Location
San Diego, California
Presentation Date
29 Mar 2001, 7:30 pm - 9:30 pm
Abstract
Pore pressure generation, and post-liquefaction dissipation and densification characteristics are data essential for detailed analysis of performance of sites containing liquefiable sands during and after earthquakes. These characteristics are also necessary for the design, analysis and choice of appropriate ground modification systems to mitigate liquefaction-induced hazards. Past research has addressed such material characteristics for clean sands. However, there are many sites that comprise non-plastic silts or silty sands have experienced liquefaction-induced damage. This paper presents results from an experimental study on silts and silty sands. Pore pressure generation characteristics are evaluated and compared with that of sands. Pre- and post-liquefaction compressibility and coefficient of consolidation, and densification characteristics are determined from undrained cyclic tests data followed by dissipation. Implications of these findings on the earthquake performance of sites containing non-plastic silts and silty sands are discussed. Their impacts on the choice of ground improvement techniques are also discussed.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 University of Missouri--Rolla, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Thevanayagam, S.; Martin, G. R.; Shenthan, T,; and Liang, J., "Post-Liquefaction Pore Pressure Dissipation and Densification in Silty Soils" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 23.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session04/23
Included in
Post-Liquefaction Pore Pressure Dissipation and Densification in Silty Soils
San Diego, California
Pore pressure generation, and post-liquefaction dissipation and densification characteristics are data essential for detailed analysis of performance of sites containing liquefiable sands during and after earthquakes. These characteristics are also necessary for the design, analysis and choice of appropriate ground modification systems to mitigate liquefaction-induced hazards. Past research has addressed such material characteristics for clean sands. However, there are many sites that comprise non-plastic silts or silty sands have experienced liquefaction-induced damage. This paper presents results from an experimental study on silts and silty sands. Pore pressure generation characteristics are evaluated and compared with that of sands. Pre- and post-liquefaction compressibility and coefficient of consolidation, and densification characteristics are determined from undrained cyclic tests data followed by dissipation. Implications of these findings on the earthquake performance of sites containing non-plastic silts and silty sands are discussed. Their impacts on the choice of ground improvement techniques are also discussed.
