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Method and device for calculating track irregularity at bridge pier settlement and electronic apparatus

A track irregularity and track technology, which is applied in the directions of calculation, electrical digital data processing, design optimization/simulation, etc., can solve the problems such as deviation of the calculation results of the coupled vibration of the axle, and the inability to simulate the track completely.

Inactive Publication Date: 2019-01-11
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at the settlement position of the bridge pier, the above two track irregularity spectra cannot fully simulate the deformation of the track, which will lead to a large deviation in the final vehicle-bridge coupling vibration calculation results

Method used

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  • Method and device for calculating track irregularity at bridge pier settlement and electronic apparatus
  • Method and device for calculating track irregularity at bridge pier settlement and electronic apparatus
  • Method and device for calculating track irregularity at bridge pier settlement and electronic apparatus

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Embodiment 1

[0036] An embodiment of the present invention provides a method for calculating track irregularity at a bridge pier settlement.

[0037] figure 1 It is a schematic flow chart of a method for calculating track irregularities at bridge pier settlements according to the present invention, comprising the following steps:

[0038] Step S101, obtaining the vertical deformation of the bridge at the settlement of the pier.

[0039] The intermediate support structure of a multi-span bridge is called a pier, and the pier is connected to the bridge to provide support, and the bridge will also undergo vertical deformation when the pier settles. The above-mentioned vertical deformation refers to the deformation in the direction perpendicular to the earth's surface. When the bridge pier settles, the bridge will deform vertically downward. The settlement of the bridge pier is the vertical deformation of the bridge. The settlement of the bridge pier can be obtained by direct measurement, an...

Embodiment 2

[0129] The embodiment of the present invention simulates and compares the irregularity of the track at the bridge pier settlement provided in the above embodiment with the existing German low-interference track irregularity, and uses the mathematical software MATLAB to program to realize the programmatic solution of the analytical model.

[0130] C1: When the pier settlement is 10mm, bring its value into the analytical expression of the pier settlement deformation mapping to the rail surface, the corresponding rail surface deformation can be calculated, and obtained by drawing software Figure 7 Mileage-magnitude diagram of rail deformation caused by pier settlement of 10 mm.

[0131]C2: The existing German low-interference orbit is not smooth, based on the power spectral density of the German low-interference orbit, using the trigonometric series method to generate Figure 8 A sample of German track irregularities.

[0132] C3: The track at the settlement of the designed pie...

Embodiment 3

[0135] Corresponding to the method for calculating track irregularities at bridge pier settlements provided in Embodiment 1, an embodiment of the present invention provides a device for calculating track irregularities at bridge pier settlements, see Figure 10 The structural block diagram of a device for calculating track irregularity at the settlement of bridge piers is shown, including:

[0136] The vertical deformation acquisition module 1001 is used to obtain the vertical deformation of the bridge at the settlement of the pier;

[0137] The track deformation calculation module 1002 is used to input the vertical deformation into the mapping analysis model between the vertical deformation of the bridge and the track deformation, and calculate the vertical deformation of the track caused by the settlement of the bridge pier. The mapping analysis model is a model that reflects the corresponding relationship between the vertical deformation of the bridge and the vertical defor...

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Abstract

The invention provides a method and device for calculating track irregularity at a bridge pier settlement and an electronic apparatus, which relate to the technical field of high-speed railways. The method comprises the following steps: obtaining the vertical deformation of a bridge at the settlement of a bridge pier; inputting the vertical deformation into the mapping analytical model of bridge vertical deformation and track deformation, and calculating the track deformation caused by pier settlement. The mapping analytical model is a model reflecting the corresponding relationship between vertical deformation and track deformation of the bridge. The track irregularity power spectral density function is determined and the track irregularity graph is generated by fitting the track irregularity power spectral density function with numerical analysis method. According to the track deformation and track irregularity diagram, the track irregularity diagram at the pier settlement is obtained. The method and device for calculating the track irregularity at the bridge pier settlement provided by the embodiment and the electronic apparatus can accurately obtain the track irregularity at abridge pier settlement.

Description

technical field [0001] The invention relates to the technical field of high-speed railways, in particular to a method, device and electronic equipment for calculating track irregularities at bridge pier settlements. Background technique [0002] During the operation of high-speed railway lines, due to the long-term repeated action of the wheels, the rail surface will be worn unevenly, causing track deformation and forming track irregularities. High-speed railway bridges account for a large proportion of high-speed railway operating mileage, and some high-speed railway lines will inevitably be under special geological conditions. Under the long-term action of the train, the soft soil foundation will produce a large additional settlement, so the high-speed railway bridge structure located in these soft soil geological areas is likely to experience different degrees of pier settlement during operation. The settlement of the bridge pier will cause additional deformation of the ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 勾红叶杨龙城王君明蒲黔辉
Owner SOUTHWEST JIAOTONG UNIV
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