Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

A regulating dam named Drtijščica was constructed in 2002. This earth dam consists of a clay core, a random fill of silty and coarse material on the downstream side, and of rock fill on the upstream side. The crest length is 265m and the dam base thickness is 150 m. The height above the lowest foundation level is around 20 metres. The subsoil consists of a layer of loose, highly compressible clayeysilty material, three to five meters thick, overlying bedrock made of tectonically altered clayey shists and siltstones. During construction of the dam, settlements of the subsoil were measured at eight locations and after the construction a larger monitoring system was established. The paper deals with the analysis of the results of measurements taken during and after the construction of the Drtijščica earth dam. Back-analyses of the performance of the dam during construction were made using FEM calculations. The numerical analyses were performed in plane strain conditions using the Mohr-Coulomb material model as well as two soil models which take into account the stress-dependency of soil stiffness. In the paper the results of calculated settlements for drained and undrained loading and measured settlements are presented.

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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Numerical Analyses of the Performance of the Drtijščica Earth Dam

New York, New York

A regulating dam named Drtijščica was constructed in 2002. This earth dam consists of a clay core, a random fill of silty and coarse material on the downstream side, and of rock fill on the upstream side. The crest length is 265m and the dam base thickness is 150 m. The height above the lowest foundation level is around 20 metres. The subsoil consists of a layer of loose, highly compressible clayeysilty material, three to five meters thick, overlying bedrock made of tectonically altered clayey shists and siltstones. During construction of the dam, settlements of the subsoil were measured at eight locations and after the construction a larger monitoring system was established. The paper deals with the analysis of the results of measurements taken during and after the construction of the Drtijščica earth dam. Back-analyses of the performance of the dam during construction were made using FEM calculations. The numerical analyses were performed in plane strain conditions using the Mohr-Coulomb material model as well as two soil models which take into account the stress-dependency of soil stiffness. In the paper the results of calculated settlements for drained and undrained loading and measured settlements are presented.