Оценка долговечности коррозионно-поврежденных железобетонных конструкций на базе диахронной модели деформирования

In the publication the necessity of development of methodologically equal approaches to estimation of service and limit state of reinforced concrete elements is marked with combined mixing of influence of power loadings and corrosion environment. The diachronic deformation model of the corrosion-damaged bended reinforced concrete elements with macrocracks (joint) is offered. Results of numerical experiments are shown. Verification with laboratory experiments of different authors is developed. Possibility of a direct estimation of a design residual life of elements is discussed. Graphical-analytical methodic of project or remaining durability calculation of bended concrete constructions is suggested. Durability of 1.020-1/87-series beam in industrial corrosion conditions is estimated. It is shown that even with regulatory performance work environment is significantly reduced carrying capacity of the considered latch up to 12.4% in 50 years. An extended range of limit condition is offered.