Location
St. Louis, Missouri
Presentation Date
12 Mar 1991, 2:30 pm - 3:30 pm
Abstract
A Numerical tool was developed to evaluate the effects of differential movement which occurs at the ground surface during earthquakes. A special emphasis is placed on liquefaction of subsoils. A complicated three-dimensional analysis was avoided by using a pseudo-three-dimensional method of finite element analysis which runs on an element mesh of the ground surface topography as seen from the sky. The present analysis takes into account the nonlinear stress-strain behavior of soils, the ground softening due to pore pressure development, and the irregularity in the topography. The proposed method was applied to several cases in which buried pipelines were damaged by seismic liquefaction. The calculated results showed that the differential movement of the ground in cyclic manners is not significant. Thus, it seems that those pipeline failures were induced not by the cyclic ground movement but by the monotonic or permanent displacement which accumulated to several meters.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
2nd International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 1991 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
Towhata, Ikuo and Islam, M. D. Shafiqui, "Pseudo- Three-Dimensional Analysis of Cyclic Deformation of Ground Subject to Seismic Liquefaction" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 15.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session08/15
Included in
Pseudo- Three-Dimensional Analysis of Cyclic Deformation of Ground Subject to Seismic Liquefaction
St. Louis, Missouri
A Numerical tool was developed to evaluate the effects of differential movement which occurs at the ground surface during earthquakes. A special emphasis is placed on liquefaction of subsoils. A complicated three-dimensional analysis was avoided by using a pseudo-three-dimensional method of finite element analysis which runs on an element mesh of the ground surface topography as seen from the sky. The present analysis takes into account the nonlinear stress-strain behavior of soils, the ground softening due to pore pressure development, and the irregularity in the topography. The proposed method was applied to several cases in which buried pipelines were damaged by seismic liquefaction. The calculated results showed that the differential movement of the ground in cyclic manners is not significant. Thus, it seems that those pipeline failures were induced not by the cyclic ground movement but by the monotonic or permanent displacement which accumulated to several meters.
