Constitutive Behavior of Fabric Reinforced/Encapsulated Soil.
Abstract
The stress-strain-time response of sand reinforced with continuous, orientated fabrics (geotextiles) was measured experimentally in triaxial compression tests. Similar tests were run on sand samples reinforced with discrete, randomly distributed fibers. Both striking similarities and interesting differences were observed in the mechanaical response and failure modes for these two types of reinforced soil. Quasi-uniaxial compression tests were run on sand samples that were both internally reinforced and externally encapsulated in fabric as well. A finite element model was developed to predict the behavior of a soil-fabric composite under either plane strain or axysymetric loading. A special apparatus was constructed to measure experimentally the load-deformation behavior of fabrics under in-isolation vs. in-soil conditions. The dynamic response of sand reinforced with both discrete, randomly distributed fibers and parallel arrays of oriented fibers is under investigation. The influence of critical inclusion properties (e.g., concentration, aspect ratio, stiffness) and test parameters (e.g., mean confining stress, strain amplitude) on the dynamic shear modulus and damping ratio of fiber reinforced sand are being studied.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 20, 1986
- Accession Number
- ADA177148
Entities
People
- Donald H. Gray
Organizations
- University of Michigan