Civil Engineering Reference
In-Depth Information
Verschiebungen in Abhängigkeit vom Pressendruck
Displacements, mm
0
1
2
3
4
5
-2
-4
1
-6
2
3
-8
Cracks
-10
4
5
6
7
-12
9
8
1
1
1
0
1
2
-14
0
5
10
15
20
25
30
35
Pressure, bar
Figure 8.4
Vertical displacements at the crown and corresponding cracks
actual stress state can be determined in real time, so that there are no uncer-
tainties about the residual bearing capacity due to increasing displacements.
Figure 8.5 shows the development of the stress-intensity-index in two
adjacent locations on the lining, at the crown and at the invert. The stress-
intensity-index in the crown (points 1-3-5) initially reaches an untypically
high value of approximately 40%. The remaining curve has typical values
Stress-intensity-index
100%
Crown RHS
1
2
3
80%
4
5
60%
6
7
9
8
1
0
12
1
1
Invert RHS
40%
20%
0%
0
5
10
15
20
25
30
35 40
Pressure, bar
Figure 8.5
Stress-intensity-index at the crown (monitoring points 1-3-5), and
invert (5-7-9)
