Abstract
The destruction of buildings and structures occurs as a result of natural disasters, accidents, or terorist attactacts which in many cases are accompanied by explosions.
 The action of an air shock wave on a building is characterized by a complex set of loads: excess pressure, reflection pressure, velocity pressure, leakage pressure, load from seismic waves.
 Ensuring the preservation and restoration of buildings and structures includes measures to assess the possible degree of destruction of buildings and structures. Therefore, in modern conditions, the design of buildings, structures and their elements is not possible without taking into account the dynamic effects. When designing and constructing buildings and structures, it is always necessary to take into account the resistance of structural elements to the action of damaging factors, both the explosion in general and the shock wave of the explosion in particular, which will help avoid future possible human losses.
 Therefore, the article considers the general characteristics of the processes of interaction of the air shock wave with the building, the method of calculating the time of destruction of prefabricated buildings and the main parameters of the air shock wave which flows as a result of an explosion in a building, structure with windows, doorways and openings, which arose as a result of the destruction of floor structures or walls.
 Studies have shown that the load on the structure depends on the parameters of the wave that flows through the holes in the buildings and through the holes formed by the destruction of the walls of the building, the comparison of calculated and experimental data indicates their sufficient convergence.
Highlights
The current climate change on Earth is followed by techno genic and natural calamities, while international relations are bare terrorist attacks and armed conflicts
To determine the parameters of the wave that flows into the building, taking into account the destruction of the enclosing structures, you can use the following prerequisites: the time of destruction of the building is equal to the time of destruction of its front wall; deformation of the frame of the building during the destruction of the walls is not taken into account, the dynamic load is considered to be normally applied to the surface of the front wall; the load on the front wall and its rear surface act simultaneously
Calculation analysis shows that panel rupture time when 0,3, depending on PF varies between 20 to 100 Msec, while, if pressure increases, the penetration impacts on traz decreases
Summary
The destruction of buildings and structures takes place as a result of calamities, accidents of various nature, and terrorist attacks which often include explosions. The destruction of buildings and constructions happens as a result of munitions completely penetrating structural floors or walls, after which the round explodes inside the construction, followed by the destructive impact of explosion product kinetic energy and the shock wave. In modern conditions, the design of buildings, structures and their elements is not possible without taking into account the dynamic effects. When designing and constructing buildings and structures, it is always necessary to take into account the resistance of structural elements to the action of damaging factors, both the explosion in general and the shock wave of the explosion in particular, which will help avoid future possible human losses.
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