Location
St. Louis, Missouri
Presentation Date
04 Apr 1995, 2:30 pm - 3:30 pm
Abstract
Rotational shear is a class of loading under which the second invariant of the deviatoric stress tensor, J, is kept constant during shear. A limited number of undrained tests on saturated loose sand have shown that rotational shear yields more pore pressure than other shear paths of the same J magnitude. By intuition, this experimental finding seems to suggest that soil subjected to multi-directional earthquake loading, which bears the characteristics of the rotational shear, has lower liquefaction resistance than that under unidirectional shaking. However, in contrast to intuition, a preliminary but careful examination of the field stress and boundary conditions indicates that rotation shear seems to have very little impact on the seismic response of natural soil deposits. This paper presents the theoretical evidence that supports the preliminary conclusion.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
3rd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1995 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
Li, X. S. and Shen, C. K., "The Role of Rotational Shear in Site Response Analyses" (1995). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 13.
https://scholarsmine.mst.edu/icrageesd/03icrageesd/session07/13
Included in
The Role of Rotational Shear in Site Response Analyses
St. Louis, Missouri
Rotational shear is a class of loading under which the second invariant of the deviatoric stress tensor, J, is kept constant during shear. A limited number of undrained tests on saturated loose sand have shown that rotational shear yields more pore pressure than other shear paths of the same J magnitude. By intuition, this experimental finding seems to suggest that soil subjected to multi-directional earthquake loading, which bears the characteristics of the rotational shear, has lower liquefaction resistance than that under unidirectional shaking. However, in contrast to intuition, a preliminary but careful examination of the field stress and boundary conditions indicates that rotation shear seems to have very little impact on the seismic response of natural soil deposits. This paper presents the theoretical evidence that supports the preliminary conclusion.
