THEORETICAL ANALYSIS OF FALLING WEIGHT DEFLECTOMETER MEASUREMENTS AND THEIR INTERPRETATION
The analysis of the FWD is based on mathematical and physical interpretations. A rolling wheel is modelled on a viscoelastic halfspace; result: a simulation by means of an elastostatic model is not possible. A haversine load pulse on the viscoelastic halfspace and after that on a two-layer halfspace, first layer with viscoelastic and second layer with elastic properties, is analyzed, without taking inertia and damping effects into account; result: determination of modulus E and the determination of any response is possible by means of an elastostatic model. A sinusoidal load is analyzed in order to get information about inertia and damping effects; result: inertia and damping effects have only a very low influence on the FWD-deflections, and the wave dispersion show negligible effects. (A) For the covering abstract of the conference see IRRD 873950.
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Corporate Authors:
STEERING COMMITTEE CAPSA '94
PO BOX 6946
ROGGEBAAI, South Africa 8012 -
Authors:
- HURTGEN, H
- STRAUBE, E
- BECKEDAHL, H
- Conference:
- Publication Date: 1994
Language
- English
Media Info
- Features: References;
- Pagination: IV74-IV90
Subject/Index Terms
- TRT Terms: Conferences; Curvature; Deflectographs; Dynamics; Finite element method; Loads; Mathematical models; Modulus of elasticity; Pavement layers; Viscoelasticity
- ITRD Terms: 8525: Conference; 6187: Deflectograph; 2870: Degree of curvature; 5473: Dynamics; 6490: Finite element method; 5567: Load; 6473: Mathematical model; 5919: Modulus of elasticity; 2931: Multicourse; 5935: Viscoelasticity
- Subject Areas: Data and Information Technology; Highways; Pavements;
Filing Info
- Accession Number: 00714413
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD
- Created Date: Dec 27 1995 12:00AM