Generation of surface roughness profiles for inclusion in vehicle-bridge interaction analysis and test application

H. Xu, M. H. Wang, Z. L. Wang, D. S. Yang, Y. H. Liu, Y. B. Yang

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Abstract

Vehicle's wheels were mostly modeled as a point, which can touch the valleys of pavement roughness, creating unrealistic high-frequency oscillation. This can be avoided by using the disk model for the wheels, which however adds significant complexity to the vehicle-bridge interaction (VBI) analysis. In this paper, a refined roughness formula is generated to account for the wheel size effect such that it can be used by point model. Still, the low-frequency part of the roughness presents some masking effect on the bridge scanning by the test vehicle. To this end, two countermeasures are suggested, i.e. residual response and traffic flows. This study has demonstrated that: (1) the roughness generated by the refined formula can reflect the trace of the disk model; (2) the refined formula facilitates the VBI analysis by using the point model; and (3) the two countermeasures for roughness are effective for improving the scanning of bridge frequencies.

Original languageEnglish
Article number2350094
Number of pages31
JournalInternational Journal of Structural Stability and Dynamics
Volume23
Issue number8
DOIs
Publication statusPublished - May 2023

Keywords

  • disk model
  • Pavement surface roughness
  • point model
  • power spectral density (PSD)
  • roughness formula
  • vehicle-bridge interaction (VBI)

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