CHARACTERISTICS OF VACUUM CONSOLIDATION

2008 Fiscal Year Final Research Report

• 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
• Keywords: 真空圧密 / 圧密試験 / 土圧係数 / 側方変位 / 地盤改良

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) Pages: doi : 10.1680/geot.8. T.020
  • 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] 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
• [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
  • Year and Date: 20080000
• [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
  • Year and Date: 20070000
• [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
  • Year and Date: 20070000
• [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
  • Year and Date: 20060000