Stress-strain state of reinforced bimodulus beam on an elastic foundation

Energy Management of Municipal Transportation Facilities and Transport - EMMFT 2017

Beskopylny, A.N.^1 ; Kadomtseva, E.E.^1 ; Strelnikov, G.P.^1 ; Berdnik, Y.A.^2

Don State Technical University, sq. Gagarin, 1, Rostov-on-Don

344010, Russia^1

South Federal University, Bolshaya Sadovaya Str. 105/42, Rostov-on-Don

344006, Russia^2

关键词: Beam on elastic foundation;    Bimodulus materials;    Bubnov-Galerkin methods;    Calculation theories;    Maximum bending moments;    Rectangular cross-section beams;    Stress strain state;    Subgrade reactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/90/1/012064/pdf
DOI  :  10.1088/1755-1315/90/1/012064

来源: IOP

【 摘 要 】

The paper provides the calculation theory of an arbitrary supported and arbitrary loaded reinforced beam filled with bimodulus material. The formulas determining normal stresses, bending moments, shear forces, rotation angles and a deflection of a rectangular crosssection beam reinforced with any number of bars aligned parallel to the beam axis have been obtained. The numerical study has been carried out to investigate an influence of a modulus of subgrade reaction on values of maximum normal stresses, maximum bending moments and a maximum deflection of a hinged supported beam loaded with a point force or uniform distributed load. The estimation is based on the method of initial parameters for a beam on elastic foundation and the Bubnov-Galerkin method. Values of maximum deflections, maximum bending moments and maximum stresses obtained by these methods coincide. The numerical studies show that taking into consideration the bimodulus of material leads to the necessity to calculate the strength analysis of both tensile stresses and compressive stresses.