MOVING LOADS ON A VISCOELASTIC DOUBLE LAYER: PREDICTION OF RECOVERABLE AND PERMANENT DEFORMATIONS
In this paper a two layered viscoelastic incompressible system subjected to a sequence of moving loads is considered. Materials characteristics are described by a simple analytical expression for the Creep Compliance function, as verified by laboratory creep experiments carried out on a large class of asphalt concretes. The calculation of the viscoelastic deformations (vertical, transverse and longitudinal strains) and vertical surface dispacements is performed with reference to three orders of effects: 1) the passenger of a single load; 2) the accumulation of the recoverable viscoelastic deformation due to a sequence of moving loads; this effect arises from the viscoelastic delay in deformation recovery; 3) the calculation of the permanent deformations due to each single load passage when the existence of a Maxwell model in series is assumed in the rheological model defining the characteristics of the first layer. Interface conditions can be varied choosing rigidly bounded layers or frictionless slip.
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Supplemental Notes:
- Volume I of proceedings of 4th International Conference on Structural Design of Asphalt Pavements, Ann Arbor, Michigan, August 22-26, 1977.
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Corporate Authors:
University of Michigan, Ann Arbor
Department of Civil Engineering
Ann Arbor, MI United States 48109 -
Authors:
- Battiato, G
- Ronca, G
- Verga, C
- Conference:
- Publication Date: 1977-1
Media Info
- Features: Figures; References;
- Pagination: p. 459-466
Subject/Index Terms
- TRT Terms: Asphalt concrete; Boundary layer; Creep; Deformation; Dynamic loads; Forecasting; Mathematical models; Pavement design; Surface phenomena; Viscoelasticity
- Uncontrolled Terms: Models; Recovery
- Subject Areas: Highways; Pavements;
Filing Info
- Accession Number: 00170230
- Record Type: Publication
- Report/Paper Numbers: Proceeding
- Files: TRIS
- Created Date: Mar 14 1978 12:00AM