THE MECHANISM OF A LATERAL SPREADING OF THE SATURATED SANDY GROUND

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  • Katada Toshiyuki
    社団法人 土木学会 武蔵工業大学 工学部土木工学科
  • Suemasa Naoaki
    社団法人 土木学会 武蔵工業大学 工学部土木工学科
  • Sudo Masanori
    社団法人 土木学会 五洋建設株式会社 元武蔵工業大学大学院

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  • 砂地盤の側方流動のメカニズム解明とその流動特性
  • スナジバン ノ ソクホウ リュウドウ ノ メカニズム カイメイ ト ソノ リュ

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Abstract

The lateral spreading of a sandy ground destroyed pile foundations and the underground piles. The mechanism of lateral spreading is not clear because the mechanical properties of liquefied sand are not clear. Therefore, the authors developed a new torsional loading apparatus that was able to load until about 100% shear strain. By using this tester, the mechanical properties of liquefied sand were analyzed. On the basis of loading results, the mechanism of a lateral spreading was studied. The stress-strain curve of liquefied sand was formulated and a lateral spreading was numerically simulated. The results of the numerical simulation were compared with the results of the centrifuge model test. Both results were very similar t o each other.

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