Evaluation of stress distribution in model ground using bender elements

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  • OH Sho
    東京大学大学院工学系研究科
  • KUWANO Reiko
    東京大学生産技術研究所　都市基盤安全工学国際研究センター

Bibliographic Information

Other Title
  • ベンダーエレメント法を用いた弾性波測定による模型地盤内応力の推定
  • ベンダーエレメントホウ オ モチイタ ダンセイハ ソクテイ ニ ヨル モケイ ジバン ナイオウリョク ノ スイテイ

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Abstract

Elastic wave tomography using bender elements was conducted to evaluate stress distribution in a model ground. Bender element method has been widely applied in laboratory soil element testing such as triaxial test, oedmeter test, or direct shear test. When BEs are used in a model test, it was found that the signal processing was essential to obtain clearer waveforms as the amplitude of received signal was not large enough due to generally lower level of confining stress. The effects of chamber side wall should be also taken into account in the arrangement of the elements location. In a densely compacted model ground in a trapdoor testing soil chamber, the distribution of stress in the ground was estimated using tomography technique and it agreed well with the results of physically measured stresses at the base and shear planes observed.[This abstract is not included in the PDF]

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 64 (4), 623-627, 2012

    Institute of Industrial Science The University of Tokyo

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