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Effects of air relief openings on the mitigation of solitary wave forces on bridge decks

  • Sheng-chao Xiao (肖圣超)
  • An-xin Guo (郭安薪)Email author
Article
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Abstract

For inverted T-type bridge decks, air entrapped in the chambers between adjacent girders could increase wave forces and lead to the destruction of bridge decks. This study presents the effects of air relief openings (ARO) on the mitigation of solitary wave-induced forces on bridge decks. Hydrodynamic experiments were conducted for three inverted T-type decks with four, five, and six girders with different wave properties and deck clearances. The open source computational fluid dynamics toolbox OpenFOAM was adapted to provide numerical insight into the effects of AROs. Since the numerical results correlate well with the measurements, the mechanism of wave-structure interaction is presented by the numerical flow fields. Furthermore, the relationship between the shape and volume of an ARO and wave forces on bridge decks, together with the importance of each ARO in the effect of wave force mitigation, was also presented from the numerical results of OpenFOAM. Experimental and numerical results demonstrated that AROs could effectively reduce the vertical wave forces on bridge decks significantly. The effects of AROs increased with increasing volume of the ARO, while the shape of the ARO had no effect on the reduction of wave forces.

Key words

Air entrapped hydrodynamic experiment solitary wave forces bridge decks OpenFOAM 

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Copyright information

© China Ship Scientific Research Center 2018

Authors and Affiliations

  • Sheng-chao Xiao (肖圣超)
    • 1
    • 2
  • An-xin Guo (郭安薪)
    • 1
    Email author
  1. 1.Ministry-of-Education Key Laboratory of Structural Dynamic Behavior and Control, School of Civil EngineeringHarbin Institute of TechnologyHarbinChina
  2. 2.Department of Civil EngineeringThe University of QueenslandBrisbaneAustralia

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