Vehicle-road-bridge coupling dynamics analysis method

Abstract

The invention provides a vehicle-road-bridge coupling dynamics analysis method. The method comprises the steps of building a steel beam model and a linear elastic bridge deck pavement layer model by utilizing finite element software; establishing a multi-rigid-body three-dimensional vehicle body model, a nonlinear tire model and a plate spring suspension model by utilizing multi-rigid-body dynamics software, and assembling to form a multi-rigid-body three-dimensional real vehicle model; compared with the prior art, the multi-rigid-body three-dimensional real vehicle model considers the vehiclesuspension characteristics and the influence of tires on the road surface, and is more consistent with engineering practice, so that a steel bridge vehicle-bridge-road rigid-flexible coupling model is established, and vehicle-bridge-road coupling dynamic analysis is realized; a solid tire model and a viscoelastic bridge deck pavement layer model are established through Abaqus finite element software, a vehicle coupling axial force obtained through vehicle-bridge rigid-flexible coupling dynamic analysis is applied to the solid tire model, and axle rigid-flexible coupling viscoelastic bridge deck pavement dynamic analysis and asphalt pavement damage mechanism analysis are truly achieved.

Description

technical field [0001] The invention belongs to the technical field of vehicle-bridge-road coupling dynamics analysis, and more specifically relates to a vehicle-road-bridge coupling dynamics analysis method. Background technique [0002] With the significant increase in the scale and technical level of the transportation system, the trend of high-speed, heavy-duty and light-duty highway transportation systems is increasing. Due to the high strength, low cost, good mechanical properties and convenient construction of highway steel bridge structures, It is widely used due to its short construction period and easy replacement of components. [0003] The dynamic coupling effect of the steel bridge structure is prominent under the action of heavy-duty vehicles, which leads to fatigue cracks and cracks on the asphalt pavement on the steel bridge structure. On the one hand, when a heavy-duty vehicle traveling at high speed passes the bridge, the vehicle will have a dynamic impact...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a vehicle-road-bridge coupling dynamics analysis method, aiming to solve the problem that the actual effect of tires on the bridge deck cannot be considered in the modeling analysis of the existing steel bridge structure, as well as the physical vehicle and bridge deck pavement. The dynamic coupling between layers and bridges makes it difficult to model uniformly

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