Geotechnical characterisation of the Miocene formations at the location of Ivens shaft, Lisbon

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Title: Geotechnical characterisation of the Miocene formations at the location of Ivens shaft, Lisbon
Authors: Pedro, A
Zdravkovic, L
Potts, DM
Sousa, JA
Item Type: Journal Article
Abstract: The design of complex underground structures in an urban environment requires in the first instance an appropriate characterization and interpretation of the ground conditions and of the mechanical behaviour of soil formations in the ground profile. With such information it is then possible to select and calibrate appropriate soil constitutive models for application in advanced numerical analysis, with the objective of predicting the induced ground movements and the potential damage to existing structures and services. This paper provides an interpretation of the site investigation data collected for the numerical analysis and design of the Ivens shaft excavation in Lisbon, Portugal. For the first time a comprehensive set of interpreted data is obtained for two of the main formations in the Lisbon area, Argilas e Calcários dos Prazeres (AP) and Areolas da Estefânia (AE), improving the understanding of their mechanical behaviour and making the data available for application in most soil constitutive frameworks. It is evident from the results that even with careful testing procedures the data may appear to be inconsistent, requiring further assumptions when deriving soil parameters. Such assumptions are discussed and emphasis is placed on the need to combine data from laboratory and field investigations.
Issue Date: 13-Dec-2017
Date of Acceptance: 1-Nov-2017
ISSN: 1470-9236
Publisher: Geological Society
Start Page: 96
End Page: 107
Journal / Book Title: Quarterly Journal of Engineering Geology and Hydrogeology
Volume: 51
Issue: 1
Copyright Statement: © 2018 The Author(s). Published by The Geological Society of London. All rights reserved. For permissions: Publishing disclaimer:
Sponsor/Funder: Geotechnical Consulting Group
Funder's Grant Number: GCG Chair
Keywords: 0406 Physical Geography And Environmental Geoscience
0905 Civil Engineering
Geological & Geomatics Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering

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