Calculation of Buildings and Structures for Air Blasts Using Explosion Accelerograms

This article introduces a novel approach to calculating buildings and structures for the impact of air blasts. We showcase the use of modern calculation methods such as direct integration of equations of motion, shock impulse method, and quasi-static method. Our innovative method, utilizing explosion accelerograms, proposes a new way to assess the elastic-strain state of the frames of buildings and structures under the action of shock airwaves. We derive the horizontal accelerations of the earth’s surface oscillations from the verified known dependences of the vertical velocity of the earth’s surface on the value of the pressure from the explosion. The key advantages of our method are its simplicity, validity of the physical essence of the air blast, ability to assess the impact of the blast wave of a specific type of ammunition, sufficient accuracy for engineering calculations, and consideration of the geological characteristics of the site. Our method allows for the calculation of the stress-strain state of the frames of buildings and structures using accelerograms of explosions with the use of most software packages for which the possibility of taking into account seismic effects using accelerograms is implemented. We verify our method by comparing it with the impulse method of calculation.