About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Ahmetzjanov F.H. – candidate of technical sciences, associate professor Теl.: (843) 510-47-05 Radaikin O.V. – post-graduate student Kazan State University of Architecture and Engineering (KSUAE) |
| Title of the article | TO DEFINITION OF DEPENDENCE BETWEEN SURFACE CRACKS’ PARAMETERS IN SOLID CONCRETE AND REINFORCED-CONCRETE ELEMENTS |
| Abstract. | To determine the dependencies of surface non-cutting cracks the problem of the tension of concrete solid elements (in the form of prisms) was considered. One group of elements contained the crack normal to tensile stress, while another contained the inclined crack (the task was simulated by finite elements method in Ansys software). The coefficients of three types of stress intensity factors were defined; for that the macro (Sub) in APDL language was written; the calculated coefficients of the 2nd and 3d type factors (KI and KII) in these tasks were used for the first time. Based on these factors, the dependencies between the length, width disclosure and depth of cracks were established, the borders of process zone were found, and the residual bearing capacity of the elements with cracks was evaluated. It was shown that the discharge stress area around the cracks was in the form of diamond. The received dependencies and the procedure for obtaining of the numerical values KI and KII constitute the scientific novelty. |
| Keywords. | Crack, depth, the stress intensity factor, the finite element method, volume task |
| For citations: | Ahmetzyanov F.H., Radaykin O.V. TO DEFINITION OF DEPENDENCE BETWEEN SURFACE CRACKS’ PARAMETERS IN SOLID CONCRETE AND REINFORCED-CONCRETE ELEMENTS // Izvestiya KGASU. 2008. №1(9) P.57-64. |
