A nonlinear spectral element model for the simulation of traffic speed deflectometer tests of asphalt pavements
A non-destructive testing method suitable for network-level pavement structural evaluation is the traffic speed deflectometer (TSD) test. However, the analysis of TSD measurements still needs a proper parameter back-calculation procedure, which requires an accurate and efficient forward calculation model. As a first step to solving this issue, a nonlinear spectral element model which can simulate TSD tests of asphalt pavements is developed. The model is used to investigate the characteristics and parameter sensitivity of the response of asphalt pavements caused by the TSD loading. The results indicate that the vertical deflection curve along the direction of movement observed on the asphalt pavement surface is slightly asymmetric, and the maximum deflection appears behind the centre of the loading area. In addition, the slope curve of vertical deflection is highly sensitive to the magnitude of the applied force, the moduli of the base layer and subgrade, and the thicknesses of the asphalt layer and base layer. Furthermore, the slope curve is relatively sensitive to the glassy modulus of the asphalt layer. Because of its good predictive capability and high computational efficiency, the proposed model has the desired characteristics to be used as the computational kernel for parameter back-calculation procedures of TSD measurements.
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/44544515
-
Supplemental Notes:
- © 2020 Zhaojie Sun et al. Published by Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
-
Authors:
- Sun, Zhaojie
-
0000-0002-4219-1816
- Kasbergen, Cor
- Skarpas, Athanasios
- van Dalen, Karel N
- Anupam, Kumar
- Erkens, Sandra M J G
-
0000-0002-2465-7643
- Publication Date: 2022-3
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
- Pagination: pp 1186-1197
-
Serial:
- International Journal of Pavement Engineering
- Volume: 23
- Issue Number: 4
- Publisher: Taylor & Francis
- ISSN: 1029-8436
- Serial URL: http://www.tandf.co.uk/journals/titles/10298436.html
Subject/Index Terms
- TRT Terms: Asphalt pavements; Backcalculation; Deflectometers; Mathematical models; Nondestructive tests; Simulation
- Subject Areas: Highways; Pavements;
Filing Info
- Accession Number: 01840730
- Record Type: Publication
- Files: TRIS
- Created Date: Mar 28 2022 6:19PM