Numerical Researches of Local Stability of Beam Webs of Component i-Section with Local Dimples-Bucklings in Span Structures of Bridge Constructions
Journal Title: Металлические конструкции - Year 2017, Vol 23, Issue 3
Abstract
The aim of researches is an estimation of influence of characteristic geometrical imperfections on local and general stability of elements of bridge constructions as flange metallic beams with component section. An object of researches is a steel main beam of component i-section of middle span (Lmax = 11,4 m) for the three-span road-transport overpass executed on a cut beam scheme 8,6+11,4+8,6 m. Researches were conducted with the use of a program complex SCAD Office 11.5, during elastic work of material. A calculation scheme was the spatial system designed by finite elements as shells of rectangular and three-cornered configuration for the plane stress state. On results of calculation the forms of loss of stability and coefficients of supply of stability were determined, that allowed to estimate the value of influence of one or another imperfection on bearing strength of the examined beams. The results of researches can be used at the primary estimation of local stability of web of beams with the indicated imperfections.
Authors and Affiliations
Volodymyr Mushchanov, Andrei Mironov, Alexander Kovalenko
Keywords
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