MODELING THE THERMAL STRESS STATE OF THE FOUNDATION AND DEVELOPMENT OF MEASURES
Abstract and keywords
Abstract (English):
The modeling of the thermal stress state of the foundation slab of the building of a general educational institution is considered. The performed calculations took into account the occurrence of stresses as a result of heating of the concrete mass during cement hydration. To simulate the thermal stress state, the specialized Midas Fea software package is used. At control points, diagrams of changes in temperatures, stresses, and crack formation coefficients depending on the periods of curing are obtained. The isopoles of temperature distribution and crack formation coefficients over the volume of the studied array were obtained. Measures have been developed to improve the operational properties of concrete, including engineering and technical recommendations to reduce the negative impact of temperature differences on the manufacturing process of concrete mixtures and foundations.

Keywords:
Modeling, concrete foundation, thermal stress state, cement hydration, temperature variation diagrams, crack formation coefficients, measures.
References

1. SP 63.13330.2018. Betonnye i zhelezobetonnye konstrukcii. Osnovnye polozheniya.

2. CEB-FIP Model Code 1990. Design Code // Comite Euro-International du Beton. - 1991. - 437 p.

3. Benin, A.V. Matematicheskoe modelirovanie processa razrusheniya scepleniya armatury s betonom. Ch. 1. Modeli s uchetom nesploshnosti soedineniya / A.V. Benin, A.S. Semenov, S.G. Semenov, B.E. Mel'nikov // Magazine of Civil Engineering. - 2013. - № 5. - Pp. 86-99.

4. Nikolenko, S. D. Eksperimental'noe issledovanie raboty fibrobetonnyh konstrukciy pri znakoperemennom malociklovom nagruzhenii / S. D. Nikolenko, G. N. Stavrov // Izvestiya vysshih uchebnyh zavedeniy. Stroitel'stvo i arhitektura. - 1986. - № 1. - S. 18-22.

5. Vereschagin, A. Yu. Programma geotehnicheskogo monitoringa ob'ektov, vhodyaschih v zonu vliyaniya stroitel'stva / A. Yu. Vereschagin, S. D. Nikolenko, S. A. Sazonova // Modelirovanie sistem i processov. - 2019. - T. 12, № 4. - S. 4-9.

6. Ignatyuk, A. S. Process teplovizionnogo obsledovaniya ograzhdayuschih konstrukciy zdaniya / A. S. Ignatyuk, S. D. Nikolenko, S. A. Sazonova // Modelirovanie sistem i processov. - 2019. - T. 12, № 4. - S. 66-72.

7. Mihnevich, I. V. Issledovanie vliyaniya teplovogo vozdeystviya na prochnostnye harakteristiki betona / I. V. Mihnevich, S. D. Nikolenko // Nauchnyy zhurnal stroitel'stva i arhitektury. - 2017. - № 3 (47). - S. 43-51.

8. Nikolenko, S. D. Osobennosti tehnologicheskih shem prigotovleniya fibrobetona / S. D. Nikolenko, A. N. Tkachenko, D. V. Fedulov // Aktual'nye problemy sovremennogo stroitel'stva : sbornik materialov Mezhdunarodnoy nauchno-tehnicheskoy konferencii. - Penza, 2007. - S. 320-323.

9. Nikolenko, S. D. Matematicheskoe modelirovanie dispersnogo armirovaniya betona / S. D. Nikolenko, S. A. Sazonova, V. F. Asminin // Modelirovanie sistem i processov. - 2019. - T. 12, № 1. - S. 74-79.

10. Behaviour of concrete with a disperse reinforcement under dynamic loads / S. D. Nikolenko, E. A. Sushko, S. A. Sazonova, A. A. Odnolko, V. Ya. Manokhin // Inzhenerno-stroitel'nyy zhurnal. - 2017. - № 7 (75). - S. 3-14.

Login or Create
* Forgot password?