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Traffic safety formulating method and device based on vehicle-rail-bridge coupling vibration model

A technology of coupling vibration and driving safety, applied in the field of traffic safety, can solve the problem of high computational cost

Inactive Publication Date: 2020-01-14
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, to analyze different bridge deformation modes, different finite element models need to be established, resulting in high computational cost

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  • Traffic safety formulating method and device based on vehicle-rail-bridge coupling vibration model
  • Traffic safety formulating method and device based on vehicle-rail-bridge coupling vibration model
  • Traffic safety formulating method and device based on vehicle-rail-bridge coupling vibration model

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Embodiment Construction

[0055] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056]At present, the finite element model is used to calculate the additional deformation array of the rail caused by the additional deformation of the bridge, so as to analyze the driving safety. However, a bridge finite element model cannot accurately simulate different bridge additional deformation modes, resulting in high calculation costs. Based on this , the driving safety formulation method and device based on the vehicle-rail-bridge coupling vibration model provided by the present invention can input the addition...

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Abstract

The invention provides a traffic safety making method and device based on a vehicle-rail-bridge coupled vibration model, and relates to the technical field of traffic safety, and the method comprisesthe steps: inputting various types of bridge additional deformation values into a bridge-steel rail deformation mapping model, and obtaining a plurality of steel rail additional deformation arrays; inputting the multiple types of steel rail additional deformation arrays into the vehicle-rail-bridge coupling vibration model one by one to obtain multiple steel rail additional deformation thresholds;and determining a train safety evaluation criterion according to the plurality of steel rail additional deformation thresholds. The technical problem that in the prior art, the calculation cost is high due to the fact that a steel rail additional deformation array caused by one type of bridge additional deformation is calculated through one type of finite element model is solved.

Description

technical field [0001] The invention relates to the technical field of traffic safety, in particular to a method and device for formulating driving safety based on a vehicle-rail-bridge coupled vibration model. Background technique [0002] As the area covered by high-speed rail gradually expands, high-speed railway bridges may be affected by special regions, complex environments, and various loads, which will inevitably lead to bridge pier settlement, beam end corners, beam body staggering, and creep arching. Additional deformation mode, this kind of deformation exists for a long time and continues to develop in time-space transformation, and it is bound to be transmitted to the rail surface through the track structure layer by layer to affect track ride comfort and driving safety. [0003] At present, the additional deformation array of the rail caused by the additional deformation of the bridge is calculated by establishing a finite element model, and input into the coupl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23
Inventor 勾红叶蒲黔辉周文王君明洪彧赵虎
Owner SOUTHWEST JIAOTONG UNIV