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Finite Element Modelling of a Deep Excavation in Boston Blue Clay

Lookup NU author(s): Dr Gaetano Elia, Dr Mohamed Rouainia



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


The work investigates the behaviour of a deep excavation that forms part of a wide basement located in Boston, Massachusetts, USA. The glacial marine clay deposit is modelled with a kinematic hardening model for structured soils, its reduced bubble model version and the well-known Modified Cam Clay model. The aim of the work is to assess the effects of the added features of the advanced model, such as small-strain stiffness, structure degradation and anisotropy, on the numerical prediction of the overall behaviour of the excavation. The first part of the paper provides a brief description of the site conditions, ground profile and construction sequences for the case study under consideration. Then, the soil model calibration process using experimental undrained triaxial, self-boring pressuremeter and constant rate of strain consolidation tests is discussed. Finally, the comparison of the predicted wall deflection and ground settlements profiles with observed movements is presented.

Publication metadata

Author(s): Elia G, Rouainia M, Panayides S

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: VI Italian Conference of Researchers in Geotechnical Engineering (CNRIG2016)

Year of Conference: 2016

Pages: 242-247

Online publication date: 10/09/2016

Acceptance date: 02/04/2016

Date deposited: 17/03/2017

ISSN: 1877-7058

Publisher: Elsevier Science BV.


DOI: 10.1016/j.proeng.2016.08.436

Series Title: Procedia Engineering