Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

The paper focuses on loose clean and silty sand fills that liquefied during the 1989 Loma Prieta, California earthquake. Available field case histories of liquefaction that include measured shear wave velocity from the Andrus et al. (2003) database are used. The liquefaction behavior observed in these field case histories is compared with the results of two large scale and six centrifuge shaking tests conducted by the authors. System identification and site response analyses are used to obtain the corresponding cyclic shear stress ratios in the tests. Due consideration is given to the shaking duration and 1D versus 2D shaking in the laboratory and field. The comparison between field and shaking tests is very good, with both case histories and shaking tests validating well the Andrus and Stokoe (2000) liquefaction chart for Mw = 7.0. This agreement also serves to validate the large scale and centrifuge testing techniques presented, as tools that can be used toward improved methods for liquefaction evaluation and mitigation of sandy fills.

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

Share

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

Case Histories of Liquefaction in Loose Sand Fills During the 1989 Loma Prieta Earthquake: Comparison With Large Scale and Centrifuge Shaking Tests

Chicago, Illinois

The paper focuses on loose clean and silty sand fills that liquefied during the 1989 Loma Prieta, California earthquake. Available field case histories of liquefaction that include measured shear wave velocity from the Andrus et al. (2003) database are used. The liquefaction behavior observed in these field case histories is compared with the results of two large scale and six centrifuge shaking tests conducted by the authors. System identification and site response analyses are used to obtain the corresponding cyclic shear stress ratios in the tests. Due consideration is given to the shaking duration and 1D versus 2D shaking in the laboratory and field. The comparison between field and shaking tests is very good, with both case histories and shaking tests validating well the Andrus and Stokoe (2000) liquefaction chart for Mw = 7.0. This agreement also serves to validate the large scale and centrifuge testing techniques presented, as tools that can be used toward improved methods for liquefaction evaluation and mitigation of sandy fills.