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Fine tamping adjustment amount optimization method based on medium and long wave smoothness

An optimization method and an adjustment technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as lack, unevenness of medium and long waves, and unsatisfactory recovery of linear geometric parameters, etc., to improve track Smoothness, eliminate the roughness of medium and long waves, and improve the effect of subjective feeling

Active Publication Date: 2021-04-30
BEIJING JIAOTONG UNIV +3
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AI Technical Summary

Problems solved by technology

Due to the lack of accurate tamping data support, the traditional ballasted railway line maintenance and repair measures only adjust and restore the relative status of the track geometry, and the control of medium and long wave irregularities and the restoration of linear geometric parameters cannot achieve ideal results

Method used

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  • Fine tamping adjustment amount optimization method based on medium and long wave smoothness
  • Fine tamping adjustment amount optimization method based on medium and long wave smoothness
  • Fine tamping adjustment amount optimization method based on medium and long wave smoothness

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Embodiment Construction

[0048] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0049] Such as figure 1 , Figure 4 As shown, a fine-tamping adjustment optimization method based on the smoothness of medium and long waves, the specific implementation of the method is as follows:

[0050] 1) Grasp the actual position of the line to be adjusted, determine the smoothness control standard for medium and long waves, and provide a basis for formulating a fine-tuning plan. Track precision measurement adopts the "absolute + relative" method, relying on the fast track measurement trolley to accurately collect the internal and external track geometry, generate position data based on the railway track construction coordinate system, and compare the actual position of the line to be adjusted with the original The design position is compared to obtain the centerline deviation between the actual position of the line to be adjusted and the original d...

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Abstract

The invention discloses a fine tamping adjustment amount optimization method based on medium and long wave smoothness. Along with acceleration of high-speed railway operation and ordinary-speed railways, the influence of medium-long wave irregularity of a track on traveling performance becomes more and more remarkable, accurate maintenance of a large-scale road maintenance machine serves as a main measure for improving the state of a ballast line, the control effect on medium-long wave irregularity is still insufficient, and in order to effectively improve the state of the line, a medium-long wave smoothness-based track fine tamping adjustment amount calculation model is established on the basis of a medium-long wave smoothness control standard and track fine measurement data, an optimal tamping scheme is obtained by solving according to a nonlinear programming theory in combination with an optimization thought of grouping solving of basic optimization units, and the vehicle track coupling kinetic model is used for evaluating the operation scheme, so that the control and constraint on the medium-long wave irregularity of the track are realized. According to the method, the defects of a traditional tamping method can be overcome, especially in the aspect of eliminating medium-long wave irregularity, and therefore the ballast track line quality is effectively improved.

Description

technical field [0001] The invention relates to the technical field of railway engineering and optimization processing, in particular to an optimization method of fine tamping adjustment based on smoothness of medium and long waves. Background technique [0002] Ensuring good track smoothness is the basis and key to the safe operation of ballasted railways, and the comprehensive operation quality of fine compaction plays a vital role in improving track smoothness. [0003] In recent years, large-scale road maintenance machinery has been widely used to improve the state of ballasted railway lines through precise maintenance. The operation effect is affected by factors such as ballast density, lifting ratio, hard bending of rails, etc., and it is difficult to achieve the expected effect, especially for medium and long wave irregularities. The control effect is still not sufficient, and it is often necessary to increase the number of operations to achieve the expected value. Ho...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/13G06F119/14
CPCG06F30/13G06F30/20G06F2119/14
Inventor 时瑾张雨潇陈云峰盛世勇楼梁伟王晓凯蔡德钩王英杰王鹏李再帏
Owner BEIJING JIAOTONG UNIV
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