JP6815757B2 - 地盤の液状化評価方法 - Google Patents
地盤の液状化評価方法 Download PDFInfo
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- JP6815757B2 JP6815757B2 JP2016115222A JP2016115222A JP6815757B2 JP 6815757 B2 JP6815757 B2 JP 6815757B2 JP 2016115222 A JP2016115222 A JP 2016115222A JP 2016115222 A JP2016115222 A JP 2016115222A JP 6815757 B2 JP6815757 B2 JP 6815757B2
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Description
11 地中加速度計
12 地中間隙水圧計
20 地盤締固め施工機
25 バイブロハンマー(加振機)
26 振動ロッド(振動部)
T 測定箇所
P 加振箇所
Claims (2)
- 評価対象の地盤の液状化強度を評価する地盤の液状化評価方法において、
前記評価対象の地盤に対して1つの測定箇所を設定し、この1つの測定箇所にて前記地盤内の所定深度の少なくとも上方と下方の各深度の位置に地中加速度計と地中間隙水圧計をそれぞれ挿入し、次に、前記地盤を加振機により振動させて、前記1つの測定箇所の前記少なくとも上方と下方の各深度の各位置にそれぞれ配置された前記地中加速度計と地中間隙水圧計により前記振動に伴う前記地盤内の加速度と間隙水圧の変化をそれぞれ連続的に測定して、前記地盤内の深度の異なる前記少なくとも上方と下方の各深度の各位置における前記加速度と間隙水圧のデータをそれぞれ収集し、これら収集したデータに基づいて前記地盤の液状化強度を評価することを特徴とする地盤の液状化評価方法。 - 評価対象の地盤の液状化強度を評価する地盤の液状化評価方法において、
前記評価対象の地盤に対して1つの測定箇所を設定し、この1つの測定箇所にて前記地盤内の所定深度の少なくとも上方と下方の各深度の位置に地中加速度計と地中間隙水圧計をそれぞれ挿入し、次に、前記地盤を加振機の振動部により振動させて、前記1つの測定箇所の深度の異なる前記少なくとも上方と下方の各深度の位置にそれぞれ配置された前記地中加速度計と地中間隙水圧計により前記振動に伴う前記地盤内の加速度と間隙水圧の変化をそれぞれ連続的に測定し、次に、前記加振機の振動部を前記地盤内に下降動させて更に加振することで、前記上下方向の各加振箇所における程度の異なる加速度と間隙水圧のデータをそれぞれ収集し、これら収集したデータに基づいて前記地盤の液状化強度を評価することを特徴とする地盤の液状化評価方法。
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CN108020412B (zh) * | 2018-01-15 | 2024-04-30 | 中铁时代建筑设计院有限公司 | 一种用于水平作动器与反力墙的连接装置 |
CN111650120B (zh) * | 2020-07-09 | 2021-08-31 | 青岛理工大学 | 砂质水底沉积物动力响应试验系统 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS52104309A (en) * | 1976-02-27 | 1977-09-01 | Obayashi Gumi Kk | Discriminating apparatus for liquefaction of subsurface |
US5109702A (en) * | 1990-06-27 | 1992-05-05 | The United States Of America As Represented By The Secretary Of The Air Force | Method for determining liquefaction potential of cohesionless soils |
JPH0820438B2 (ja) * | 1992-08-18 | 1996-03-04 | ヤマモト エンジニアリング コーポレーション | 地層の物理特性の音響波を用いた非破壊測定方法 |
JP2000180561A (ja) * | 1998-12-17 | 2000-06-30 | Ohbayashi Corp | 地盤調査方法 |
JP2000186319A (ja) * | 1998-12-22 | 2000-07-04 | Ohbayashi Corp | 地盤調査方法 |
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