|
||
|
|
||
|
Axis |
V =<0.5 V_ |
V>0.5 V_ |
|
|
yy |
NSd=<0.25 NRd |
Mpl,y,Rd |
Mpl,y,Rd (1-r) |
|
yy |
Nsd >0.25 NRd |
Mpl,y,Rd1.11 (1-n) |
Mpl,y,Rd1.11 (1-n-r) |
|
zz |
NSd=<0.25 NRd |
Mpl,z,Rd |
Mpl,z,Rd(1-r) |
|
zz |
NSd>0.25 NRd |
Mpl,z,Rd1.56 . . (1-n)(n+0.6) |
Mpl,z,Rd1.56 . . (1-n-r)(0.6+n/(1-r)) |
where:
|
r |
(2 VSd / VRd –1)2 |
|
a |
NSd / NRd |
|
Nsd |
axial force |
|
VSd |
shear force |
|
Mpl,y,Rd |
full plastic moment around yy axis |
|
Mpl,z,Rd |
full plastic moment around zz axis |
|
VRd |
plastic shear force |
|
NRd |
plastic axial force |