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Test simulation system for rail structures of high-speed railways and urban railway system

A technology of urban rail transit and high-speed railway, applied in the field of railway engineering structure test simulation system

Active Publication Date: 2010-06-02
北京协同创新轨道交通研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no such test simulation system at home and abroad. The present invention fills this gap, can be applied to engineering tests and scientific research, and can provide an economical, fast and vivid simulation test and demonstration platform for related teaching

Method used

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  • Test simulation system for rail structures of high-speed railways and urban railway system
  • Test simulation system for rail structures of high-speed railways and urban railway system
  • Test simulation system for rail structures of high-speed railways and urban railway system

Examples

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Effect test

Embodiment 1

[0041] In this example, the basic theories of heat transfer and finite element method are used to simulate the mechanical properties of the slab track structure under the action of temperature by using ANSYS software, analyze the data obtained from the simulation test, and use FLASH software to perform animation simulation Finally, an independent simulation system is formed through VB.NET language, which provides a platform and basis for track engineering teaching and ballastless track design.

[0042]The temperature and force test of the track slab only studies the deformation and stress of the track slab under the action of temperature load, so the effect of the rail is ignored in the modeling, and a simplified model of the track slab and concrete layer is established. The CA mortar layer between the two A three-way spring is used to simulate. The model selects a track slab for calculation, such as figure 2 shown. The track slab is selected from Japan’s Shinkansen A-type ...

Embodiment 2

[0057] This embodiment simulates the field test, adopts the finite element method, uses ANSYS software to simulate the mechanical characteristics of the slab track structure under the action of longitudinal force, analyzes the data obtained from the test, and uses FLASH software to perform animation simulation, and finally through VB The .NET language forms an independent simulation system, providing a platform and basis for track engineering teaching and ballastless track design.

[0058] The track slab push plate test simulated in this embodiment is to study the displacement of the track slab under the action of longitudinal concentrated force, obtain the relationship between force and displacement, and then obtain the frictional resistance therebetween. In this test, the track slab and concrete The simplified model of the layer, the CA mortar layer between the two is simulated by a three-way spring. Take a board as the research object, such as Figure 7 shown. The track s...

Embodiment 3

[0062] This embodiment simulates the falling shaft test. On the selected track section, the wheel set is used to freely fall at a certain height to cause a vertical impact on the rail surface. On the one hand, the vertical impact force signal of the rail is measured, and the track is calculated. The elastic coefficient K and damping coefficient C; on the other hand, through the attenuation of the impact force amplitude of the rail and the vibration acceleration of each part of the track, the vibration transmission and attenuation performance of the track structure is analyzed. The test and calculation of the elastic coefficient and damping coefficient of the track refer to the mature test method of the Japan Railway Technology Research Institute, and the track and the load system are considered as a single degree of freedom in the calculation.

[0063] This embodiment adopts the finite element method, uses ANSYS software to simulate the actual impact between the wheel and the r...

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Abstract

The invention discloses a test simulation system for rail structures of high-speed railways and a urban railway system. The system is based on a finite element theory to establish models of rail structures and various components, and highly simulates indoor test and field test conditions; and the system simulates conditions of key components of a rail and whole rail structures such as stress and deformation under various loading conditions by replacing and combining different types of components, and arranges and analyzes obtained simulation test data to generate vivid animation for demonstration. The system solves the problems existing in actual tests that test equipment and test components have high manufacturing cost, the test process is relatively complicated and tedious and is susceptible to external environment, huge test expense and human capital investment are needed and the like by constructing a friendly human-computer interaction platform to simulate indoor tests and field tests of the rail structures and the components. The simulation system can provide an economical, quick and vivid simulation test and demonstration platform for related scientific research and teaching of the high-speed railways and the urban railway system.

Description

technical field [0001] The invention relates to a high-speed railway and urban rail transit track structure test simulation system, which belongs to the field of railway engineering structure test simulation systems. Background technique [0002] With the overall speed-up of my country's main road network and the development of high-speed railways, passenger dedicated lines, heavy-duty transportation and urban rail transit, the track structure, as an important infrastructure for railway or subway traffic, faces many challenges such as high (fast) speed and heavy load. technical challenge. In order to ensure the high ride comfort and high comfort of high-speed railways and passenger dedicated lines, prolong the service life of heavy-duty railway track structural components, and realize the vibration and noise reduction of urban rail transit, my country's rail transit has actively introduced and independently innovated track structures and components , solved some key technical...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 高亮肖宏蔡小培尹辉曲村胡华锋张晓娟杨文茂张世栋汤超李崇王玥桥
Owner 北京协同创新轨道交通研究院有限公司
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