Calculation Methods of Composite Beams Made of Steel and Concrete
Journal Title: Современное промышленное и гражданское строительство - Year 2018, Vol 14, Issue 2
Abstract
The article considers a composite beam made of steel and concrete for span structures of bridges, analysis of the stress-strain state of a steel-concrete beam by various methods, incl. usage of the software system Structure CAD Office for structural analysis and design. It has been suggested to use a multi-span continuous beam consisting of a closed steel contour formed by two walls of curvilinear contour, upper and lower belts of the beam, with filling of the contour with concrete in a compressed section of the beam. Current Standards do not offer single-valued method of calculation of a composite beam made of steel and concrete of a closed contour of an arbitrary shape filled with concrete. Calculations of the a composite beam made of steel and concrete as elements of heterogeneous elasticity allows to calculate the stress values with minimal effort and small measurement error. Usage of the composite structures made of steel and concrete for spun structures of bridges allows to significantly reduce the local stresses in concrete and in steel shell, also it allows to increase the bending and torsional rigidity of the beam, significantly increase local sustainability of steel elements.
Authors and Affiliations
Vitaly Veselov, Aleksandr Fedorov
Keywords
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