杭基礎耐震補強に用いる粘性土改良体の引張軟化及び繰返し挙動に関する基礎的検討

• 浦野 和彦

  ハザマ 技術・環境本部 技術研究所

• 足立 有史

  ハザマ 土木事業本部 技術第二部

• 三原 正哉

  メトロ開発(株)

• 山田 淳夫

  ハザマ 技術・環境本部 原子力部

• 河邑 眞

  豊橋技術科学大学 建築・都市システム学系

書誌事項

タイトル別名

• BASIC STUDY ON TENSION SOFTENING AND CYCLIC DEFORMATION BEHAVIOR OF SOLIDIFIED BODY FOR THE COHESIVE SOIL

抄録

 So far, authors have proposed a method to improve earthquake resistance of pile foundations by partially solidifying an underground part of the pile foundations, and the effect of reinforcement has been confirmed by shaking table tests and the lateral loading tests of a full scale model. Though the solidified body is usually designed as an elastic body, it is possible to design the body considering the damage by the tensile stress when a seismic ground motion is assumed to be level 2. Therefore, material tests of the solidified body for the cohesive soil were executed, and the characteristics of the tension softening and the cyclic deformation behavior of the solidified bod y were clarified. Moreover, loading tests that used wall models of the solidified body were executed, and the effects of the shape on the tension softening and the cyclic deformation behavior of the solidified body were clarified. In addition, a numerical simulation by elastoplastic FEM analysis that considers the damage of the solidified body was executed, and the tension softening and the cyclic deformation behavior of the solidified body were reproduced.

収録刊行物

• 土木学会論文集C（地圏工学）

  土木学会論文集C（地圏工学） 67 (4), 500-512, 2011

  公益社団法人 土木学会

キーワード

• soil improvement
• cohesive soil
• plastic-damage
• tensile failure
• strain softening
• cyclic deformation

詳細情報

• CRID: 1390282680331457152
• NII論文ID: 130004559363
• DOI: 10.2208/jscejge.67.500
• ISSN: 21856516
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可