Shear behaviour of sand-concrete interface with side post-grouting considering the unloading effect

Yi Fei, Noriyuki Yasufuku, Chunfeng Zhao, Cheng Zhao, Kai Xu

研究成果: Contribution to journalArticle査読

抄録

Side post-grouting bored-pile foundations are widely used in geotechnical engineering. However, few studies have focused on analyzing the shear behaviour of soil and concrete while considering the grouting process. A total of 48 groups of self-developed, large-scale direct shear experiments were conducted to investigate the shear behaviour of sand-concrete interface with side-grouting, focusing on the effect of soil stress unloading and the on-site roughness measurements of bored pile. The influence of the grouting volume V, unloading rate α and interface roughness R on the shear behaviour are discussed, and the grouting modes and shear band deformation are investigated. The experimental results indicated that the grouting volume has a limited effect on improving the shear strength, and an optimal grout quantity will exist in post-grouting engineering. In addition, the unloading has a non-negligible influence on the grouting modes.

本文言語英語
ページ(範囲)1440-1449
ページ数10
ジャーナルSoils and Foundations
60
6
DOI
出版ステータス出版済み - 12 2020

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 地盤工学および土木地質学

フィンガープリント

「Shear behaviour of sand-concrete interface with side post-grouting considering the unloading effect」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル