The development of fracture mechanics hypotheses applicable to the calculation of reinforced concrete structures for the second group of limit states

• Main Authors: Iakovenko Anatolyevich Igor, Kolchunov Ivanovich Vladimir
• Format: Article
• Language: English
• Published: Institut za istrazivanja i projektovanja u privredi 2017-01-01
• Series: Istrazivanja i projektovanja za privredu
• Subjects: hypotheses; fracture mechanics; reinforced concrete structures; new concrete constants; double-cantilever element; calculation apparatus; crack formation; bond; effect of discontinuity
• Online Access: https://scindeks-clanci.ceon.rs/data/pdf/1451-4117/2017/1451-41171703367I.pdf

The problems of the fracture mechanics hypotheses development are formulated with reference to the calculation of reinforced concrete structures in the presence of cracks. The main aspects of fracture mechanics are given. They focus on the features of the predestruction zone, as well as the hypotheses and assumptions underlying the calculation of reinforced concrete structures for the second group of limit states. It is described the features of cutting a two-cantilever element including a crack for constructing an effective instrument of calculation for reinforced concrete with allowance for physical nonlinearity, cracking processes, bond of reinforcement with concrete, and the effect of discontinuity. It is obtained a new solution to the problem of the stressed-strained state of the reinforced concrete element in the zone immediately adjacent to the crack.