Experimental Investigations in Nonlinear Viscous Behavior of Subgrade Soils Under Traffic-Induced Loading

Details

• Creators:
  Li, Jiang
• Corporate Contributors:
  Morgan State University
• Subject/TRT Terms:
  • Base course (Pavements)
  • Soil structure interaction
  • Soil compaction test
  • Viscosity
  • Triaxial shear tests
  • Subsoil
  • Research reports
  • Constitutive relationship
  • Deviatoric and spherical strain
  • Deviatoric and spherical stress
  More +
• DOI:
  https://doi.org/10.21949/1403227
• Resource Type:
  Research Paper
• Geographical Coverage:
  United States
• Corporate Publisher:
  National Transportation Center (U.S.)
• Abstract:
  This paper concerns experimental investigations of nonlinear viscosity of ; subgrade soils under vehicle-induced loading. Subgrade soil samples--collected ; from the Soil/Aggregate Laboratory at the Geotechnical Exploration Division at ; the Maryland State Highway Administration, Maryland Department of Transportation ; --were used to conduct triaxial shear tests under repeated loading that is ; designed to simulate the cyclic stress induced by vehicles. Investigations in ; this paper included two aspects. First, a nonlinear viscous model has been ; introduced to describe the relation of shear stress and strain rate. This ; relation is reduced from the constitutive law of nonlinear poroviscosity ; suggested by Li (1994, 1999a, 1999b) and Li Helm (1995, 1998). Second, to model ; the viscous behavior of soil under cyclic loading constitutive parameters were ; investigated and calibrated through experimental results from triaxial shear ; tests. In this paper, viscous parameters were assumed to be a function of the ; deviatoric strain and loading repetitions. Viscous behavior of soils changing ; with deviatoric strain and cyclic loading repetition were studied. Supported ; by a grant from the U.S. Department of Transportation, University Transportation ; Centers Program. 56p.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/12660/dot_12660_DS1.pdf
• File Type:
  [PDF - 279.85 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:47cf0f9a8cd7a651bdaa6fb4a202cd457a62fc0b0b1246b3b1c1567564a35212