چكيده به لاتين
One of the reasons for the nonlinear behavior of structures is the deterioration of some of its members due to corrosion of the reinforcement of these members. Which ignoring it may cause a premature destruction of the structure. The study of the effects of decay of these members under environmental conditions in concrete structures is the main subject of this study. In this research, firstly, the behavior of reinforced concrete sections under different percentages of reinforcement corrosion due to chloride ion penetration is investigated. Then, the effects of corrosion on structural behavior, including changes in the mechanical properties of the reinforcement, its effect on the curvature and moment of these members, and its performance, and The loss of the concrete cover, along with the relationships presented by you, will be examined by the researchers. In the following, according to the existing relationships, the calculation of the corrosion effects of the moment-curvture curves of the cross section with the help of soft Abaqus is discussed. For this purpose, studying anchor analysis of a number of reinforced concrete sections was performed. Then, for the cross section of a 6-story reinforced concrete frame with 3 span, the X-TRACT software and the regulations of the 360 publication defined the joints, and a section of this frame in two cases without corrosion (with different corrosion rates) with The help of the SAP software is compared. In the end, using the curvature anchor curves obtained from the above-mentioned methods in Chapter 3, the overlapping analysis of the three-dimensional structures was performed and the capacity curve (basal cutting force diagrams against the displacement of the roof mass center) and joints formed in different states.
Keywords: -Armature Crosion –Hystersis loops – Push over – Moment Curvture curves
