely-deformed state at the united action of power and temperature factors; to set the sizes of parameters and criteria of the technical state of steel constructions, building and building on the whole on results calculations; to work out models and methods of calculation of t he tensely-deformed state which arises up during development of fire.

Author Biographies

I. G. Maladyika, The firefighting tactics and recscue operations department, , Cherkassy Institute of Fire Safety named after Heroes of Chornobyl of National University of Civil Defense of Ukraine, Head, 8, Onoprienko st., Cherkassy

Ph.D. (Tech.), Assoc. Prof

I. M. Shkarabura, The firefighting tactics and recscue operations department, , Cherkassy Institute of Fire Safety named after Heroes of Chornobyl of National University of Civil Defense of Ukraine, Head, 8, Onoprienko st., Cherkassy

Postgraduate Student

References

Stalevi konstruktsii. Normy proektuvannia: DBN V.2.6-198:2014. Ofits. vyd. K. : Minrehionbud Ukrainy Kyiv, 2014. 199 s. – (Derzhavni budivel'ni normy Ukrainy).

Navantazhennia i vplyvy. Normy proektuvannia : DBN V.1.2-2:2006. Ofits. vyd. K. : Minbud Ukrainy, 2006. 60 s. (Systema zabezpechennia nadijnosti ta bezpeky budivel'nykh ob'iektiv. Derzhavni budivel'ni normy Ukrainy).

Pozhezhna bezpeka ob'iektiv budivnytstva. Zahal'ni vymohy : DBN V.1.1-7:2016. Ofits. vyd. – K. : Minrehion Ukrainy, 2017. 35 s. (Derzhavni budivel'ni normy Ukrainy).

Budivel'ni konstruktsii. Metody vyprobuvan' na vohnestijkist'. Zahal'ni vymohy : DSTU B V.1.1-4-98*. Ofits. vyd. K. : Derzhbud Ukrainy, 2005. 19 s. (Zakhyst vid pozhezhi. Natsional'nyj standart Ukrainy).

Proektuvannia stalevykh konstruktsij. Rozrakhunok konstruktsij na vohnestijkist' : DSTU-N B V.2.6-211:2016. Ofits. vyd. K. : Minrehionbud Ukrainy, 2016. 147 s. (Natsional'nyj standart Ukrainy).

Mosalkov Y. L. Ohnestojkost' stroytel'nykh konstruktsyj [Fire resistance of building structures]. Y. L. Mosalkov, H. F. Pliusnyna, A. Yu. Frolov. M. : Spetstekhnyka, 2001. 484 s.

Kolony. Metod vyprobuvannia na vohnestijkist': DSTU B V.1.1-14:2007 (EN 1365-4:1999, NEQ). Ofits. vyd. – K. : Minrehionbud Ukrainy, 2007. 20 s. (Natsional'nyj standart Ukrainy).

Balky. Metod vyprobuvannia na vohnestijkist': DSTU B V.1.1-13:2007 (EN 1365-3:1999, NEQ). Ofits. vyd. K.: Minrehionbud Ukrainy, 2007. 10 s. (Natsional'nyj standart Ukrainy).

Vohnezakhysni pokryttia dlia budivel'nykh nesuchykh metalevykh konstruktsij. Metod vyznachennia vohnezakhysnoi zdatnos-ti: DSTU B V.1.1-17:2007 (ENV 13381-4:2002, NEQ). Ofits. vyd. K.: Minrehionbud Ukrainy, 2007. 65 s. (Natsional'nyj standart Ukrainy).

Maladyka I.H. Praktychni metody vyznachennia vohnestijkosti stalevykh konstruktsij [Practical methods for the designation of steel constructions]. I.H. Maladyka, I.M. Shkarabura. Zbirnyk naukovykh prats' Donbas'koho derzhavnoho tekhnichnoho universytetu. – Lysychans'k: Vyd-vo DonDTU, 2017. Vyp. 47. S. 74–80.

Holodnov O.I. Pro neobkhidnist' rozrakhunku budivel' zi stalevym karkasom na temperaturni vplyvy [On the need to calculate buildings with a steel frame for temperature effects] . O.I. Holodnov, T.V. Antoshyna ta in. Zbirnyk naukovykh prats' Ukrains'koho instytutu stalevykh konstruktsij imeni V.M. Shymanovs'ko-ho. K.: Vydavnytstvo «Stal'», 2017. №20. S. 65–84.

Otsinka tekhnichnoho stanu stalevykh budivel'nykh konstruktsij, scho ekspluatuiut'sia : DSTU B V.2.6-210: 2016. Ofits. vyd. K. : Minrehion Ukrainy, 2016. 53 s. (Natsional'nyj standart Ukrainy).

Published

2018-09-25

Issue

Section

Life Safety