Nonlinear Finite Element Analysis of Concrete Structures

- IS!. -
obtained using the AXIPLANE-program, table 1 shows a comparison
between predicted and experimental failure loads. The predicted
values were obtained using the standard version of the program,
where the shear retention factor is " = 0.01 and lateral bar
stiffness is ignored, i.e., K = 0. In all cases, the failure
criterion of the writer was utilized, and realistic strain
softening in the post-failure region was considered. Moreover,
all material parameters in the program were calibrated using
uniaxial data, only. In this table, the term F tneo / F GXD gives
the ratio of the theoretical failure load to the experimental
value. As widely different structures with delicate structural
behaviours were considered, this table clearly demonstrates the
benefits of the AXIPLANE-program. Within its axisymmetric and
plane applications, the potential of the AXIPLANE-program seems
to be quite attractive.
Table 6-1: Predicted and experimental failure loads of the
considered structures.
Structure
F /'F
theo. exp.
Panels (mean value)
Thick-walled closure
Beam without stirrups
Beam with stirrups
Lok-Test (a
c
=18.7 MPa)
Lok-Test (a =31.8 MPa)
c
0.95
1.13
0.98
0.80
0.97
0.99