Influence of the ground yield surface shape on tunnel behaviour. Building damage assessment
DOI:
https://doi.org/10.24849/j.geot.2014.132.03Keywords:
Shallow tunnels, Elastoplastic modelling, Damages in buildingsAbstract
With the increasing growth of the population density in urban areas, space for construction is becoming more and more scarce and underground construction is an alternative increasingly used due to its advantages. This increased use has been heavily supported in the last decades by major developments in modeling and structural safety assessment of complex underground works, as regards its construction stages, geometry and soil-structure interaction. Some of these developments are due to the use of numerical methods. The aim of this work is to assess the influence of the soil model’s yield surface shape on the ground deformation evaluation resulting from tunnel excavation in overconsolidated Lisbon clay, by means of an improvement in the Modified Cam-clay model (MCCM) which consists in changing the shape of the soil’s yield surface. The effect of these changes on surface buildings damage assessment is performed.
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References
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