Methods of controlling spatial stability of steel columns with a variable web height from a bending moment cross-section
S. І. Bilyk
Kyiv National University of Construction and Architecture
Annotation: There are given analytical researches carried out on the base of V.Z.Vlasov’s theory of thin-wall rods to analyze a spatial stability of frame and column elements of the I-shaped cross-section under a longitudinal force and bending moment. There was obtained a system of differential equations which describes a spatial operation of a variable cross-section elastic rod under a bending moment. There is suggested an approximate solution of the system of differential equations when approximating a cross-section inertia moment and sectorial cross-section inertia moment by a parabolic dependence. There have been developed methods of controlling stability of a double-T column of a variable cross-section from the plane of a bending moment effect. There are shown peculiarities of a methodological approach of controlling a spatial stability of fixed section columns adopted in the normative documents.
Keywords: steel frame, columns, I-shaped cross-section with a variable web height, buckling resistance of columns, stress-strain condition, optimum structure, rational design.
Pages: 279-284.
Link for citation: Bilyk, S. І. Methods of controlling spatial stability of steel columns with a variable web height from a bending moment cross-section. – Text : electronic. – In: Metal Constructions. – 2008. – Vol. 14, N 4. – Р. 279-284. – URL: https://donnasa.ru/publish_house/journals/mk/2008-4/08_bilyk.pdf (date of access: 03.07.2024). (in Russian)
Vol. 14, N 4 (2008)Journal: Metal Constructions
Publish house: Donbas National Academy of Civil Engineering and Architecture