Rationality of Adapting Critical Infrastructure Buildings to Blast Effects

The article examines the approaches for adapting the frame structures of critical infrastructure facilities to withstand blast effects. A historical overview of principles and approaches regarding the installation of protective coverings is provided. The concept of multi-layer protection is discussed, wherein each individual layer performs a specific function. The article analyzes the behavior of steel under ultra-high strain rates, changes in yield strength, and the relationship between the increase in yield strength and the steel grade. Single-story frame structures of the "Kansk" type, commonly used in critical infrastructure, are considered. A system for adapting such structures to blast effects through the installation of protective screens around the facility is proposed. Principles of maintainability are outlined, allowing for the replacement of individual protective frame elements without replacing the entire system.