兵庫県南部地震による神戸市ポートアイランドでのボアホール観測記録とそのシミュレーション BOREHOLE RECORDS OBSERVED AT THE PORT ISLAND IN KOBE DURING THE HYOGO-KEN NANBU EARTHQUAKE OF 1995 AND ITS SIMULATION

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Strong motion records of the Hyogo-ken Nanbu earthquake of 1995 observed by the borehole array at the Port Island in Kobe are analyzed to see the effects of soil nonlinearity. The horizontal peak accelerations and the predominant period on the surface are smaller and longer than those in the borehole. We try to simulate the observed accelerograms by using 1-D linear, equivalent linear, and effective stress analyses with the reasonable soil constants derived from the boring survey. The analyses show that a) linear analysis yields much higher accelerations than the observed, b) equivalent linear analysis yields good agreement up to the depth GL-16m but fails to reproduce the surface records, and c) the nonlinear analysis considering excess pore water pressure can reproduce the observed records both on the surface and in the boreholes. The pore pressure ratios of the reclaimed and holocene sand layers reach to almost 100% within 10 seconds from the start of strong shaking. Thanks to this strong liquefaction the peak ground acceleration and velocity at the reclaimed land would be reduced considerably which should be related to the damage distribution in Kobe.

収録刊行物

  • 日本建築学会構造系論文集

    日本建築学会構造系論文集 60(475), 83-92, 1995

    日本建築学会

参考文献:  9件中 1-9件 を表示

被引用文献:  9件中 1-9件 を表示

各種コード

  • NII論文ID(NAID)
    110004303074
  • NII書誌ID(NCID)
    AN10438559
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13404202
  • NDL 記事登録ID
    3623875
  • NDL 刊行物分類
    ME15;NA11
  • NDL 雑誌分類
    ZN1(科学技術--建設工学・建設業)
  • NDL 請求記号
    Z16-1419
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  J-STAGE 
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