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High-speed railway line design and evaluation method based on train-track system dynamics

A system dynamics, high-speed railway technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as unevenness, and achieve the effect of increasing recognition

Inactive Publication Date: 2015-05-20
CHINA RAILWAY DESIGN GRP CO LTD
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Problems solved by technology

However, the dynamic response of the system caused by the alignment of the line is very different from that caused by the offline structure. First, the vibration generated is mainly in the low frequency range. Under high-speed driving conditions, the vibration generated by adjacent alignments is similar to that of long-wave irregularities. The second is the analysis of vibration. From the consideration of pure amplitude, it is difficult to distinguish the influence of linearity.

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  • High-speed railway line design and evaluation method based on train-track system dynamics
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  • High-speed railway line design and evaluation method based on train-track system dynamics

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0022] Such as Figure 1 to Figure 3 As shown, a high-speed railway structure based on line alignment dynamics design includes line alignment, track and its supporting structure. The line alignment of the high-speed railway structure is formed by the space structure of the track and its supporting structure, including plane straight line, circular Curves and transitional curves, longitudinal section slope sections and vertical curves, etc., are characterized in that the line alignment scheme is designed by the following method:

[0023] a. Based on the vehicle-line dynamic interaction theory, establish a system dynamic analysis model. The model is divided into two subsystems, the vehicle and the offline structure, and the dynamic relationship between the wheel and the rail is used as the link between the two. (1) The vehicle model considers th...

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Abstract

The invention discloses a high-speed railway line design and evaluation method based on train-track system dynamics. Body vibration response caused by high-speed railway line types is mainly concentrated within the range of low frequency below 1Hz, in order to effectively distinguish body vibration caused by the line types, line smoothness, offline structure rigidity and the like, indexes such as motion sickness, comfort, transition curve comfort and instantaneous comfort in standards such as ISO2631 and EN12299 are introduced by a system dynamic simulation method, reasonableness of line type parameters and line schemes is comprehensively analyzed and evaluated according to acceleration frequency distribution and cumulative frequency distribution, and basis is provided for determining the line type parameters and optimizing the line schemes. The method can overcome the shortcomings of a traditional line analysis method, running safety and riding comfort are forecasted, analyzed and evaluated under the condition of optional plane and profile section line type combination, a scientific analysis method is provided for high-speed railway line design, and the method has an important theoretical significance and engineering application values.

Description

technical field [0001] The invention relates to the technical field of railway engineering; in particular, it relates to a high-speed railway line design and evaluation method based on train line system dynamics. Background technique [0002] The operating speed of high-speed railways has been greatly increased, and the dynamic interaction between trains and lines has been significantly enhanced. Operation practice shows that the vibration attenuation period of high-speed trains is long, and the superposition of vibrations has a significant impact on comfort. Low-frequency vibrations caused by line shape changes under high-smooth conditions have become one of the main factors affecting passenger ride comfort. The reasonable selection of alignment parameters of high-speed railway lines and the evaluation and optimization of alignment have become important issues to be solved urgently. [0003] For a long time, the determination of railway line design parameters in my country...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 龙许友孙海富齐春雨袁伟缪铭铭
Owner CHINA RAILWAY DESIGN GRP CO LTD
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