Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

Dynamic behavior of pile-foundations during earthquakes is important for the performance of many foundations. To clarify the mechanism of the soil-pile interaction, we have conducted a series of numerical analysis of a single pile foundation in the different types of a two-layer ground. Upper layer of the ground is composed of dense sand, reclaimed soils, medium dense sand or loose sand, and the lower layer of the ground is composed of clayey soils. In the liquefaction analysis, we have used a fully coupled effective stress analysis method with the cyclic elasto-plastic and elasto-viscoplastic constitutive models for sandy soils and clays. In the FEM, u-p(solid phase displacement-pore water pressure) formulation is adopted. From the numerical results, effect of liquefaction on the single pile-soil interaction has been clarified.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fifth Conference

Publisher

University of Missouri--Rolla

Publication Date

4-13-2004

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 13th, 12:00 AM Apr 17th, 12:00 AM

Effects of Liquefaction on the Numerical Analysis of a Single Pile-Soil Interaction During Earthquakes

New York, New York

Dynamic behavior of pile-foundations during earthquakes is important for the performance of many foundations. To clarify the mechanism of the soil-pile interaction, we have conducted a series of numerical analysis of a single pile foundation in the different types of a two-layer ground. Upper layer of the ground is composed of dense sand, reclaimed soils, medium dense sand or loose sand, and the lower layer of the ground is composed of clayey soils. In the liquefaction analysis, we have used a fully coupled effective stress analysis method with the cyclic elasto-plastic and elasto-viscoplastic constitutive models for sandy soils and clays. In the FEM, u-p(solid phase displacement-pore water pressure) formulation is adopted. From the numerical results, effect of liquefaction on the single pile-soil interaction has been clarified.