Dynamic amplification of an orthotropic, multi span bridge deck under moving truck with tandem axles

Youcef Fisli, Abdelouahab Rezaiguia, Salah Guenfoud, Debra Laefer, Mounia Kaddeche

Research output: Contribution to journalArticle

Abstract

Vehicles crossing bridges at high speeds can cause significant dynamic effects and must be studied by accurately simulating the interactive, dynamic responses of the bridge deck and the load-applying vehicles. Specifically, a multispan, orthotropic, bridge deck during truck loading is investigated to better understand the dynamic interaction between moving vehicles with tandem axles and highway bridge decks. The vehicle is modeled by a three-dimensional dynamic system with tandem axles with 9 degrees of freedom. The bridge deck is modeled by a thin, orthotropic, multi-span plate. The road surface irregularities are modeled by a random function characterized by a spectral roughness coefficient and power spectral density. The modal method is used to solve the equation of motion of the bridge deck. Equations of motion of the vehicle are obtained using a virtual work principle. The coupled equations of motion vehicle/bridge deck are integrated numerically by Newmark’s method. A computational algorithm in FORTRAN is used to solve the integrated equations of motion in a decoupled, iterative process. A numerical example of an orthotropic, three-span bridge deck, excited in nine degrees of freedom truck is presented. The resulting distribution of the Dynamic Amplification Factor on the bridge deck does not reflect any particular trend, because high values of the DAF can be obtained at points where the vertical displacement is small. The DAF is significant only under the interaction force. Thus, the road surface roughness had a significant influence on the dynamic vehicle/bridge deck interaction forces.

Original languageEnglish (US)
Pages (from-to)523-535
Number of pages13
JournalLecture Notes in Mechanical Engineering
Volume789
DOIs
StatePublished - 2015

Fingerprint

Bridge decks
Axles
Trucks
Amplification
Equations of motion
Surface roughness
FORTRAN (programming language)
Highway bridges
Power spectral density
Dynamic response
Dynamical systems

Keywords

  • Dynamic interaction
  • Orthotropic bridge deck
  • Tandem axles
  • Vehicle

ASJC Scopus subject areas

  • Mechanical Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Fluid Flow and Transfer Processes

Cite this

Dynamic amplification of an orthotropic, multi span bridge deck under moving truck with tandem axles. / Fisli, Youcef; Rezaiguia, Abdelouahab; Guenfoud, Salah; Laefer, Debra; Kaddeche, Mounia.

In: Lecture Notes in Mechanical Engineering, Vol. 789, 2015, p. 523-535.

Research output: Contribution to journalArticle

Fisli, Youcef ; Rezaiguia, Abdelouahab ; Guenfoud, Salah ; Laefer, Debra ; Kaddeche, Mounia. / Dynamic amplification of an orthotropic, multi span bridge deck under moving truck with tandem axles. In: Lecture Notes in Mechanical Engineering. 2015 ; Vol. 789. pp. 523-535.
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