1995年兵庫県南部地震の観測記録を用いた液状化地盤における杭基礎構造物の応答に関する解析的検討

書誌事項

タイトル別名
  • RESPONSE OF PILE FOUNDATION IN LIQUEFIED SOIL DEPOSIT DURING THE HYOGO-KEN NANBU EARTHQUAKE OF 1995
  • 1995ネン ヒョウゴケン ナンブ ジシン ノ カンソク キロク オ モチイタ

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抄録

Pile foundation in the reclaimed soil were severely damaged during the Hyogo-ken Nanbu Earthquake, January 17, 1995. These damages were obviously attributed to nonlinear soil-pile foundation interaction. The objective of this study is to investigate the responses of a structure supported on a pile foundation in the liquefied soil deposit. Earthquake response analyses of structure on pile foundation are conducted using the numerical model that takes into account the effect of excess pore water pressure. The observed strong motion in the borehole array at the Port Island are employed as an input motion to the soil-pile foundation-structure system. It is found that structure responses are greatly affected by soil liquefaction, and that large pile bending moments are mainly caused by the kinematic interactions at the pile head and at GL-19m, the lower boundary of the reclaimed soil.

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