VERIFICATION OF THE METHOD OF CALCULATION OF EXTRA-PRESSURE COMPRESSED COLUMNS COMPARED WITH THE CONSTRUCTION NORMS OF UKRAINE
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 177, Issue 11
Abstract
In the works published earlier were obtained dependence which allows to obtain the value of the maximum force (the second group of limiting States) depending on the geometric characteristics of eccentrically compressed columns. This article will be a comparison of the proposed method the calculation method of the State construction norms of Ukraine. As the sample was adopted square steel cold formed electrically welded pipe section 50х50х2 mm length l = 3000 mm l = 6000 mm. The calculation was performed for the three design schemes: a hinged column, loaded at one end eccentrically applied force F; the column is rigidly fixed at the bottom, hinged at the top and abbert loaded eccentrically applied force on the upper end; a column rigidly fixed at the bottom, loaded at the free end of the eccentric applied force. In the proposed equations the value of the maximum power to obtain analytically, we can not, but knowing the geometrical characteristics of columns and using the method of direct integration it is possible to obtain the values of the ultimate strengths. The calculation process is organized as follows: set the step load in each approximation calculated deflection. The calculation continues until the load at which the obtained value of the deflection derevovolos limiting value thus. Calculated load is taken for the maximum force F which characterizes the bearing capacity of the columns. After analyzing the results of the calculations, and received the error that does not exceed 19 %, we can talk about the possibility of using the proposed formulas for calculation of the maximum posacenere because they can afford to automate the process and reduce the computation time. The proposed formulas allow to obtain the maximum power depending on the preset value of deflection.
Authors and Affiliations
E. I. Galagurya, М. A. Kovalov, L. Kravtsiv, І. Bychenok
Keywords
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- EP ID EP357399
- DOI 10.18664/1994-7852.177.2018.136577
- Views 50
- Downloads 0
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