1338
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
Figure 2. Comparison between measured DMT parameters and
predicted parameters using the CPT at Moss Landing site (Robertson
2009)
2 CPT/DMT TESTS AT SGGW CAMPUS
In order to determine geotechnical conditions in the foundations
of design buildings at SGGW Campus a total of 69 of CPT and
DMT tests were conducted (see Figure 3). Analysing data
gathered in the Ground Investigation Report, five geotechnical
layers were identified in the Campus test site (see Figure 4),
including a layer of brown glacial boulder clay noted in this
paper as layer No. III (acc. to geotechnical classification sandy
clay - saCL and sasiCL) of the Warta glaciation (
g
Q
p
W), for
which liquidity index values I
L
= (0.0÷0.11) and a layer of grey
glacial boulder clay of the Odra glaciation (
g
Q
p
O), sandy clay
with boulders as layer No. IV, for which I
L
= (0.0÷0.12). The
layers III and IV were pointed out as layers with suitable
geotechnical conditions for foundation of the Campus buildings.
Typical distributions of the cone resistance q
c
from CPT
tests and the horizontal stress index K
D
from DMT tests for III
and IV layers (boulder clay sediments) are shown in figure 5.
Relationships between measured values of q
c
and K
D
using CPT
and DMT tests respectively are shown in figure 6. These
relationships were obtained using statistical analysis (Solver
modulus).
Figure 3. Map of the SGGW Campus with locations of CPT (▼) and
DMT (■) tests (Rabarijoely et al. 2011)
Figure 4. Typical geological conditions at the SGGW (WULS) Campus
Figure 5.
Profiles of cone resistance q
c
from CPT tests and
horizontal stress index K
D
from DMT tests for III and IV layers
of SGGW (WULS) Campus
0,0
8
0,1
0
0
,
1
2
0
,
14
0
,1
6
0
,
1
8
0,
20
s'
vo[
M
Pa
]
8
10
1
2
14
1
6
1
8
20
2
2
2
4
26
2
8
KD
_
T
est[
-
]
4
6
8
1
0
1
2
14
1
6
18
2
0
qc
_
ob
l
[
-
]=
f(K
D)
Figure 6. Comparison between calculated q
c
(eq. 8) and K
D
measured
by DMT tests (
’
vo
- effective vertical stress in boulder clay layer)
