Wind and Structures

  • 제17권5호
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  • Pages.479-494
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  • 2013
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Vehicle-induced aerodynamic loads on highway sound barriers part 2: numerical and theoretical investigation

  • Wang, Dalei (Department of Bridge Engineering, Tongji University) ;
  • Wang, Benjin (Department of Bridge Engineering, Tongji University) ;
  • Chen, Airong (Department of Bridge Engineering, Tongji University)
  • 투고 : 2013.05.26
  • 심사 : 2013.07.07
  • 발행 : 2013.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

The vehicle-induced aerodynamic loads bring vibrations to some of the highway sound barriers, for they are designed in consideration of natural wind loads only. As references to the previous field experiment, the vehicle-induced aerodynamic loads is investigated by numerical and theoretical methodologies. The numerical results are compared to the experimental one and proved to be available. By analyzing the flow field achieved in the numerical simulation, the potential flow is proved to be the main source of both head and wake impact, so the theoretical model is also validated. The results from the two methodologies show that the shorter vehicle length would produce larger negative pressure peak as the head impact and wake impact overlapping with each other, and together with the fast speed, it would lead to a wake without vortex shedding, which makes the potential hypothesis more accurate. It also proves the expectation in vehicle-induced aerodynamic loads on Highway Sound Barriers Part1: Field Experiment, that max/min pressure is proportional to the square of vehicle speed and inverse square of separation distance.

키워드

참고문헌

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피인용 문헌

  1. Aerodynamic performance analysis of trains on slope topography under crosswinds vol.23, pp.9, 2016, https://doi.org/10.1007/s11771-016-3301-z
  2. Full scale experiments on vehicle induced transient loads on roadside plates vol.136, 2015, https://doi.org/10.1016/j.jweia.2014.10.010
  3. Full scale experiments on vehicle induced transient pressure loads on roadside walls 2017, https://doi.org/10.1016/j.jweia.2017.06.012
  4. A novel computer vision-based monitoring methodology for vehicle-induced aerodynamic load on noise barrier pp.15452255, 2018, https://doi.org/10.1002/stc.2271
  5. Integrated Evolutionary Algorithms/Computational Fluid Dynamics for Drag Reduction in Highway Design vol.27, pp.3, 2013, https://doi.org/10.1061/(asce)is.1943-555x.0000625