粒度とN値による液状化予測判定法:一般化及び検証と連続地震の考慮  [in Japanese] LIQUEFACTION PREDICTION AND ASSESSMENT METHOD BASED ON GRAIN SIZE AND N-VALUES: GENERALIZATION, VALIDATION AND CONSIDERATION OF SEQUENCED EARTHQUAKE MOTIONS  [in Japanese]

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Abstract

本研究では,地震動波形の不規則性と継続時間の影響を考慮した粒度とN値による液状化予測判定法を国内外の多様な液状化予測判定チャートに活用しうるように一般化した.そして,同予測判定結果を東北地方太平洋沖地震における仙台港, 小名浜港, 千葉港, 羽田空港, 及び浦安での被災事例に照らして詳しく検証した結果,レベル2地震動に対する本手法の妥当性及び有効性を明らかにした.又,連続した地震動作用下における液状化予測判定法の適用指針を示した.

 This study presents a new generalized liquefaction prediction and assessment method that takes account of the influence of the waveforms and durations of earthquakes. The new method facilitates universal applications to various types of liquefaction charts. The predicted results were compared and validated against case histories at Sendai Port, Onahama Port, Chiba Port, Haneda Airport and Urayasu City under the 2011 Off the Pacific Coast of Tohoku Earthquake. The results show the validity and effectiveness of the new method for the level 2 earthquakes. This study also presents and discusses its applicability to sequenced earthquake motions.

Journal

  • Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 73(2), I_264-I_269, 2017

    Japan Society of Civil Engineers

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