DETERMINATION OF VITALITY PARAMETERS OF PROTECTED CRITICAL ENGINEERING STRUCTURES UNDER SHOCK-WAVE LOADING

Abstract

The relevance of work is related to the trend of emergencies at oil and gas industry enterprises. In this relation, it is necessary to design reinforced concrete structures, which can be affected by intensive short-term dynamic loads of emergency shock-wave type. Taking into account the reaction of expansion during design allows revealing the hidden reserves of load-bearing capacity in bent ferro-concrete structures, as well as reducing cracking, due to the increase in rigidity. The effective way to reduce the magnitude of the dynamic impact is the use of yielding supports in the form of collapsible inserts of the annular section. Thus, the joint application of yielding supports and consideration of the spacer reaction make it possible to prevent damage, complete or partial destruction of structures. In addition, damage to the building structures of critical buildings and structures of the oil and gas complex leads to a halt in technological process, which in some cases is not only economically unprofitable, but also unacceptable, and can lead to significant material damage and loss of life. The aim of the work is to develop a methodology and algorithm for constructing energy diagram, perform a numerical assessment of using compliant supports for survivability of protected building structures under intensive loading Methods: experimental studies: reaction of input force, reaction of output force, acceleration, displacement by tensometry methods, numerical integration by Simpson method. Results. The authors have developed the technique and algorithm for constructing the averaged energy diagram and carried out the numerical assessment of using malleable supports for survivability of protected building structures of oil and gas facilities under short-term dynamic loading.

Keywords

• vitality
• protected building construction
• energy diagram
• coefficient of resultant force
• short-term dynamic loading
• shock-wave loading
• reinforced concrete
• thrust
• flexible supports
• inertial forces
• experimental studies