2390
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
0.1 following centrifuge studies by Julio (2009). No
displacements are expected to accrue due to cycling below this
level; further full-scale specific investigation of this lower
threshold is required.
0.0
0.2
0.4
0.6
0.8
1.0
0.0
0.2
0.4
0.6
0.8
1.0
300
250
200
150
100
50
0.02%D
0.2%D
2%D
Q
cyclic
/Q
T
Cycles, N
Q
mean
/Q
T
0
1
10
100
1000
0
10
20
30
Metastable tests
1mm/10cycles
a (mm)
Cycles, N
S 3.R4.CY6
MS 2.R3.CY2
MS 2.R4.CY2
MS 2.R5.CY2
MS 3.R6.CY6
1mm/100cycles
Data not logged
for first 34 cycles
Stable test
Figure 11. 3D plot for accumulated cyclic displacements equivalent to
0.02%D, 0.2%D and 2%D.
6 ACKNOWLEDGEMENTS
Figure 9. Accumulated cyclic displacements for the stable and meta–
stable loading tests
1
10
-10
0
10
20
30
40
50
100
1mm/100cycles
1mm/10cycles
a (mm)
Cycles, N
US 3.R2.CY2
US 2.R3.CY3
US 2.C1.CY3
US 2.R4.CY4
US 2.R5.CY3
US 2.C1.CY4
US 2.R6.CY2
US 2.R6.CY4
US 2.C1.CY5
The above research was funded by the EU (through the GOPAL
project) and Health and Safety Executive (HSE) of UK. We
gratefully acknowledge the Port Autonome de Dunkerque for
providing the test site. The field testing was conducted in
conjunction with Precision Monitoring Control Ltd. of Teesside
UK. The first author has been supported by the Commonwealth
Scholarship Commission during the writing of this paper.
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5 SUMMARY AND CONCLUSIONS
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displacement, stiffness and accumulated displacements
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silica sand indicate the following.
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