Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

Experimental model study was carried out on soft Kaolinite clay using modified hydraulically pressurized oedometer with vertical sandwick of different diameter using open mandrel technique to investigate consolidation characteristics based on settlement and excess pore water pressure dissipation measurements. The main aim of this paper is to know the behavior of this consolidated mass under seismic stresses for different periods of time using shaking table.Pre and post shear strength of consolidated soil mass is evaluated using vane shear apparatus under seismic stresses. The interaction phenomena between clay and sandwick drain is also studied in oedometer to know stability of vertical geodrain under vibratory loads. Average degree of consolidation is computed from settlement and pore pressure measurement readings and is compared with theoretical solutions developed by authors. The results clearly indicate that by using sandwicks the % loss in strength can be reduced within the limits. Also it was concluded that clay-drain interface was not much disturbed under seismic stresses and quick clay condition can be reduced by using sandwicks.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

Soil-Structure Interaction of Soft Clay Using Prefabricated Vertical Geodrains Under Seismic Stresses

San Diego, California

Experimental model study was carried out on soft Kaolinite clay using modified hydraulically pressurized oedometer with vertical sandwick of different diameter using open mandrel technique to investigate consolidation characteristics based on settlement and excess pore water pressure dissipation measurements. The main aim of this paper is to know the behavior of this consolidated mass under seismic stresses for different periods of time using shaking table.Pre and post shear strength of consolidated soil mass is evaluated using vane shear apparatus under seismic stresses. The interaction phenomena between clay and sandwick drain is also studied in oedometer to know stability of vertical geodrain under vibratory loads. Average degree of consolidation is computed from settlement and pore pressure measurement readings and is compared with theoretical solutions developed by authors. The results clearly indicate that by using sandwicks the % loss in strength can be reduced within the limits. Also it was concluded that clay-drain interface was not much disturbed under seismic stresses and quick clay condition can be reduced by using sandwicks.