Analysis of a braced excavation in soft soils considering the consolidation effect

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Pedro Alves Costa (Author) FEUP; José Leitão Borges (Author) FEUP; Manuel Matos Fernandes (Author) FEUP

Journal

Title: Geotechnical and Geological Engineering

Vol. 25 No. 6

Pages: 617-629

ISSN: 0960-3182

Indexing

ISI Web of Knowledge

Scopus - 18 Citations

INSPEC

Scientific classification

FOS: Engineering and technology > Civil engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Geotechnics

Other information

Authenticus ID: P-007-JX9

DOI: 10.1007/s10706-007-9134-7

Abstract (EN): The studies of excavations in soft clayey soils are normally based on undrained total stress analyses. A better approach consists of taking into account the effects of consolidation during the excavation-bracing process and after the completion of the construction by means of coupled finite element analyses in effective stresses. In this paper, the geotechnical behaviour of a braced excavation in the soft soils of San Francisco (USA) is analysed, both during and after the construction period. Numerical analyses are performed with a finite element program, which incorporates the Biot consolidation theory (coupled formulation of the water flow and equilibrium equations) and soil constitutive relations simulated by the p-q-ο, critical state model. Numerical results are compared with field results. © Springer Science+Business Media B.V. 2007.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13