Location
St. Louis, Missouri
Presentation Date
14 Mar 1991, 10:30 am - 12:30 pm
Abstract
A laboratory based approach is described to obtain the post-liquefaction steady-state shear strength of very loose, recently deposited, layered fluvial silty sand deposits susceptible to lateral spreading. Triaxial specimens are formed by the Remolded Discontinuously Vet Pluvial Soil Sample (RDVPSS preparation method. RDWPSS silty sand specimens are prepared by dumping the soil in water and a lowing for segregation and development of layers. Ten undrained tests were conducted using ranges of consolidation pressures σ̅3c = 0.2 to 2.7 kg/cm2 and Kc = σ̅1c/ σ̅3c = 1 to 2. The experiments included both monotonic compression triaxial (C̅I̅U̅) and cyclic torsional (CyT-C̅A̅U̅) tests. The RDWPSS soil was contractive in all tests including those conducted at the lowest confining pressures. Unique steady-state lines are defined from the results of these tests. The ratio Sus/ σ̅1c is constant and equal to about 0.12 for Kc = 1 to 1.5, and it is proposed us c to use this value for lateral spread evaluations in conjunction with Newmark's sliding block analysis to predict permanent displacement. Finally, the approach is successfully used in a preliminary evaluation of the 18 cm lateral displacement measured at the Wildlife site in Southern California after the November 27, 1987 earthquake.
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
Baziar, Mohammed H. and Dobry, Ricardo, "Liquefaction Ground Deformation Predicted from Laboratory Tests" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 32.
https://scholarsmine.mst.edu/icrageesd/02icrageesd/session03/32
Included in
Liquefaction Ground Deformation Predicted from Laboratory Tests
St. Louis, Missouri
A laboratory based approach is described to obtain the post-liquefaction steady-state shear strength of very loose, recently deposited, layered fluvial silty sand deposits susceptible to lateral spreading. Triaxial specimens are formed by the Remolded Discontinuously Vet Pluvial Soil Sample (RDVPSS preparation method. RDWPSS silty sand specimens are prepared by dumping the soil in water and a lowing for segregation and development of layers. Ten undrained tests were conducted using ranges of consolidation pressures σ̅3c = 0.2 to 2.7 kg/cm2 and Kc = σ̅1c/ σ̅3c = 1 to 2. The experiments included both monotonic compression triaxial (C̅I̅U̅) and cyclic torsional (CyT-C̅A̅U̅) tests. The RDWPSS soil was contractive in all tests including those conducted at the lowest confining pressures. Unique steady-state lines are defined from the results of these tests. The ratio Sus/ σ̅1c is constant and equal to about 0.12 for Kc = 1 to 1.5, and it is proposed us c to use this value for lateral spread evaluations in conjunction with Newmark's sliding block analysis to predict permanent displacement. Finally, the approach is successfully used in a preliminary evaluation of the 18 cm lateral displacement measured at the Wildlife site in Southern California after the November 27, 1987 earthquake.
