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This studyComputational Fluid Dynamics (CFD) wasWind tunnel test focused onAerodynamic static coefficient the interference effectsInterference effect on aerodynamic static coefficientsAerodynamic static coefficient of parallel cable-stayed bridgesParallel cable-stayed bridge through the utilization of wind tunnel testingWind tunnel testing and computational fluid dynamics (CFDComputational Fluid Dynamics (CFD)). The spacing between the parallel decks is configured as a prototype, and wind attack angles are altered in 3-degree increments within the range of − 12 to 12 degrees to investigate their effects on the aerodynamic static coefficientsAerodynamic static coefficient of the parallel decks. 2D steady-state RANS simulations were utilized in the CFDComputational Fluid Dynamics (CFD) analysis of the parallel decks. The findings indicate that the aerodynamic static coefficientsAerodynamic static coefficient of a new bridge are affected by the interference effectsInterference effect arising from the parallel bridge decks and changes in the angle of wind attack. As a result, the drag coefficient observed in parallel configurations for the new bridge was lower compared to the isolated new bridge. The aerodynamic interference of parallel decks has a subtle impact on both the lift and torque coefficients of the upstream and downstream decks. The steady simulation for parallel decks aligns well with the wind tunnel testWind tunnel test data for the small angle of wind attack. However, the advantage of CFDComputational Fluid Dynamics (CFD) lies in its ability to visually represent the flow patterns around the parallel decks.

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Aerodynamic Static Coefficients of Two Parallel Cable-Stayed Bridges by Wind Tunnel Test and CFD

  • 会议论文

  • 发表日期：

    2026年

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  • Jirawat Junruang,
  • Virote Boonyapinyo,
  • Wasin Thangthong

摘要

This studyComputational Fluid Dynamics (CFD) wasWind tunnel test focused onAerodynamic static coefficient the interference effectsInterference effect on aerodynamic static coefficientsAerodynamic static coefficient of parallel cable-stayed bridgesParallel cable-stayed bridge through the utilization of wind tunnel testingWind tunnel testing and computational fluid dynamics (CFDComputational Fluid Dynamics (CFD)). The spacing between the parallel decks is configured as a prototype, and wind attack angles are altered in 3-degree increments within the range of − 12 to 12 degrees to investigate their effects on the aerodynamic static coefficientsAerodynamic static coefficient of the parallel decks. 2D steady-state RANS simulations were utilized in the CFDComputational Fluid Dynamics (CFD) analysis of the parallel decks. The findings indicate that the aerodynamic static coefficientsAerodynamic static coefficient of a new bridge are affected by the interference effectsInterference effect arising from the parallel bridge decks and changes in the angle of wind attack. As a result, the drag coefficient observed in parallel configurations for the new bridge was lower compared to the isolated new bridge. The aerodynamic interference of parallel decks has a subtle impact on both the lift and torque coefficients of the upstream and downstream decks. The steady simulation for parallel decks aligns well with the wind tunnel testWind tunnel test data for the small angle of wind attack. However, the advantage of CFDComputational Fluid Dynamics (CFD) lies in its ability to visually represent the flow patterns around the parallel decks.