Evaluations of load-deformation behavior of soil nail using hyperbolic pullout model

Cheng Cheng Zhang, Qiang Xu, Hong Hu Zhu, Bin Shi, Jianhua Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)

Abstract

Soil nailing, as an effective stabilizing method for slopes and excavations, has been widely used worldwide. However, the interaction mechanism of a soil nail and the surrounding soil and its influential factors are not well understood. A pullout model using a hyperbolic shear stress-shear strain relationship is proposed to describe the load-deformation behavior of a cement grouted soil nail. Numerical analysis has been conducted to solve the governing equation and the distribution of tensile force along the nail length is investigated through a parametric study. The simulation results are highly consistent with laboratory soil nail pullout test results in the literature, indicating that the proposed model is efficient and accurate. Furthermore, the effects of key parameters, including normal stress, degree of saturation of soil, and surface roughness of soil nail, on the model parameters are studied in detail.
Original languageEnglish
Pages (from-to)277-292
Number of pages16
JournalGeomechanics and Engineering
Volume6
Issue number3
DOIs
Publication statusPublished - 1 Mar 2014

Keywords

  • Hyperbolic stress-strain relationship
  • Interface shear resistance
  • Pullout test
  • Soil nail

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

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