Three-dimensional numerical simulation of earthquake damage to group-piles in a liquefied ground

R. Uzuoka, N. Sento, M. Kazama, F. Zhang, A. Yashima, F. Oka

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Dynamic behavior of group-piles in liquefied ground is discussed using numerical analyses. The process of damage to a group-pile foundation in reclaimed land is simulated using three-dimensional soil-water-coupled analysis with a soil-pile-building model. This study analyzed a five-story building that tilted northeastward because of serious pile damage during the 1995 Kobe earthquake. Analyses showed that the piles yielded immediately before complete liquefaction in the reclaimed layer, when the horizontal displacement of the building reached several tens of centimeters. In the early period before complete liquefaction of the reclaimed layer, inertial effects of superstructure on pile curvatures are apparent at both the pile head and at the bottom of the reclaimed layer. In contrast, after complete liquefaction of the reclaimed layer, the kinematic effect of connected footings on curvatures of piles is considerable at the bottom of the reclaimed layer.

Original languageEnglish
Pages (from-to)395-413
Number of pages19
JournalSoil Dynamics and Earthquake Engineering
Volume27
Issue number5
DOIs
Publication statusPublished - 2007 May 1

Keywords

  • Earthquake damage
  • Group-pile
  • Liquefaction
  • Soil-structure interaction
  • Three-dimensional soil-water coupled analysis

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

Fingerprint Dive into the research topics of 'Three-dimensional numerical simulation of earthquake damage to group-piles in a liquefied ground'. Together they form a unique fingerprint.

Cite this