Abstract:
The article shows the influence of torsional rigidity of reinforced concrete elements on the spatial
work of bridges, overlappings, building frames and other complex statically indeterminate systems. It is shown that
the determination of torsional stiffnesses by the existing methods assumes the obligatory presence of spatial spiral
cracks, and torsional stiffness in the presence of normal cracks is not investigated. A method for determining the
torsional rigidity of reinforced concrete elements is described in the presence of normal cracks in them. It is shown
that this approach allows calculating the torsion of reinforced concrete elements of any cross-section, and also
taking into account the nonlinear properties of concrete. The article also describes the use of approximation
methods, in particular, the apparatus of the best Chebyshev approximation.
