![]() ![]() The variables are the dimensions of the section, ultimate or yield stress of concrete or steel, number, spacing and concrete cover to centers of reinforcing bars and position of capacity axis. Hundreds of equations have to be derived and programmed in Microsoft Excel spreadsheets. ![]() The calculation of these forces and moments is done using basic mathematics. The resulting stress volumes will represent the forces and moments, which can be developed internally in a given section of concrete or steel. For concrete the parabolic nature of the stress/strain is applied in a section while for steel the linear stress/strain up to its yield value is considered acting on the steel cross section. The prediction of the capacity of a structural section in concrete or steel construction is based on the known stress/strain properties of these materials. This paper will show examples of capacity curves for reinforced concrete and steel sections solved by the analytical method. The analytical method precludes the use of the standard flexure and interaction formula in structural analysis and as such is considered as an out of the box method and contrary to the traditional graphical method of solution.
0 Comments
Leave a Reply. |