TECHNICAL
Precast
100
130
162
157
162
149
48
Zone 2 Zone 1
Column shoe zone
Zone 3
Column A-FE
BOLDA 30
cast-in-situ
100
84
86
86
70
48
24
Column B-FE
Precast
100
125
159
153
169
150
70
Zone 2 Zone 1
Column shoe zone
Zone 3
Column A-FE
BOLDA 52
cast-in-situ
100
90
84
80
95
103
56
Column B-FE
FIGURE 20: EVALUATION OF FE RESULTS FOR COLUMNS A (BOLDA® 30) AND
B – RELATIVE BENDING STIFFNESS OF SUBZONES IN %
FIGURE 21: EVALUATION OF FE RESULTS FOR COLUMNS A (BOLDA® 52) AND
B – RELATIVE BENDING STIFFNESS OF SUBZONES IN %
Figure 20 and Figure 21 show the distribution
of the bending stiffness along the column
axis related to the bending stiffness of the
undisturbed region (subzone 7). In zone 2, the
stiffness of precast column A is for both sizes
of BOLDA® column shoes significantly higher
compared to the cast-in-situ columns. In Zone 3,
the relative stiffness of precast column A is
smaller than the value obtained for column B.
Nevertheless, the higher stiffness of zone 2 will
compensate for the lower stiffness in zone 3.
The calculated deflection at the top of the
columns based on the measured deformations
are vshoe = 77 mm (BOLDA® 30) and vshoe = 172 mm
(BOLDA® 52). These values are ca. 39%
(BOLDA® 30) and 24% (BOLDA® 52) lower than
the reference values of the cast-in-situ
columns. Therefore, the results of the FE
calculations confirm the test results. Thus, such
FE-models are perfectly suited to support the
development of future column shoe systems
both quickly and efficiently. In addition, detailed
parameter studies can be carried out.
58 PEIKKO CONNECTIONS 1/2021