Location

Chicago, Illinois

Date

02 May 2013, 4:00 pm - 6:00 pm

Abstract

The current methodology for embankment dams evaluation is not appropriate for levees of low heights, which have little effect on the stress state of the foundation soil and, therefore, on its response to the seismic action. In many cases the liquefaction potential of the alluvial deposits is not affected by the levee presence, although is the main factor in levee degradation. Lateral spreading of liquefiable foundation is the main cause of small levee cracking and settlement induced by earthquakes. On the other part, the procedures recommended for evaluation of lateral spreading are not directly applicable to the analysis of levees. In this paper both categories of procedures (for dams and for free field affected by lateral spreading) are applied comparatively for evaluation of a case history. This paper summarizes results of different procedures on a case history, where a California levee was severely damaged during Loma Prieta earthquake. Recommendations are made for the analysis of various categories of levees.

Department(s)

Civil, Architectural and Environmental Engineering

Meeting Name

7th Conference of the International Conference on Case Histories in Geotechnical Engineering

Publisher

Missouri University of Science and Technology

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

Selection of Most Appropriate Procedures for Seismic Evaluation of Levees Based on Case Histories

Chicago, Illinois

The current methodology for embankment dams evaluation is not appropriate for levees of low heights, which have little effect on the stress state of the foundation soil and, therefore, on its response to the seismic action. In many cases the liquefaction potential of the alluvial deposits is not affected by the levee presence, although is the main factor in levee degradation. Lateral spreading of liquefiable foundation is the main cause of small levee cracking and settlement induced by earthquakes. On the other part, the procedures recommended for evaluation of lateral spreading are not directly applicable to the analysis of levees. In this paper both categories of procedures (for dams and for free field affected by lateral spreading) are applied comparatively for evaluation of a case history. This paper summarizes results of different procedures on a case history, where a California levee was severely damaged during Loma Prieta earthquake. Recommendations are made for the analysis of various categories of levees.