Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

The static and seismic safety evaluation of the 115 m high Koman concrete face rockfill dam, located at the Drin river in Albania has been checked according to the current state-of-practice for the seismic safety evaluation of large embankment dams. For the dynamic analyses with the equivalent linear method a two-dimensional model of the highest dam section was used. The static analysis was carried out by a Mohr-Coulomb elasto-plastic material model of the rockfill. The safety of the dam was checked for the safety evaluation earthquake (SEE) with a peak ground acceleration of the horizontal component of 0.45 g. Spectrum-compatible artificially generated accelerograms were used determined based on a site-specific seismic hazard analysis. The peak absolute horizontal crest acceleration due to the SEE excitation is about 0.78 g for average material properties, and about 1.16 g for the most unfavorable material properties. The maximum crest settlement resulting from the sliding displacements plus an additional settlement due to the vibration-induced densification of the dam body are calculated as 0.98 m, under the most unfavorable conditions.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Seventh Conference

Publisher

Missouri University of Science and Technology

Publication Date

4-29-2013

Document Version

Final Version

Rights

© 2013 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 29th, 12:00 AM May 4th, 12:00 AM

Koman Concrete Face Rockfill Dam Updating the Static and Seismic Evaluations

Chicago, Illinois

The static and seismic safety evaluation of the 115 m high Koman concrete face rockfill dam, located at the Drin river in Albania has been checked according to the current state-of-practice for the seismic safety evaluation of large embankment dams. For the dynamic analyses with the equivalent linear method a two-dimensional model of the highest dam section was used. The static analysis was carried out by a Mohr-Coulomb elasto-plastic material model of the rockfill. The safety of the dam was checked for the safety evaluation earthquake (SEE) with a peak ground acceleration of the horizontal component of 0.45 g. Spectrum-compatible artificially generated accelerograms were used determined based on a site-specific seismic hazard analysis. The peak absolute horizontal crest acceleration due to the SEE excitation is about 0.78 g for average material properties, and about 1.16 g for the most unfavorable material properties. The maximum crest settlement resulting from the sliding displacements plus an additional settlement due to the vibration-induced densification of the dam body are calculated as 0.98 m, under the most unfavorable conditions.