The length of this beam was 1600 mm. Therefore, the basic drift
rate, dr,b corresponds to the displacement rate of 25 mm/s. Other
multiples of this rate (2, 4, 6 and 8) were also investigated.
The crack pattern obtained for this beam under basic drift rate
is basically of flexure–shear type (Fig. 15a), similar to the crack pattern
obtained for this beam under static loads. The compressive
stress profile obtained is typical of a cantilever beam under flexure–
shear mode (Fig. 15b). The only difference from the beam analyzed
under static loads was higher peak resistance, which was
obtained as 200.14 kN. The peak resistance is therefore only 1.36
times the resistance against static loading, which is primarily
attributed to the rate sensitivity effect. It has been demonstrated
by several examples [2–4] that the rate sensitivity aspect does
not lead to a change in failure mode but only results in an increase
in the resistance.