Seismic Response Analysis of Earth Dam with Geostatistical Method and 3-D Survey

Ryota Ohashi, Shin-ichi Nishimura, Minoru Kaneshige, Toshifumi Shibata, Takayuki Shuku

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently, a three-dimensional survey has been developed, using an unmanned aerial vehicle (UAV), which has made the rebuilding of the three-dimensional shape of structures easier. Despite the development of this technique, it has not been adopted for the design of geo-structures. In this study, for the purpose of incorporating the three-dimensional survey technique into the design of geo-structures, an earth-fill dam is surveyed three-dimensionally by a drone, and its three-dimensional finite element model is made based on the survey results. Finally, the FEM model is applied to a seismic response analysis, in which a search is made for the structurally weak locations inside the dam. The rigidity inside the earth-fill dam is interpolated based on the results of Swedish weight sounding (SWS) tests. The three-dimensional kriging method, one of the geostatistical methods, is used as the interpolation method. According to the analytical results, the locations of high acceleration or high shear stress inside the earth-fill dam are identified.

Original languageEnglish
Title of host publicationChallenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 3
EditorsMarco Barla, Alessandra Insana, Alice Di Donna, Donatella Sterpi
PublisherSpringer Science and Business Media Deutschland GmbH
Pages387-394
Number of pages8
ISBN (Print)9783031128509
DOIs
Publication statusPublished - 2023
Event6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022 - Turin, Italy
Duration: Aug 30 2022Sep 2 2022

Publication series

NameLecture Notes in Civil Engineering
Volume288 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022
Country/TerritoryItaly
CityTurin
Period8/30/229/2/22

Keywords

  • 3-D kriging
  • Finite element model
  • Seismic response analysis
  • Three-dimensional survey

ASJC Scopus subject areas

  • Civil and Structural Engineering

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