Study on hypoplastic constitutive modeling of rockfill and its application

Weijun Cen*, Xiuxin Wang, Erich Bauer, Yueming Zhu

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Hypoplastic constitutive theory, which was originated from the middle and late stage of the 20th century, is a new type of soil constitutive theory based on rational mechanics. Hypoplastic theory can reflect inelasticity, nonlinearity, dilatancy and other main mechanical properties of granular material. The origin and development, general representation of hypoplastic constitutive model are introduced; and mechanical and mathematical analysis is made. Besides, the modeling thought of recently updated hypoplastic models is briefly introduced based on the study of the relation between void ratio and mean pressure and the relation between void ratio and volumetric strain of granular soil. Combining with the analysis of main mechanical properties of rockfill, the Gudehus-Bauer hypoplastic model which can reflect the latest international hypoplastic research level is modified properly and applied to constitutive modeling of rockfill. Finally, the new modified model is used in the hypoplastic numerical analysis of deformation and stress of a typical concrete face rockfill dam. Theoretical analysis and engineering application show that the new updated model can reflect inelasticity, nonlinearity, dilatancy and other main mechanical behaviors of rockfill and has the advantage of wide adaptability of constitutive parameters.

Original languageEnglish
Pages (from-to)312-322
Number of pages11
JournalChinese Journal of Rock Mechanics and Engineering
Volume26
Issue number2
Publication statusPublished - Feb 2007

Keywords

  • Concrete faced rockfill dam
  • Constitutive modeling
  • Constitutive theory
  • Hypoplasticity
  • Rate type
  • Rock and soil mechanics
  • Rockfill
  • Void ratio

ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

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