DEVELOPMENT OF NEW DESIGN METHOD FOR HEAVING DUE TO UPLIFT PRESSURE CONSIDERING FRICTION BETWEEN RETAINING WALL AND GROUND

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  • ADACHI Yukio
    社団法人 土木学会 阪神高速道路公団 工務部工務第一課
  • FUJII Yasuo
    社団法人 土木学会 阪神高速道路公団 大阪建設局建設企画部設計課
  • ITO Masato
    社団法人 土木学会 大林組 技術研究所土木基礎・耐震研究室
  • SATO Mineo
    社団法人 土木学会 大林組 土木技術本部設計第1部
  • MATSUI Tamotsu
    社団法人 土木学会 大阪大学大学院 工学研究科土木工学専攻

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Other Title
  • 壁面摩擦力等を考慮した盤ぶくれ照査法に関する研究
  • ヘキメン マサツリョク トウ オ コウリョ シタ バンブクレ ショウサホウ ニ カンスル ケンキュウ

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Description

The depth of water-proof retaining walls is usually determined by heaving due to uplift pressure in cut and cover tunnel construction. The heaving is usually checked by normal force equilibrium on the bottom ground mass of the excavation. However, friction force between ground and retaining wall and shear resistance of the impermeable layer is considered to resist heaving uplift force. Based on centrifuge tests and finite element simulations conducted in this study, it was found out that the resisting forces resist heaving uplift force. A new design method is thus proposed for heaving due to uplift.

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