ソイルパイプを有する地盤の力学特性に関する基礎的検討  [in Japanese] Basic study on mechanical properties of ground having soil pipes  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

盛土や斜面に繰返し雨水が浸透することにより土粒子が流出しパイプ状の水みちができる場合があり,ソイルパイプと呼ばれる.浸透した雨水を速やかに排水する効果が期待されるものの,何らかの理由で水みちが閉塞された場合は一転して危険であるうえ,土構造内に空隙を有することになり構造上の弱点となりうる.本研究では,三軸試験供試体内にグルコースを溶解させることにより人工的なパイプ生成を試み,供試体の変形強度特性に対するパイプの数や拘束圧,土の密度の影響を調べた.

Piping, known as a complex phenomenon of internal erosion, presents a great risk for hydraulic structures. In this research, artificial piping in laboratory was created by dissolving glucose column in uniform fine (Toyoura) sand. Properties of loosened sand due to piping effect were studied through a series of triaxial tests under different densities, pipe number and confining pressure. Piping propagation was observed according to the axial strain, radial strain and volumetric strain measured by local transducers. Furthermore, Young's modulus and Poisson's ratio of sand with internal pipes were also evaluated under cyclic loading before and after loosening.

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 66(4), 341-344, 2014

    Institute of Industrial Science The University of Tokyo

Codes

  • NII Article ID (NAID)
    130004691222
  • NII NACSIS-CAT ID (NCID)
    AN00127075
  • Text Lang
    JPN
  • Journal Type
    大学紀要
  • ISSN
    0037-105X
  • NDL Article ID
    025809930
  • NDL Call No.
    Z14-198
  • Data Source
    NDL  J-STAGE 
Page Top