PHYSICAL FACTORS OF THE INFLUENCE THE EXPLOSION ON ENCLOSURE GLASS STRUCTURES. OVERVIEW OF TESTING METHODS

Abstract

The article examines the main physical parameters of an explosive wave, the properties of explosive loads, as well as the peculiarities of the propagation of waves in space and their dynamic influence on enclosing structures, including translucent The considered temporal and spatial conditions under which the formation of the quasi-flat front of the blast wave takes place and the blast loads can be considered as uniformly distributed along the vertical plane. If the distance to the explosive charge exceeds half of the value of the width and height of the structure or its element (provided that the charge is located in the center of the structure or element), then the load on them can be considered approximately averaged by area. The thermophysical factors of influence, which the building structure must withstand, are analyzed. The main differences of explosive and shock effects from static loads, which are taken into account during construction design, are described. The main real-time methods of determining the parameters of the blast wave in real time and the factors of its destructive effect on the elements of the enclosing structures of buildings are considered. The determination of the critical pressure for a specific structure is tied to the determination of the critical distance at which the structure will not withstand the destructive impact of the shock wave. The main real-time methods of determining the blast wave parameters in real time are considered. It was determined that the use of the shock tube method is rational for conducting research in laboratory conditions. The work was carried out with the assistance of the National Research Fund of Ukraine. The materials of the article contain scientific results obtained as part of the implementation of the project No. 208/0172 "Aerodynamics, heat exchange and innovations to increase the energy efficiency of window structures and their use for the reconstruction of war-damaged buildings of Ukraine" of the competition "Science for the reconstruction of Ukraine in the war and post-war periods".