申論題

1. A W200×59 steel column shown in Fig. 1-1 and Table 1-1 is made of material with modulus of elasticity E of 200 GPa and yielding stress σy of 250 MPa. The column is fixed at its base and braced at the top so that it is fixed from displacement, yet free to rotate about the y-y axis; also, it can sway to the side in the y-z plane. Determine the maximum eccentric load (P) the column can support before either the column begins to buckle or the steel of the column yields.(25%)
Secant Formula: