Location
San Diego, California
Presentation Date
29 Mar 2001, 4:00 pm - 6:00 pm
Abstract
Shear wave velocity vs, dynamic shear modulus Gmax, and damping characteristics are important parameters required for both static and dynamic response analyses of earth structures. Traditional indirect methods for estimation of these parameters based on void ratio, relative density, and mean effective stress have been successful for rather narrowly graded soils, but not for the most commonly found silty and gravelly soils. Their direct application to determine the above characteristics for silty and gravely soils are not satisfactory. A primary reason for this is that global void ratio is not a good measure of intergrain contact density for granular mixes. A simple array of two-sized particle system with large size disparity is presented to highlight the relative roles of intercoarser and interfiner grain contacts on mechanical response parameters of such granular mixes. New parameters, namely equivalent intergranular void ratio (ec)eq, and equivalent interfine void ratio (ef)eq are introduced as indices of active intergrain contacts. They are related to shear modulus and vs of silty and gravely soils.
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. and Liang, J., "Shear Wave Velocity Relations for Silty and Gravely Soils" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 26.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session01/26
Included in
Shear Wave Velocity Relations for Silty and Gravely Soils
San Diego, California
Shear wave velocity vs, dynamic shear modulus Gmax, and damping characteristics are important parameters required for both static and dynamic response analyses of earth structures. Traditional indirect methods for estimation of these parameters based on void ratio, relative density, and mean effective stress have been successful for rather narrowly graded soils, but not for the most commonly found silty and gravelly soils. Their direct application to determine the above characteristics for silty and gravely soils are not satisfactory. A primary reason for this is that global void ratio is not a good measure of intergrain contact density for granular mixes. A simple array of two-sized particle system with large size disparity is presented to highlight the relative roles of intercoarser and interfiner grain contacts on mechanical response parameters of such granular mixes. New parameters, namely equivalent intergranular void ratio (ec)eq, and equivalent interfine void ratio (ef)eq are introduced as indices of active intergrain contacts. They are related to shear modulus and vs of silty and gravely soils.
