Common and different properties of beams and trusses
F. L. Shevchenko, S. N. Tsarenko
Donetsk National Technical University
Annotation: The paper cites the investigations of the approximate analysis accuracy of through bar structures in the form of trusses and towers by means of replacement with their equivalent bars of adduced rigidity. The principle methods of movement determination in a truss as a beam system, i.e. from a bending moment with regard to an additional deflection from a transverse force depending on the truss lettuce diagram and its sections have been considered. The simplified analysis of the movement in a beam system with its application to an equivalent beam changing a truss contained in application of the More formula with regard of the transverse force has been offered. The examples of the simplified method application of change of a truss to an equivalent beam for analysis of a metal tower on to rigidity, dynamic analysis of trusses to the natural and forced oscillations have been given. At dynamic analyses, the gained equivalent beams with distributed parameters have been changed by bars with a reduced mass under conditions of frequency equality of the basic tone of oscillations of the system with distributed parameters and frequencies of an equivalent beam with a reduced mass.
Keywords: approximate analysis, through bar structures, trusses, towers, equivalent system, systems with distributed parameters, reduced mass bars, frequency equality.
Pages: 215-223.
Link for citation: Shevchenko, F. L.; Tsarenko, S. N. Common and different properties of beams and trusses. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2011. – Vol. 7, N 4. – Р. 215-223. – URL: https://donnasa.ru/publish_house/journals/spgs/2011-4/03_schevchenko_carenko.pdf (date of access: 16.09.2024). (in Russian)
Vol. 7, N 4 (2011)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture