Influence of Consolidation Shear Stress Magnitude and Orientation on Stress-Strain Behavior of Sand under Traffic Loading

Juntian Wang, Yunming Yang, Hai Sui Yu, Qihao Yu, Xiang Li

Research output: Journal PublicationArticlepeer-review

Abstract

Traffic-load-induced principal stress rotation has been widely studied. Most of these tests were conducted using a hollow cylinder apparatus to simulate ground-level traffic conditions, and only one shear direction was considered. However, fewer studies focused on the stress conditions of subsoil below slopes or embankments, which involved bidirectional shear. In this study, a series of bidirectional cyclic simple shear tests were performed using the variable-direction dynamic cyclic simple shear apparatus to investigate the effects of multidirectional principal stress rotation on sand induced by traffic loads. The specimens were first K α-consolidated with various static shear stresses and then subjected to traffic-induced cyclic shearing in different directions. The experimental results showed that both the magnitude and orientation of the initial static shear stress had significant effects on sand strain development and stress-strain behavior. A larger angle led to a higher axial strain, while larger initial shear stresses led to stiffer sand responses.

Original languageEnglish
Article number04022285
JournalInternational Journal of Geomechanics
Volume23
Issue number2
DOIs
Publication statusPublished - 1 Feb 2023

Keywords

  • Bidirectional cyclic shear
  • Principal stress rotation
  • Settlement of sandy pavement
  • Traffic load

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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