MSD applied to the construction of the British Library basement: a multistage excavation in London Clay

Jamie Crispin, Abigail H Bateman, Elia Voyagaki, Alexandra Campbell, George Mylonakis, Malcolm Bolton, Paul J Vardanega*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

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.
Original languageEnglish
Number of pages8
JournalCanadian Geotechnical Journal
Early online date30 Oct 2023
DOIs
Publication statusE-pub ahead of print - 30 Oct 2023

Keywords

  • Mobilisable Strength Design (MSD)
  • Braced excavation
  • British Library Euston

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