A nonlinear spectral element model for the simulation of traffic speed deflectometer tests of asphalt pavements

  • Sun, Z. (author)
  • Kasbergen, C. (author)
  • Scarpas, Athanasios (author)
  • van Dalen, K.N. (author)
  • Anupam, K. (author)
  • Erkens, S. (author)
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Publication date
January 2020
Publisher
Informa UK Limited

Abstract

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 m...

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