Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

Finite element step-by-step back analyses were performed on four typical instrumented test sections of several anchored, bored-pile walls, located on the Vransko - Blagovica section of the Celje - Ljubljana motorway. A sufficiently accurate numerical model was obtained in the early stages of the construction sequence, so that it was possible to predict with confidence in advance the critical stages which were encountered at the end of the construction works. The back analyses were carried out using the computer program Plaxis, assuming the simple Mohr-Coulomb constitutive relationship and a simplified geological structure. The results of these analyses were compared with those obtained using the more sophisticated back analyses performed by Vukadin [2001], which took into account the Hardening Soil model and a more detailed geological structure. It was found that, even though the more sophisticated model provided slightly more accurate results, the results obtained by using the simplified model were very similar, which makes the use of such a model and the observational method very attractive for practicing engineers.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fifth Conference

Publisher

University of Missouri--Rolla

Publication Date

4-13-2004

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 13th, 12:00 AM Apr 17th, 12:00 AM

Back Analyses of Anchored Retaining Structures

New York, New York

Finite element step-by-step back analyses were performed on four typical instrumented test sections of several anchored, bored-pile walls, located on the Vransko - Blagovica section of the Celje - Ljubljana motorway. A sufficiently accurate numerical model was obtained in the early stages of the construction sequence, so that it was possible to predict with confidence in advance the critical stages which were encountered at the end of the construction works. The back analyses were carried out using the computer program Plaxis, assuming the simple Mohr-Coulomb constitutive relationship and a simplified geological structure. The results of these analyses were compared with those obtained using the more sophisticated back analyses performed by Vukadin [2001], which took into account the Hardening Soil model and a more detailed geological structure. It was found that, even though the more sophisticated model provided slightly more accurate results, the results obtained by using the simplified model were very similar, which makes the use of such a model and the observational method very attractive for practicing engineers.