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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.Kuznetsov I.L. – doctor of technical science, professor E-mail: kuznetsov@ Isaev A.V. – candidate of technical science, senior lecturer E-mail: isaev@ Gimranov L.R. – candidate of technical science, assistant. 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 articleThe causes of collapse of 30 m span frameless arch structure
Abstract.The causes of collapse of 30 m span frameless arch structure made from rolled galvanized steel on the construction yard are considered. Studies and calculations of the load capacity of arch elements showed that the lateral decks in arch elements resulting from manufacturing significantly reduce the load capacity of whole structure. Researching was conducted on engineering simulation software Lira 9.4. The studies were included two different finite element models (FEM) with lateral decks and without it. On the models were separately applied forces in longitude and lateral directions and supports, on the both ends of the model. The ratio of force to displacement in longitude and lateral direction was chosen as a criterion of model stiffness in longitude and lateral direction, respectively. After comparison of model stiffness in case with lateral decks and the case of model without lateral decks was concluded that lateral decks are the issue of significant reduction in lateral and longitude stiffness of model. If consider this different in stiffness of model the load capacity of frameless arch structure was excided more than 2-3 times and obviously that was a cause of collapse.
Keywords.The causes of collapse, frameless arch structure, researching.
For citations:Kuznetsov I.L., Isaev A.V., Gimranov L.R. The causes of collapse of 30 m span frameless arch structure // Izvestiya KGASU. 2011. №4(18) P.166-170.

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