2402
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
Samples having 70% relative density and subjected to CSR of
0.12 reached cyclic double amplitude of 4% shear strain at
nearly 205 cycles. In case of samples having 65% relative
density and subjected to CSR of 0.12 reached cyclic double
amplitude of 4% at nearly 57 cycles.
2 SUMMARY AND CONCLUSIONS
The constant volume cyclic shear response of marine silty sand
was examined using data from CDSS tests.
The intent was to compare the shear response of the silty sand
specimens under different relative densities.
Figure 11 Stress-strain response of marine silty sand under constant
volume cyclic DSS loading (σ’
v
= 100 kPa; Dr (%)= 65, CSR = 0.12; α=
0.0; OCR = 1.0).
samples having higher value of cyclic stress ratio and/or low
relative density fail at a small number of loading cycles. It is
found in this particular study that the number of loading cycles
required to reach the threshold strain is not much different for
two relarive densities after 300 loading cycles. The trends are
little different from the previous study reported in which the
curves are almost parallel even in high number of cycles.
3 ACKNOWLEDGEMENT
This research is supported by the Ministry of Land, Transport
and Maritime Affairs, Korea 2010 research grant (2010
Construction Technology Innovation Program, 10-CTIP-E04).
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