Open AccessFeatures of modelling reinforced concrete structures in order to give fire resistance
Author(s) -
Fedor Portnov,
Sofya Kovaleva
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/869/7/072046
Subject(s) - computer science , software , certification , fire resistance , slab , work (physics) , limit (mathematics) , product (mathematics) , construct (python library) , construction engineering , reliability engineering , structural engineering , engineering , mathematics , mechanical engineering , mathematical analysis , materials science , political science , law , composite material , programming language , geometry
The work explores the problem of assessing the limits of fire resistance of modern construction structures. Existing experimental methods are a fairly accurate way of assessing and are used in the certification of construction structures. Nevertheless, a significant problem in the development of new construction structures arises the problem of the need to conduct a large number of complex and expensive tests. Calculated evaluation methods are a reasonable alternative for pre-evaluating the effectiveness of the solutions developed. However, at present such calculations do not take into account the different types of design solutions and properties of new building materials. The work provides the results of experimental and calculated methods of assessing the limits of fire resistance. The analysis of the calculation results showed that when using regulatory documents in calculating the actual limit of fire resistance, the results differ by a maximum of close to 20 minutes. Thus, it can be concluded that the data obtained by the standards may produce inflated results. Currently, there are quite a lot of software products capable of solving such problems at a high level. One of the most powerful software complexes is ANSYS. This product allows you to construct a mathematical model of the object to conduct complex engineering calculations to determine the likely failure scenarios and parameters of control of the tensely deformed state of construction structures Object. A simulation of the behavior of a reinforced concrete slab during a fire, with the help of the ANSYS program, is shown.