Optimization of Bridge Windbreak on High-Speed Railway through Strong Wind Area

Zhou, Ling; Liang, Xi Feng; Yang, Meixue; Huang, Sha

doi:10.4028/www.scientific.net/amr.452-453.1518

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Additionally, if necessary, the installation of windbreaks on both sides of the bridge can be considered. The use of windbreaks to reduce wind speed and enhance anti-icing capabilities is a novel research idea for highway bridges, although it has already been extensively applied in railway bridge engineering [14,[28][29][30]. The wind speed, on the other hand, is a geographical characteristic of a region, and the model assumes a constant and continuous wind speed.…”

Section: Wind Speedmentioning

confidence: 99%

Finite Element Method Simulation and Experimental Investigation on the Temperature Control System with Groundwater Circulation in Bridge Deck Pavement

Ni,

Dan,

Bai

et al. 2024

Buildings

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The application of green energy resources is gaining increasing attention in the field of engineering. In cold areas, the groundwater circulation temperature control system (GCTCS) can serve as an auxiliary structure to the bridge deck on highways, effectively preventing the pavement surface from freezing. In this study, a finite element simulation is conducted to establish a bridge structure model of the GCTCS, incorporating both steady-state and transient conditions to investigate its anti-icing performance. Additionally, the influences of various factors, such as wind speed, asphalt concrete layer thickness, groundwater temperature, pipe water flow rate, and pipe spacing, on the temperature of the water film on the pavement surface are investigated and validated through laboratory testing. The results demonstrate that wind speed has a significant influence, with the convective heat loss reaching 90% when the wind speed reaches 10 m/s. Groundwater temperature is the second most influential factor, showing a linear relationship with the water film temperature. Excessive pipe spacing can lead to an uneven temperature distribution on the pavement surface. The thickness of the asphalt concrete layer and the flow rate have minimal effects. However, a low flow rate can result in a significant decrease in the water film temperature. Furthermore, changes in the thermal conductivity of the surface layers also contribute to the anti-icing effect. The simulation analysis of the GCTCS provides valuable guidance for practical engineering in cooler regions where groundwater resources are abundant.

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Section: Wind Speedmentioning

confidence: 99%

Finite Element Method Simulation and Experimental Investigation on the Temperature Control System with Groundwater Circulation in Bridge Deck Pavement

Ni,

Dan,

Bai

et al. 2024

Buildings

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“…Li et al 7 conducted research on the application of windbreaks for railways that are widely and progressively in use and reported about the role of such walls in preventing rollovers of trains. Zhou et al, 8 while studying windbreaks, had concluded that the train pantographs perform better in the presence of windbreaks. Xu et al 9 studied some parameters that proved to be effective on the performance of porous windshields.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional analysis of the influence of windbreaks on airflow over a high-speed train under crosswind using lattice Boltzmann method

Mohebbi

Rezvani

2017

Proceedings of the Institution of Mechanical Engineers, Part F:

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This research is concerned with identifying the effects of windbreak geometry on attenuating aerodynamic loads that can be strong enough to disturb the running safety of high-speed trains. The idea is to suggest the proper geometry for the windbreaks that can make them more efficient and increase their overall performance. Generally speaking, the desired windbreak is the one that can minimize the aerodynamic forces on the surface of trains. In order to reach such an aim, the flow of air around an Intercity-Express 3 high-speed train has been estimated through a two-dimensional modeling by using the lattice Boltzmann method. The flow of crosswind that hits the train is considered as turbulent. The geometry of the windbreaks including the height, the slot, and the edge angles has been investigated. It has been concluded that the windbreak performance, among other parameters, is highly dependent on its height and edge angle. This research expedites the trail for finding suitable choices of windbreak geometries that can in turn provide a reliable degree of running safety of the railway fleet.

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Optimization of Bridge Windbreak on High-Speed Railway through Strong Wind Area

Cited by 2 publications

References 2 publications

Finite Element Method Simulation and Experimental Investigation on the Temperature Control System with Groundwater Circulation in Bridge Deck Pavement

Finite Element Method Simulation and Experimental Investigation on the Temperature Control System with Groundwater Circulation in Bridge Deck Pavement

Two-dimensional analysis of the influence of windbreaks on airflow over a high-speed train under crosswind using lattice Boltzmann method

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