Numerical Simulation of Yielding Supports in the Form of Annular Tubes Under Static and Dynamic Loads
The extreme natural and man-made impacts on buildings have become more frequent for the past time due to the explosion of condensed explosives or explosive combustion of gas-vapor or air-coal mixtures. These accidents involve large human and economic losses and their prevention methods are not always effective and reasonable. The aim of this paper is to study the method of enhancing the explosion safety of buildings by means of yielding supports. The paper presents numerical results on strength ad deformability of yielding supports in the form of annular tubes under static and dynamic loads. The effect from yielding supports is estimated taking into account three stages of deformation, namely elastic, elasto-plastic, and elasto-plastic with hardening. It is shown that the rigidity of yielding supports significantly affects their stress-strain state. With increasing rigidity of deformable elements, the dependency between load and deformation of yielding supports in elastic and plastic stages is linear. Significant reduction is observed in relation to the dynamic response and the deformation time increases with the increase of the plastic component. Thus, it is possible to apply them as supporting units for reinforced concrete bending structures.