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. | Vahtel R.R. – senior lecturer E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Isaev A.V. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Zakirov R.A. – student 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 | Experimental studies of a stress-strain state of the steel frame |
| Abstract. | In article natural tests of two frames are considered: frame of continuous section and a frame with splitting in the level of eaves knot. The purpose of this experiment is confirmation of theoretical researches and comparison of the bearing ability of frames. The technique of carrying out experiment, the description of experimental installation and samples are considered. The results of tests which are the basis for further studying of the intense deformed state are given. From the analysis of results natural, and also numerical experiments, the given frames as planning, not only comparison of the bearing ability of frames, but also a ratio of tension and internal efforts in settlement sections of each frame separately represents practical interest. Processing of results of natural experiment is executed with determination of values of fiber tension and construction diagram normal tension in settlement sections in comparison with results of numerical experiments. By results of data processing the tensoresistor of sensors charts of distribution of tension, and also ratios of internal efforts are provided in ridge and eaves knots of frames. The specified data allows to judge behavior of the frame, as static and indefinable system, in an elasto-plastic stage with identification of a limit condition of the considered frames. Exhaustion of the bearing ability by criterion of development of plastic deformations for the frame 1 and 2 is recorded at loading of 2768,8 kg, however destruction of frames is recorded at loadings for the frame of 1 – 3069 kg, and for the frame of 2 – 3220 kg that testifies to the increased bearing ability of the frame due to internal static indefinability of the frame. |
| Keywords. | frame, construction site, testing, reliability, limit state. |
| For citations: | Vahtel R.R., Isaev A.V., Zakirov R.A. Experimental studies of a stress-strain state of the steel frame // Izvestiya KGASU. 2015. №2(32) P.137-148. |
