Joint-simulation-based on-bridge ballastless turnout structure system and dynamic analysis method thereof

Abstract

The invention relates to a joint-simulation-based on-bridge ballastless turnout structure system and a dynamic analysis method thereof. The dynamic analysis method of the joint-simulation-based on-bridge ballastless turnout structure system comprises the following steps of firstly finishing the model establishment of a balastless track and bridge structure by utilizing the ABAQUS software; secondly finishing the model establishment of a vehicle and a turnout by utilizing the SIMPACK software; finally establishing rigid-flexible coupled wheel-track contact relationship in the SIMPACK software to form a vehicle-turnout-bridge coupling system model, and realizing the connection and the coupled solution of a vehicle model, a turnout model and a bridge model. According to the joint-simulation-based on-bridge ballastless turnout structure system and the dynamic analysis method thereof, which are disclosed by the invention, the complex wheel-track contact relationship of a turnout zone is fully considered, and the model establishment of a turnout and bridge structure is finished according to the actual state to the greatest extent so as to ensure the detailedness, the completion and the accuracy of the model; the model establishment is finished by utilizing the business software, so that the production, the design and the application are convenient, and the improvement is remarkable by comparing the modeling method provided by the invention with the traditional modeling method.

Description

technical field [0001] The invention relates to a dynamic analysis method of a ballastless track seamless turnout structure system on a bridge based on a joint simulation vehicle-turnout-bridge space coupling model, and belongs to the technical field of railway engineering application calculation and design. Background technique [0002] Turnout is an essential line equipment when a train transfers from one track to or crosses another track. It is an important part of the railway track structure. High-speed turnouts are an important factor that limits the speed of trains in high-speed railways. Its structure and The state has a direct impact on the safety and stability of train operation and the comfort of passengers. [0003] High-speed railways have high requirements for track smoothness, so there are a large number of lines on bridges for high-speed railway construction. The large proportion of bridges, viaducts and long bridges have become the main features of my countr...

AI Technical Summary

Problems solved by technology

The finite element method can establish a relatively fine structural model, but it is not easy to establish a wheel-rail contact relationship model, while the multi-body dynamics method can carry out detailed modeling for the vehicle system and wheel-rail contact relationship, but it cannot accurately reflect the track and bridge structure

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