Method and device for constructing dynamic mapping relation between bridge additional deformation and traffic safety
A technology of additional deformation and driving safety, which is applied in the field of traffic safety and can solve problems such as high calculation costs
Active Publication Date: 2020-01-24
SOUTHWEST JIAOTONG UNIV
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[0003] The purpose of the present invention is to provide a method and device for constructing the dynamic mapping relationship between bridge additional deformation and driving safety, which alleviates the need for repeated calculations and security analysis for different bridge additional deformation modes and different deformation amounts in the prior art, resulting in high calculation costs. technical problem
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[0050] 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.
[0051]At present, such methods need to go through a large number of vehicle-bridge model calculations for different bridge additional deformation modes to obtain the threshold value of the bridge additional deformation model, so as to analyze the impact on driving safety, resulting in high calculation costs. Based on this, the method and device for constructing the dynamic mapping relationship between bridge additional deformation and driving safety provided by the present invention can first obtain the vehicle response v...
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The invention provides a method and device for constructing a dynamic mapping relation between bridge additional deformation and traffic safety, and relates to the technical field of traffic safety. The method comprises the following steps: acquiring a vehicle response variable quantity caused by bridge additional deformation; obtaining a quantitative relation between the bridge additional deformation and the vehicle response variation according to the vehicle response variation caused by the bridge additional deformation; obtaining a quantitative relation between the driving safety evaluationindex and the vehicle response variation; and combining the quantitative relation between the bridge additional deformation and the vehicle response variation with the quantitative relation between the driving safety evaluation index and the vehicle response variation to obtain a quantitative mapping relation between the bridge additional deformation and the driving safety. The technical problemthat in the prior art, due to the fact that different bridge additional deformation modes and different deformation amounts need repeated calculation and analysis safety, the calculation cost is largeis solved.
Description
technical field [0001] The invention relates to the technical field of traffic safety, in particular to a method and a device for constructing a dynamic mapping relationship between additional deformation of a bridge and driving safety. Background technique [0002] In the existing research on the impact of additional bridge deformation on driving safety, the additional deformation of the track caused by the additional deformation of the bridge is usually calculated first, and then used as the system excitation of the vehicle-bridge or vehicle-track-bridge coupling model to calculate the vehicle dynamic response, thereby analyzing the bridge. Effect of additional deformation on driving performance. However, the existing methods of this type obtain the additional deformation threshold of the bridge by trying multiple bridge additional deformation values and calculating the vehicle-bridge model one at a time. It can be understood that the existing method is to obtain the bri...
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IPC IPC(8): G06F30/20G06F30/13
Inventor 勾红叶蒲黔辉周文王君明洪彧赵虎
Owner SOUTHWEST JIAOTONG UNIV