Prestressed concrete beams with flat bent-up reinforcement mathematic model with different shear spans
The article presents the results of mathematical simulation of prestressed reinforced concrete beams with a rational kind of reinforcement placement. For assessment of mode of deformation bending beam-type it is traditionally applied classical test circuit scheme is traditionally applied - free single-span beam loaded two concentrated forces in a third span. Changing the loading scheme effects on crack formation load (in beam with relational span shear а/h=1,67 in 2,3 times above, as compared with beam with relational span shear 4,33) and fracture scheme.