A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WINDPROOF DESIGN METHOD FOR TRAFFIC SAFETY OF LARGE-SPAN RAILWAY BRIDGE AND WIND REDUCTION DEVICE
A windproof design method for traffic safety of a large-span railway bridge and a wind reduction device, relating to the technical field of bridge engineering. The present method comprises: obtaining a power index α of a wind profile index formula according to wind observation data provided by a weather station near a bridge site area of a bridge; using the wind profile index formula to convert Uweather into Ubridge deck; establishing a wind-train-bridge coupling system to obtain, on the basis of the fact that γbridge deck is not less than γweather and regulations for segmented speed limits of trains on both land sides under the condition of Uweather, regulations for the segmented speed limits of trains under the condition of Ubridge deck; performing wind-train-bridge coupling analysis to obtain actual response results of the bridge and a train under the condition of limit train speed and multiple Ubridge decks; performing comparison analysis on the actual response results with a dynamic response evaluation standard to select a Ubridge deck, and determining, in combination with the regulations for the segmented speed limits of trains under the condition of Ubridge deck, the wind speed reduction coefficient of wind barriers, so as to design a wind reduction device. According to the present method, precise design of wind barriers for wind prevention and wind reduction is performed by combining the characteristics of the wind environment at the bridge site with the effect of coupling of the bridge with the train and the wind.
WINDPROOF DESIGN METHOD FOR TRAFFIC SAFETY OF LARGE-SPAN RAILWAY BRIDGE AND WIND REDUCTION DEVICE
A windproof design method for traffic safety of a large-span railway bridge and a wind reduction device, relating to the technical field of bridge engineering. The present method comprises: obtaining a power index α of a wind profile index formula according to wind observation data provided by a weather station near a bridge site area of a bridge; using the wind profile index formula to convert Uweather into Ubridge deck; establishing a wind-train-bridge coupling system to obtain, on the basis of the fact that γbridge deck is not less than γweather and regulations for segmented speed limits of trains on both land sides under the condition of Uweather, regulations for the segmented speed limits of trains under the condition of Ubridge deck; performing wind-train-bridge coupling analysis to obtain actual response results of the bridge and a train under the condition of limit train speed and multiple Ubridge decks; performing comparison analysis on the actual response results with a dynamic response evaluation standard to select a Ubridge deck, and determining, in combination with the regulations for the segmented speed limits of trains under the condition of Ubridge deck, the wind speed reduction coefficient of wind barriers, so as to design a wind reduction device. According to the present method, precise design of wind barriers for wind prevention and wind reduction is performed by combining the characteristics of the wind environment at the bridge site with the effect of coupling of the bridge with the train and the wind.
WINDPROOF DESIGN METHOD FOR TRAFFIC SAFETY OF LARGE-SPAN RAILWAY BRIDGE AND WIND REDUCTION DEVICE
WINDDICHTES ENTWURFSVERFAHREN FÜR DIE VERKEHRSSICHERHEIT EINER EISENBAHNBRÜCKE MIT GROSSER SPANNWEITE UND WINDREDUKTIONSVORRICHTUNG
PROCÉDÉ DE CONCEPTION RÉSISTANTE AU VENT DESTINÉ À LA SÉCURITÉ DE LA CIRCULATION D'UN PONT FERROVIAIRE À GRANDE ENVERGURE ET DISPOSITIF DE RÉDUCTION DU VENT
MIAO RUNCHI (author) / GAO ZONGYU (author) / LI LONGAN (author) / XU LEIPING (author) / DUAN XUEWEI (author) / KANG JIN (author) / QU AIPING (author) / HE YOUDI (author)
2024-02-14
Patent
Electronic Resource
English
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