カキ殻混合土の非排水せん断強度・変形特性  [in Japanese] UNDRAINED SHEAR CHARACTERISTICS OF DREDGED SLUGES MIXED WITH CRASHED OYSTER SHELL  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

破砕したカキ殻と浚渫粘土の混合土を地盤材料として活用するため, カキ殻混合土の非排水せん断強度・変形特性が純粋な粘土のそれとどのように異なるかを三軸試験から検討した. その結果, カキ殻の混合は浚渫粘土の強度・変形特性を改善することがわかった. そのせん断強度の増加は, カキの混合率 (0-80%) にほぼ比例し, 圧密応力 (49-98kPa) によらなかった, また, 応力-ひずみ関係と間隙水圧発生特性から, カキ殻混合土中のカキ殻の構造はその圧密応力, カキ殻混合率, せん断ひずみレベルに応じて複雑に変化することが推察された. また, 均質化法に基づく数値解析から, カキ殻の割線変形係数を評価することによって, カキ殻の混合による変形係数改善効果の評価を試みた.

In order to utilize mass of oyster shells for a partial substitute material for reclamation, we investigate the undrained shear characteristics of dredged sludge mixed with oyster shells by tri-axial compression test and numerical analysis based upon the mathematical homogenization. The following conclusions can be obtained from this study. It is verified that the shear strength of dredged clay is improved by mixing with oyster shells. The increase of the undrained shear strength is almost proportional for mixing rate (0-80%) of the oyster shell, and it is independent of consolidation stress (49-98kPa). And, it was guessed that the structure of the oyster shell in mixed soil complicatedly changed from stress-strain relationship and pore water pressure generation characteristic in proportion to the consolidation stress, oyster shell mixing rate, and the shear strain level.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu 701, 303-314, 2002-03-21

    Japan Society of Civil Engineers

References:  15

Codes

  • NII Article ID (NAID)
    10008001847
  • NII NACSIS-CAT ID (NCID)
    AN10014020
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    02897806
  • NDL Article ID
    6100866
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-6
  • Data Source
    CJP  NDL  J-STAGE 
Page Top