Slovinskyi V. An improvement of method of tests on the fire-resistance of reinforce-concrete columns

Work is sanctified to the decision of actual scientific and technical task of improvement of method of fire tests of reinforce-concrete columns on a fire-resistance by the ground of terms of realization of experiment in default of the mechanical loading and calculation interpretation of his results on the basis of mathematical models of the tensely-deformed state of reinforce-concrete column in the conditions of heating. The methods of determination of the temperature fields are worked out on taking temperature in control points by interpolation, and among them a method that has most exactness at most stability of computational algorithms of interpolation is educed, based on close isotherms in the section of column at temperature influence on the standard temperature condition of fire. The experimental is worked out and mathematical bases of method of fire tests on the fire-resistance of reinforce-concrete columns without the mechanical loading, where the ground of technical requirements enters to the terms of testing and her metrology providing, description of mathematical vehicle for interpolation of the temperature fields in a section, and also estimation of authenticity of this method. It is shown that the improved method allows substantial character to bring down a cost and трудозатраты during testing on the fire-resistance of reinforce-concrete columns of square section.