Bearing Capacity of Compressed Reinforced Concrete Elements under Combined Special Effects

Abstract

There are a number of environmental factors that over time reduce the resistance of the structure and, as a consequence, its physical and mechanical characteristics, causing an increase in the risk of damage or failure. For reinforced concrete structures in long-term operation, this manifests itself in corrosion damage, directly affecting the performance of load-bearing elements. Of scientific interest is the effect of temperature on corrosion-damaged load-bearing reinforced concrete structures, resulting in changes in their strength, stability, fire resistance, which is important for determining the vulnerability and assessing the survivability and protection of buildings and structures. To date, there are practically no approaches that comprehensively take
into account the actual work of reinforced concrete structures, taking into account the deterioration of their dynamic resistance
under the influence of the factors described above, which can lead to significant damage and socio-economic losses. Thus, the relevance of the solution of the set problem is to determine the strength and deformation characteristics of load-bearing reinforced concrete structures under the CSE, which will significantly improve the level of safety and security of the country's fixed assets as a whole. The paper presents the performance of compressed reinforced concrete elements under the combined action of corrosion and high temperature in fire.