Operational bridge responses due to road surface profile spectral excitations

Wei Ming Li, Hong Ping Zhu, Jing Tu, Yong Xia

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Random spectrum excitation samples of a road surface profile are investigated. The displacements, velocities, accelerations of a vehicle and a bridge structure are discussed using certain samples. The road excitations are numerically simulated by the random phase cosine method of the power spectral density. The vehicle bridge system responses are obtained using the vehicle bridge differential equations for different road surface profiles. It is concluded that the random phase has critical effects on the road surface profile curve shape, and the power spectral density on the curve value. The random samples possesses the same statistical characteristics. The system response values are affected more by the road surface profiles, and the response shapes are affected more as the vehicle velocity varies. Some engineering advice is proposed based on the numerical calculation with the different random excitation inputs for their significant differential responses.
Original languageEnglish
JournalTumu Jianzhu yu Huanjing Gongcheng/Journal of Civil, Architectural and Environmental Engineering
Issue number1
Publication statusPublished - 1 Feb 2009
Externally publishedYes


  • Bridge structure
  • Random samples
  • Road surface profile spectral excitations
  • System response

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction


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