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. | Kamalov A.Z. – candidate of physical and mathematical sciences, professor E-mail: shigabutdinov@ kgasu.ru Khamidullina A.A. – senior lecturer 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 article | To the question of research of the stress strain state and stability arched constructions |
| Abstract. | This paper deals with the problem of the stress-strain state and stability of the arch structure, consisting of open cylindrical shell (coating) with supporting elastic arches under the influence of various external loads, including wind load. Internal pressure or reactions supporting arches depend on conditions on the contact surface of the coating and arches. In practice, to realize different fixing conditions. It examines the state of stress only in the case of free-slip and hard cover binding and arches. In the first case, to determine the reactions supporting arches draws the Winkler model, ie response as proportionate deflection surface. In the second case, we propose a different approach, in which the arch structure is divided into the shell and double arched elements. Under these assumptions, the problem of the bending of arch structures under the action of external forces (weight, wind and snow loads) is reduced to the problem of the interaction of non-closed-layer shell elements with double-layer arched elements. To determine the wind pressure is considered perturbed cylindrical cover with inseparated cross flow to steady plane flow unbounded ideal incompressible fluid. In determining the velocity potential «secondary» perturbations caused by elastic displacements covering ignored. With these assumptions, the differential equation of the system. The algorithms calculate the arch construction for strength and stability. The formulas for the investigation of the stress-strain state and to determine the critical wind speeds. |
| Keywords. | Arch, shell, arched structure, stress – strain state, stability, critical velocity. |
| For citations: | Kamalov A.Z., Khamidullina A.A. To the question of research of the stress strain state and stability arched constructions // Izvestiya KGASU. 2012. №4(22) P.130-138. |
