Review article

Calculation of steel-reinforced concrete beam for instant loading taking into account the non-linearity of the concrete diagram ε-σ

UDC: 

624.07

DOI: 

10.23968/1999-5571-2020-17-2-85-94

Pages: 

85-94

Annotation: 

Issues of calculating steel-reinforced concrete beams are considered taking into account a nonlinear concrete diagram based on the Sargin formula. The nonlinear system of equations for determination of curvature and neutral axis, which is solved numerically, is written in explicit form. Explicit expressions for determination of other calculated quantities needed for design of steel-reinforced concrete beams are derived. Numerical examples are given. The analysis of accounting nonlinearity in comparison with the linear calculation is carried out.

Authors: 

Chepilko S. O. «Institut stroitelnykh ekspertyz» LLC St. Petersburg, Russia