Location

St. Louis, Missouri

Presentation Date

04 Apr 1995, 2:30 pm - 3:30 pm

Abstract

Larger scale dynamic centrifuge modeling has been used to examine the behavior of a soilpile-structure system during earthquake-induced liquefaction. The model consisting of a 3 x 3-pile supported structure and a saturated sand deposit was constructed in a laminar container with the inside dimensions of 74-cm length, 50-cm height and 34-cm width. Test results show that liquefaction occurred only within a finite zone in the saturated sand deposit subjected to a strong input shaking that corresponds to a maximum earthquake acceleration of 0.3 g induced probably in actual ground, which agrees well with the results of earthquake damage investigation; moreover, larger induced bending strains of foundation piles were concentrated near the interface between liquefied and non-liquefied soil layers. This concentration of bending strain may be attributed to remarkable reduction in shear resistance of liquefied soil layer relat1ve to that of non-l1quef1ed so1l layer.

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

Creative Commons License
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

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Soil-Pile-Structure during Liquefaction on Centrifuge

St. Louis, Missouri

Larger scale dynamic centrifuge modeling has been used to examine the behavior of a soilpile-structure system during earthquake-induced liquefaction. The model consisting of a 3 x 3-pile supported structure and a saturated sand deposit was constructed in a laminar container with the inside dimensions of 74-cm length, 50-cm height and 34-cm width. Test results show that liquefaction occurred only within a finite zone in the saturated sand deposit subjected to a strong input shaking that corresponds to a maximum earthquake acceleration of 0.3 g induced probably in actual ground, which agrees well with the results of earthquake damage investigation; moreover, larger induced bending strains of foundation piles were concentrated near the interface between liquefied and non-liquefied soil layers. This concentration of bending strain may be attributed to remarkable reduction in shear resistance of liquefied soil layer relat1ve to that of non-l1quef1ed so1l layer.