MSD applied to the construction of the British Library basement: a multi-stage excavation in London Clay

This note presents the application of the mobilisable strength design (MSD) method to the monitoring results of the multi-propped excavation in the south area of the British Library Euston, constructed in a highly overconsolidated stiff clay deposit. The MSD method is an energy-based approach (a non...

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Bibliographic Details
Published in:Canadian geotechnical journal 2024-03, Vol.61 (3), p.596-603
Main Authors: Crispin, Jamie J., Bateman, Abigail H., Voyagaki, Elia, Campbell, Alexandra, Mylonakis, George, Bolton, Malcolm D., Vardanega, Paul J.
Format: Article
Language:English
Subjects:
Clay
Degrees of freedom
Design
Dredging
Excavation
Finite element method
Libraries
Limit states
Mathematical analysis
Monitoring
Parameter sensitivity
Citations: Items that this one cites
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Summary:This note presents the application of the mobilisable strength design (MSD) method to the monitoring results of the multi-propped excavation in the south area of the British Library Euston, constructed in a highly overconsolidated stiff clay deposit. The MSD method is an energy-based approach (a nonlinear finite-element method for a single-degree-of-freedom soil-wall system) introduced to develop a simplified design methodology that satisfies both ultimate and serviceability limit states. Wall displacement predictions based on the MSD method are compared with considerable field monitoring data. The sensitivity of the method to reasonable variations in input parameters is considered. A spreadsheet and python code demonstrating the MSD analysis from this paper are provided in the online supplement alongside details of the mathematical formulation.
ISSN:0008-3674
1208-6010
DOI:10.1139/cgj-2023-0238