Progressive collapse evaluation in industrial building of existing production

The problem of analysis of the resistance to the progressive collapse of the bearing steel framework of industrial building of existing production with a complex structural form with a service life of about 50 years is considered in this article. The main goal was to determine the approaches to such analysis and to identify the degree of survivability of the building. Probable emergency situations associated with the actual condition of steel structures, as well as with new and existing technological processes occurring in the industrial workshop were defined. Under the identified scenarios of emergency situations, the possibility of local damage of steel structures and their individual elements was determined. The extent of the impact of emergency situations on bearing steel structures has been determined. The main provisions for the analysis are presented. As a result, the level of sustainability of the industrial building framework to progressive collapse was defined. As a conclusion, the suggested approaches for performing similar analyses of existing industrial buildings are presented. Also the use of measures to prevent possible damage of structures and accidents, as well as to reduce financial costs during technological renovations without reducing the level of reliability and survivability are justified.