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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Tuysina E.B. – student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kaymov R.A. – doctor of physical and mathematical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleCalculation of the I-beam under the action of irregular cyclic loading
Abstract.Increasing the operational reliability of the structures while reducing their consumption of materials is the most important area of resource-saving technologies. Depending on the kind of processes occurring in the building, its construction can be influenced by cyclic loading. The complexity of predicting the behavior of structures in concrete buildings under cyclic loading is determined by many factors: the geometric characteristics sectional diagram of cyclic loading, the magnitude of the amplitude, material nature, and others. They all have an impact on patterns of initiation and propagation of fatigue cracks. Pivotally supported I-beam is considered. In the center of its cross section a small technological has incision which may be considered as a longitudinal crack. It is believed that the I-beam is destroyed upon reaching its critical crack size. The dependence of durability design of load amplitude, the initial crack size is studied. The possibility to replace the irregular cyclic load by the equivalent uniform cyclic loading are considered. The following results are obtained: the value of the load has little effect on the relative magnitude of durability, but it affects the value of the ratio of maximum amplitude to the average of all waves and the number of waves in the period.
Keywords.cyclic loading, crack, durability, resource structure.
For citations:Tuysina E.B., Kaymov R.A. Calculation of the I-beam under the action of irregular cyclic loading // Izvestiya KGASU. 2014. №4(30) P.335-340.


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