@article{oai:kanazawa-u.repo.nii.ac.jp:00058746, author = {Miyajima, Masakatsu and Nozu, Satoru and Kitaura, Masaru and Yamamoto, Masaki and 宮島, 昌克 and 野津, 智 and 北浦, 勝 and 山本, 真樹}, issue = {647}, journal = {土木学会論文集, Doboku Gakkai Ronbunshu}, month = {Apr}, note = {本研究は, リアルタイム地震防災の観点から地震直後に液状化の発生範囲を知ることを目標とし, その第1段階として, 地表面に置かれた強震計で捉え得る液状化地盤特有の地震動特性を定量的に判定する方法を提案するものである. 本論文では, 液状化地盤における地盤震動特性として, 振幅特性と振動数特性のそれぞれに注目して液状化検知指標を提案するとともに, 地盤震動特性が液状化地盤と類似している軟弱地盤における強震記録に本検知指標を適用し, その信頼性を検証した. さらに, 100地点の強震記録に本論文で提案した液状化検知指標を適用し, その有効性を確認するとともに, 総合的検知法を提案した., The present paper focuses on a detective method of liquefaction using strong ground motion records. First, amplitude characteristics of strong ground motion records were investigated. The time histories of ratio of the vertical ground acceleration to the horizontal one were calculated from the strong ground motion records in liquefied and non-liquefied areas. Next, frequency characteristics of the strong ground motion records were studied. The average predominant frequency during strong motion and the decrease rate of predominant frequency were evaluated. Finally, the detective method of liquefaction was proposed by using these indices., 金沢大学理工研究域地球社会基盤学系}, pages = {405--414}, title = {強震記録を用いた液状化検知法に関する基礎的研究}, volume = {2000}, year = {2000} }