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発表 Evaluation of Seismic Resistance of Pile Foundation in Composite Ground

作成年度 2010年度
論文名 Evaluation of Seismic Resistance of Pile Foundation in Composite Ground
論文名(和訳) 複合地盤における杭の耐震性評価
論文副題
発表会 7th International Conference on Physical Modelling in Geotechnics (第7回地盤の模型実験に関する国際会議)
誌名(No./号数)
発表年月日 2010/06/28 ~ 2010/07/01
所属研究室/機関名 著者名(英名)
寒地地盤チーム冨澤 幸一(TOMISAWA Kouichi)
北海道大学大学院三浦 清一(MIURA Seiichi)
抄録
This paper deals with a reasonable construction method of pile foundation in soft ground or ground subject to liquefaction、 in which prior to constructing piles、 the ground is improved around the pile heads、 and this method was referred as composite ground pile method. In order to verify the earthquake resistance of pile foundation in composite ground、 the horizontal subgrade reaction characteristics of the composite ground to the pile foundation was investigated through a series of static and dynamic centrifuge model tests. In the static tests、 horizontal loading of the pile was carried out before and after shaking with different level of earthquake motion、 the effects of strong earthquake motion on the pile and surrounding improved ground were analyzed. In the dynamic shaking tests、 seismic response of the pile foundation was confirmed under different level of earthquake motion、 and the sufficient earthquake resistance of pile in compositeground was validated.
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