I I I I I

Figure 5.32. Example of a structure where the magnification factor should be applied to horizontal forces rather than to bending moments. (No deformation is shown in this case, second order effects are instead assumed to be included in the fictitious, magnified horizontal force HEd.)

Expressions (5.30) and (H.7) are useful if the global buckling load can be defined without difficulty, like in certain regular structures, see e.g. 5.8.3.3 and H.1. In other cases second order effects may be calculated step-wise as indicated for a simple frame in figure 5.33.

0 0

Post a comment