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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2013  >  13(6): 28-35
ZHANG Jie, GAO Guang-jun, LI Jing-juan. Height optimization of windbreak wall with holes on high-speed railway bridge[J]. Journal of Traffic and Transportation Engineering, 2013, 13(6): 28-35.
Citation: ZHANG Jie, GAO Guang-jun, LI Jing-juan. Height optimization of windbreak wall with holes on high-speed railway bridge[J]. Journal of Traffic and Transportation Engineering, 2013, 13(6): 28-35.
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Height optimization of windbreak wall with holes on high-speed railway bridge

  • 1.

    School of Traffic and Transportation Engineering, Central South University, Changsha 410075, Hunan, China

  • 2.

    Key Laboratory of Traffic Safety on Track of Ministry of Education, Central South University, Changsha 410075, Hunan, China

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  • Author Bio:

    ZHANG Jie (1987-), male, doctoral student, +86-731-82656673, jie_csu@csu.edu.cn

    GAO Guang-jun(1973-), male, professor, PhD, +86-731-82656673, gjgao@csu.edu.cn

  • Received Date: 2013-07-18
  • Publish Date: 2013-12-25
    Abstract
  • Based on 3D steady N-S equation and k-ε double-equation turbulent model, the influence of height of windbreak wall with holes on high-speed railway bridge on train aerodynamic performance was simulated by using finite volume method. The relationships among train overturning moment, wind speed at catenary position and the height were analyzed, and the accuracy of present numerical method was validated combining with wind tunnel test. Analysis result shows that after the installment of windbreak wall, the equivalent coefficient absolute values of lateral force and overturning moment decrease speedily with the increase of the height. At the same height, the equivalent coefficient of lift force of train located at leeward line is as half as that at windward line. As there are no windbreak wall or train on bridge, the lateral wind speeds at two lines'catenary position are almost equal, the speeds rise sharply by 28.9% and 27.2%respectively when the train passes windward line and leeward line. After the installment of windbreak wall, the lateral wind speed at catenary position tends to decline with the increase of the height, and the leeward line wind speed reduces rapidly. Whether it is single-side or doubleside windbreak wall, the reasonable height of windbreak wall with holes on high-speed railway bridge is 2.8m.

     

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