Seismic responses of mono-pile foundation in liquefiable sandy soil

Chung Jung Lee, Wen Yi Hung, Yi Chun Tu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A series of centrifuge shaking table tests of mono-pile embedded in the liquefiable sand deposit and dry sand deposit was conducted at an acceleration of 80-g. Two natural frequencies were identified by means of the Fourier spectrum of acceleration measured at the tip mass attached at different elevations in the pre-shaking. The maximum bending moment of pile in dry sand appeared at the depth of 4 m (z/L=0.2) and the maximum bending moment of pile in saturated liquefiable sand appeared at the depth of 8-9 m (z/L= 0.39-0.43). The earthquake induced bending moments and the pile displacements became larger if the tip mass fixed at the higher elevation of the monopile. The occurrence of liquefaction would lead to the loss of confinement from the surrounding sand.

Original languageEnglish
Title of host publicationProceedings of the 24th International Ocean and Polar Engineering Conference, ISOPE Busan
PublisherInternational Society of Offshore and Polar Engineers
Pages60-65
Number of pages6
ISBN (Print)9781880653913
StatePublished - 2014
Event24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan - Busan, Korea, Republic of
Duration: 15 Jun 201420 Jun 2014

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference24th International Ocean and Polar Engineering Conference, ISOPE 2014 Busan
Country/TerritoryKorea, Republic of
CityBusan
Period15/06/1420/06/14

Keywords

  • Bending moment
  • Centrifuge shaking table test
  • Liquefaction of sand
  • Mono-pile

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