Pórticos desplazables (IV)

4.   Determinar si el máximo momento ocurre en los extremos de la columna o en un punto ubicado entre los extremos (10.13.5).

Si

 A u   >        35

r               Pu      

f 'c Ag           

Ec. (10-19)       

la columna se debe diseñar para la carga axial mayorada Pu  y el momento Mc, siendo

Mc  = dns M2                                                                                                                                                                                                                                                                                                       

æ                 ö                                             ç                 ÷                                            

ç =   C          ÷  M           M                                                                                                                                                                

=            m

è                 c  ø

1 -      Pu      

(   2ns  + ds

2s )                                                                                                                   

ç                 ÷                                                                                                                                                                                        

ç      0, 75P  ÷                                                                                                                                                                                      

En este caso, k se determina de acuerdo con los requisitos de 10.12.1 y δns  ≥ 1,0.