Please use this identifier to cite or link to this item:
|Title:||A new 2D failure mechanism for face stability analysis of a pressurized tunnel in spatially variable sands||Authors:||Mollon, G.
Sand, Soil type
|Issue Date:||2010||Citation:||Mollon, G.,Phoon, K.K.,Dias, D.,Soubra, A.-H. (2010). A new 2D failure mechanism for face stability analysis of a pressurized tunnel in spatially variable sands. Geotechnical Special Publication (199) : 2052-2061. ScholarBank@NUS Repository. https://doi.org/10.1061/41095(365)208||Abstract:||This paper presents a method to consider the spatial variability of the soil shear strength parameters for determining the critical collapse pressure of a pressurized tunnel face. Only the case of a cohesionless soil is considered in the analysis. The present method is based on the kinematic theorem of limit analysis. A new 2D kinematically admissible collapse mechanism whose shape depends on the spatial distribution of the soil friction angle (φ) is proposed. In this mechanism, the normality condition imposed by limit analysis is enforced everywhere along the slip surfaces of the failure mechanism. The results obtained using the present approach are presented and compared to those based on common numerical methods such as the Finite Element Method (FEM) or the Finite Difference Method (FDM). The proposed method is computationally more efficient and has significant potential for simulation studies involving random fields. © 2010 ASCE.||Source Title:||Geotechnical Special Publication||URI:||http://scholarbank.nus.edu.sg/handle/10635/74035||ISBN:||9780784410950||ISSN:||08950563||DOI:||10.1061/41095(365)208|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 18, 2019
checked on Jun 28, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.