Vehicle-bridge-storm flow coupling vibration analysis method for road-railway bridge

Abstract

The invention discloses a vehicle-bridge-storm flow coupling vibration analysis method for a road-railway bridge. According to the method, a vehicle subsystem, a bridge subsystem and a storm flow coupling field subsystem serve as a unified system by adopting a large system thought. According to static and dynamic interaction among the subsystems and a displacement coordination relationship betweenthe vehicle subsystem and the bridge subsystem, a vehicle-bridge-storm flow coupling vibration equation of the road-railway bridge is established; and by adopting a separated iterative method, dynamic responses of the vehicle subsystem and the bridge subsystem are solved, thereby evaluating running safety and comfort of vehicles and trains passing the road-railway bridge under the action of a storm flow coupling field. The dynamic effects of the vehicles and the trains can be considered at the same time; the static and dynamic effects and the aeroelastic and hydroelastic feedback effects of the storm flow coupling field on the vehicle subsystem and the bridge subsystem can be considered at the same time; and an effective method is provided for driving safety evaluation of the cross-sea road-railway bridge.

Description

technical field

[0001] The invention relates to the technical field of disaster prevention and reduction in bridge engineering, in particular to a vehicle-bridge-wind-wave-flow coupling vibration analysis method for road-rail dual-purpose bridges. Background technique

[0002] Since the 21st century, the bridges of the world have entered a new era of building cross-sea and island projects. my country has successively built sea-crossing bridges such as the East China Sea Bridge, the Hangzhou Bay Bridge, and the Qingdao Bay Bridge. At present, the Hong Kong-Zhuhai-Macau Bridge is about to be completed and opened to traffic. The Dalian Bay Bridge, the Six-Span Sea-Crossing Bridge, and the Shenzhen-Central Channel Project have started construction. The giant cross-sea channel project across the Qiongzhou Strait and the Bohai Strait is under planning and research. Internationally, countries around the world are also speeding up the planning and research of large-scale cross-sea ...

Examples

Embodiment Construction

[0085] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0086] refer to figure 1 , figure 2 with image 3 , the present invention provides a vehicle-bridge-wind-wave-flow coupled vibration analysis method for road-rail dual-purpose bridges. The method adopts the idea of ​​a large system, and uses the vehicle subsystem 1, the bridge subsystem 2 and the wind-wave-flow coupling field subsystem 3 as a unified system. This method first establishes the vehicle-bridge-wind-wave-flow coupling vibration equation of the road-rail dual-purpose bridge according to the static force and dynamic interaction and displacement coordination relationship among the vehicle subsystem 1, the bridge subsystem 2, and the wind-wave-flow coupling field subsystem 3; Then solve the vehicle-bridge-wind...

technical field

[0001] The invention relates to the technical field of disaster prevention and reduction in bridge engineering, in particular to a vehicle-bridge-wind-wave-flow coupling vibration analysis method for road-rail dual-purpose bridges. Background technique

[0002] Since the 21st century, the bridges of the world have entered a new era of building cross-sea and island projects. my country has successively built sea-crossing bridges such as the East China Sea Bridge, the Hangzhou Bay Bridge, and the Qingdao Bay Bridge. At present, the Hong Kong-Zhuhai-Macau Bridge is about to be completed and opened to traffic. The Dalian Bay Bridge, the Six-Span Sea-Crossing Bridge, and the Shenzhen-Central Channel Project have started construction. The giant cross-sea channel project across the Qiongzhou Strait and the Bohai Strait is under planning and research. Internationally, countries around the world are also speeding up the planning and research of large-scale cross-sea ...

Examples

Embodiment Construction

[0085] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0086] refer to figure 1 , figure 2 with image 3 , the present invention provides a vehicle-bridge-wind-wave-flow coupled vibration analysis method for road-rail dual-purpose bridges. The method adopts the idea of ​​a large system, and uses the vehicle subsystem 1, the bridge subsystem 2 and the wind-wave-flow coupling field subsystem 3 as a unified system. This method first establishes the vehicle-bridge-wind-wave-flow coupling vibration equation of the road-rail dual-purpose bridge according to the static force and dynamic interaction and displacement coordination relationship among the vehicle subsystem 1, the bridge subsystem 2, and the wind-wave-flow coupling field subsystem 3; Then solve the vehicle-bridge-wind...

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