CUED Publications database

Back-analysis of crossrail deep excavations using 3D FE modelling—development of BRICK parameters for London clay

Chen, Y and Biscontin, G and Pillai, AK and Nicholson, DP (2018) Back-analysis of crossrail deep excavations using 3D FE modelling—development of BRICK parameters for London clay. In: 9th Conference on Numerical Methods in Geotechnical Engineering (NUMGE), -- to -- pp. 1145-1154..

Full text not available from this repository.

Abstract

© 2018 Taylor & Francis Group, London, UK. New underground stations up to 40 m deep for the Crossrail project in the London have been constructed. Excavations were supported by diaphragm walls or secant pile wall, using either the top-down or bottom-up construction sequence. To investigate the effects of these deep excavations on the existing adjacent buildings and tunnels, 3D FE models have been developed. The non-linear elastic plastic soil constitutive model—BRICK was used to model the behavior of London Clay and Lambeth Group. A back-analysis of the field inclinometer data from Tottenham Court Road Station—Western Ticket Hall was carried out using the 3D FEM. Revised BRICK parameters were derived from the back-analysis and applied in three other Crossrail excavations. The back analysis of four excavations has provided an intensive review on the BRICK model parameters for London Clay. The reliability of the BRICK model in London Clay to assess most probable ground movements has been demonstrated.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 05 Apr 2018 01:42
Last Modified: 27 Oct 2020 05:29
DOI: