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Registration Number

0214U005493, 0113U002073 , R & D reports

Title

Development of scientific bases of calculation beamless slabs with punching, which are subject to fire exposure fire

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Head

Fomin Stanislav Leonidovich, Доктор технічних наук

Registration Date

11-02-2015

Organization

Kharkiv National University of Civil Engineering and Atchitecture

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Object of study - processes of formation and distribution of temperature stress-strain state of reinforced concrete buildings in case of fire. Subject of investigation - fire resistance of reinforced concrete floor slabs bezbalkovyh monolithic frame buildings with bezryhelnymy considering shear strength and bursting with fire exposure. Aim: To develop scientific statements calculating shear strength of reinforced concrete floor slabs at bezbalkovyh bursting experiencing fire exposure fire. Methods - analytical and numerical methods for solving problems of building physics and structural mechanics using computer technology, experimental research. Scientific novelty: - First obtained three-dimensional temperature field in fragments monolithic buildings with bezryhelnoho frames for all classes of fire resistance of 30, 60, 90, 120, 180 and 240 minutes; - The features of monolithic reinforced concrete buildings with bezryhelnymy frames, which are to a significant increase in transverse strength when exposed to fire; - Improved technique for experimental research on concrete slabs bursting when heated .; - Found a new phenomenon stress state redistribution effects of temperature in the area of the intersection of columns and slabs. the main factor is temperature fracture point; - Refined technique that involves the use of nonlinear methods not only in assessing the strength of cross sections elements and structures under static calculation as a whole; - First developed and manufactured by the original setting for testing concrete slabs to bursting when heated, through which experimentally established a number of new features to push for concrete structures; - First discovered two stages of plates in the presence of upper and lower longitudinal reinforcement in the process of bursting .; - Developed a method for estimating the limiting condition of the pilot test. The practical significance of the results is that the developed method allows to increase the reliability calculation monolithic concrete structures, develop rational design solutions equipped with fire below. The results introduced in preparing the draft ISO-H B.2.6 B-XX: 200X design of reinforced concrete structures. The main provisions. Fire resistance. As well as the design and construction of 19-storey house on the street. Sukhumi m.Kharkov.

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Бутенко Сергій Володимирович
Грицай Микола Васильович
Плахотнікова Ірина Анатоліївна
Резнік Петро Аркадійович
Фомін Станіслав Леонідович

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2020-04-02