Regression and trend analysis of LEAP 2020 experimental results

Mourad Zeghal, Alejandro Sepulveda, Majid T. Manzari, Bruce Kutter, Tarek Abdoun, Stuart K. Haigh, Wen Yi Hung, Evangelia Korre, Gopal S.P. Madabhushi, Satish Manandhar, Mitsu Okamura, Kyohei Ueda, Yan Guo Zhou

Research output: Contribution to journalArticlepeer-review

Abstract

The LEAP-2020 comprised a series of 23 centrifuge experiments of a saturated Ottawa sand (backfill) deposit supported by a cantilever wall. The experiments covered a comprehensive range of experimental conditions. The deposits had a relative density that varied from 49% to 76% and the centrifuge models were subjected to input motions that varied in amplitude and frequency content. The experimental results were consequently marked by a broad spectrum of response characteristics. A Gaussian Process Regression (GPR) was employed to investigate and assess the trends and response mechanisms of permanent lateral displacements, settlements, wall rotation and pore pressure buildups of the tested soil-retaining wall systems. The analyses showed a high level of consistency among the experimental results and shed light on a number of salient response characteristics.

Original languageEnglish (US)
Article number108755
JournalSoil Dynamics and Earthquake Engineering
Volume183
DOIs
StatePublished - Aug 2024

Keywords

  • Centrifuge experiment
  • Dynamic response
  • Gaussian process regression
  • Lateral displacement
  • Liquefaction
  • Response surface
  • Settlement
  • Soil-retaining wall

ASJC Scopus subject areas

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

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