1990
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
\
Figure 12. Displacement recorded at the topographic target A1.
Figure 9. Main results of the ground anchor suitability test
.
6 MAIN CONCLUSIONS
5 CSM WALL PERFORMANCE
The implemented monitoring and observation plan, is shown on
Figure 10, including 2 inclinometers and 7 topographic targets.
The case study presented in this paper shows the good
performance, mainly low deformations, of an anchored
retaining structure, combining CSM panels with a reinforced
concrete lining wall, leading to the optimization of both the
construction overall schedule and budget in a complex
geotechnical and site conditions. It was also shown that the use
of commercial FEM software with appropriated input data gives
a reasonable prediction of the main displacements, which are
critical for the verification of both the ultimate and
serviceability limit states, for all the excavation phases.
Figure 10. Monitoring and observation plan.
7 ACKNOWLEDGEMENTS
Figure 11 shows that the maximum displacement was
observed at 10 m depth, corresponding to 15 mm (inclinometer
I8).
The authors wish to thank to “Fundação para a Ciência e a
Tecnologia” (FCT) for the financial support under the strategic
project PEst-OE/ ECI/UI4047/2011. In addition, the authors
would like to thank the contribution of Ângelo Pereira.
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Figure 11. Displacement recorded at the inclinometer I8.
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