Justification of the Dynamics of Extra-Project Loads on Building Structures

Abstract

The paper analyzes the forms of impact of non-design loads from shock air waves on building structures. The problem of forecasting the dynamics of the explosive load on a building structure (for example, the covering of a buried structure) is solved by the simultaneous solution of the equation of the spatial distribution of excess pressure in the front of a shock air wave and the dependence of the time of its action on the speed of its front. Since the speed of the shock air wave is constantly changing, the equation of the time of the wave action has a differential form, and its solution is established on the assumption that the simultaneous action of the wave on the surface of the building structure occurs on an area that is limited by the width of the shock wave front. On the basis of this, a grapho-analytic technique for determining the spatio-temporal dependence of the change in excess pressure in the plane of the building structure at the time of impact of the shock wave was developed. This dependence is established in the form of a table or graph, which is a loading curve.