1796
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
The maximum deformations and the safety factors obtained
from the finite element analysis by 3D models are summarized
in table 3.
Table 3. Analyses results for after construction.
Stages
Factor of
safety
Max settlement
[mm]
Initial lining of left drift top
1.32
20.6
Initial lining of left drift bottom
1.45
27.3
Initial lining of right drift top
1.30
43.8
Initial lining of right drift bottom
1.39
44.3
As shown in the table 3 the factor of safety for all stages during
construction are acceptable. According to the Plaxis3D analyses
the maximum settlement of the 6-storey building after
construction is about 44 mm and the final factor of safety is
about 1.39.
5 ACKNOWLEDGEMENTS
This work was accomplished with the support of Pazhoohesh
Omran Rahvar Consulting Engineers Co.
6 REFERENCES
R.B.J. Brinkgreve, P.A. Vermeer, 2001.Plaxis 3D tunnel: Finite element
code for soil and rock analyses (Version 1.2), ISBN 90 265 18196.
Schanz, T. &Vermeer, P.A. Bonnier, P.G. (1999), “The hardening soil
model: Formulation and verification”, Beyond 2000 in
Computational Geotechnics, ISBN 90 5809 040 X.
Sauer, G., and Gold, H. 1989. NATM ground support concepts and their
effects on contracting practices. In Proceedings of the 9th Rapid
Excavation and Tunneling Conference (RETC), Los Angeles, 11–
14 June 1989. pp. 67–86.
