Open AccessCalculation of steel-reinforced concrete beam for instant loading taking into account the non-linearity of the concrete diagram ε-σ
Author(s) -
S. O. Chepilko
Publication year - 2020
Publication title -
vestnik graždanskih inženerov
Language(s) - English
Resource type - Journals
ISSN - 1999-5571
DOI - 10.23968/1999-5571-2020-17-2-85-94
Subject(s) - nonlinear system , diagram , curvature , reinforced concrete , beam (structure) , structural engineering , reinforced solid , neutral axis , materials science , mathematics , mathematical analysis , physics , geometry , engineering , statistics , quantum mechanics
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.