CHARACTERISTICS OF VACUUM CONSOLIDATION

• Project/Area Number: 18560488
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Saga University
• Principal Investigator: CHAI Jinchun Saga University, 理工学部, 教授 (20284614)
• Co-Investigator(Kenkyū-buntansha): HAYASHI Sigenori 佐賀大学, 低平地研究センター, 教授 (80112308)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,950,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥450,000); Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2006: ¥2,000,000 (Direct Cost: ¥2,000,000)
• Keywords: 真空圧密 / 圧密試験 / 土圧係数 / 側方変位 / 地盤改良 / 側方変異 / バーチカルドレーン

Research Abstract

室内圧密試験とモデル試験によって、真空圧密の特性を検討した。(1)真空圧密の沈下量は、同じ大きさの載荷によるものと同じか小さい。(2)両面排水地盤条件での真空圧密沈下量は片面排水のものより小さい。(3)両面排水地盤状態で真空圧密とバーチカルドレーン(PVD)工法を併用する場合、PVDの最適打設深度が存在する。

Research Products

• [Journal Article] Comparison of vacuum consolidation with surcharge load induced consolidation of a two-layer system (2009)
  • Author(s): Chai, J.-C., Matsunaga, K., Sakai, A. and Hayashi, S.
  • Journal Title: Geotechnique Vol.59(現在オンライン発表、9月印刷物が出る)
  • Peer Reviewed
• [Journal Article] Comparison of vacuum consolidation with surcharge load induced consolidation of a two-layer system (2009)
  • Author(s): Chai, J. -C., Matsunaga, K., Sakai, A., Hayashi, S.
  • Journal Title: Geotechnique(イギリス土木学会) 59
  • Peer Reviewed
• [Journal Article] Preloading clayey deposit by vacuum pressure with cap-drain : Analyses versus performance (2008)
  • Author(s): Chai, J.-C., Miura, N. and Bergado, D. T.
  • Journal Title: Geotextiles and Geomembranes Vol.26, No.3 Pages: 220-230
  • Peer Reviewed
• [Journal Article] Preloading clayey deposit by vacuum pressure with cap-drain: Analyses versus performance (2008)
  • Author(s): Chai, J.C., Miura, N.and Bergabo, D.T
  • Journal Title: Geotext and Geomembranes 26(5月掲載予定)
  • Peer Reviewed
• [Journal Article] Vacuum consolidation and its combination with embankment loading (2006)
  • Author(s): Chai, J.-C., Carter J. P. and Hayashi S.
  • Journal Title: Canadian Geotechnical Journal Vol.43, No.10 Pages: 985-996
  • Peer Reviewed
• [Journal Article] Vacuum consolidation and its combination with embankment loading (2006)
  • Author(s): Chai, J.-C, Carter J.R, Hayashi S
  • Journal Title: Canadian Geotechnical Journal 43・10 Pages: 985-996
• [Journal Article] Preloading clayey deposit by vacuum pressure with Cap-drain (2006)
  • Author(s): Chai, J.-C, Miura, N, Bergado, D.T.
  • Journal Title: ジオシンセティックス論文集 21 Pages: 45-52
  • NAID: 130003450804
• [Presentation] Design methods of PVD installation depth for two-way drainage deposit(基調講演) (2008)
  • Author(s): Chai, J.-C., Miura, N., Kirekawa, T. and Hino, T.
  • Organizer: Proc. of Int. Symposium on Lowland Technology, Busan
  • Place of Presentation: Korea
• [Presentation] Design methods of PVD installation depth for two-way drainage deposit. Proc. of (2008)
  • Author(s): Chai, J. -C., Miura, N., Kirekawa, T., Hino, T.
  • Organizer: Int. Symposium on Lowland Technology(低平知に関する国際シンポジウム2008)
  • Place of Presentation: 韓国釜山
• [Presentation] Characteristics of vacuum consolidation comparing with surcharge load induced consolidation. (2007)
  • Author(s): Chai, J.-C, Sakai, A., Hayashi, S.and Hino, T.
  • Organizer: International Symposium on Geotechnical Engineering, Ground Improvement and Geosynthetics for Human Security and Environmental Preservation
  • Place of Presentation: タイ、バンコク
  • Year and Date: 2007-12-06
• [Presentation] Experimental investigation on optimum installation depth of PVD under vacuum consolidation. (2007)
  • Author(s): Chai, J.-C., Miura, N., and Nomura, T.
  • Organizer: 3rd Sino-Japan Geotechnical Symposium
  • Place of Presentation: 中国重慶
  • Year and Date: 2007-11-05
• [Presentation] Characteristics of vacuum consolidation comparing with surcharge load induced consolidation(基調講演) (2007)
  • Author(s): Chai, J.-C, Sakai, A., Hayashi, S. and Hino, T.
  • Organizer: Proc. of Int. Symposium on Geotechnical Engineering, Ground Improvement and Geosynthetics for Human Security and Environmental Preservation, Proc. of Int. Symposium on Geotechnical Engineering, Ground Improvement and Geosynthetics for Human Security and Environmental Preservation
  • Place of Presentation: Bangkok, Thailand
• [Presentation] Experimental investigation on optimum installation depth of PVD under vacuum consolidation (2007)
  • Author(s): Chai, J.-C., Miura, N., and Nomura, T.
  • Organizer: Proc. of 3^<rd> Sino-Japan Geotechnical Symposium(China Communications Press)
  • Place of Presentation: Chongqing, China
• [Presentation] Preloading clayey deposit by vacuum pressure with Cap-drain (2006)
  • Author(s): Chai, J.-C., Miura, N., and Bergado, D. T.
  • Organizer: Proc. of 21^<th> Geosynthetics Symposium(International Geosynthetics Society, 21)
  • Place of Presentation: Japan