ASSESSMENT OF STABILITY OF LOAD-BEARING STRUCTURES IN NUMERICAL SIMULATIONS
Numerical calculations of the stability of building structures require development of effective criteria for evaluating results. It is advisable to evaluate the results of structural stability calculations with regard to the geometric shape of the loss of stability and purpose of the structural element. The article considers the possibility of applying a sequence of structural stability reliability coefficients in which the coefficient values are ranked in order of increasing consequences of structural failures in a building or structure's construction system. We consider an example of numerical stability calculation of a test design scheme for a steel frame of a car service building. We carried out the calculation of the stability of a test two-storey frame building system with the SCAD Office calculation package, and give the calculation results. As well we perform analysis of the first three geometric forms of stability loss of the test frame system. It is confirmed that the application of the scale of differentiated values of reliability coefficients to assess the stability of structures will allow us to achieve a higher theoretical accuracy of calculations, material capacity and reliability in the design of buildings and structures. The materials of this article can be useful in designing and improving calculation methods for building structures.