An analysis method and maintenance method for the longitudinal crack propagation process of a turnout point rail
An analysis method and technology of longitudinal cracks, applied in the direction of design optimization/simulation, special data processing applications, etc., can solve the problems of railway rail damage loss, increase of traffic density, increase of train speed, etc., and achieve the effect of avoiding safety accidents
Active Publication Date: 2021-03-16
BEIJING JIAOTONG UNIV
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Problems solved by technology
However, as the turnout is one of the weak links of the railway, a series of problems have appeared in the operation, such as the increase of the train speed, the increase of the axle load, and the increase of the traffic density, so that the damage and failure of the railway rails are increasing year by year. Frequent replacement of high-speed turnout equipment for line change is one of the main reasons for the service cycle of rails, increased railway operating costs, and reduced passenger safety and comfort
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[0036] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0037] As trains run faster and faster, higher and higher requirements are placed on the stability, safety and maintenance of the track system. Therefore my country's high-speed railway adopts inter-interval seamless lines across the whole line, and up to 5,000 groups of main line high-speed turnouts (comprising multiple large number turnouts such as No. 18 and No. 42) have been laid. However, as the turnout is one of the weak links of the railway, a series of problems have appeared in the operation, such as the increase o...
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The invention discloses a longitudinal crack expansion process analysis method and a maintenance method for a turnout switch rail. By building a wheel-stock rail-straight switch rail three-dimensionalmodel, deep research of a longitudinal crack generation and expansion mechanism of the turnout switch rail is facilitated; scientific and effective prevention suggestions are proposed for influence factors; the crack danger level detected by rail flaw detection is correctly judged out; the existent problems are early discovered and predicted; and necessary maintenance measures are timely adopted,so that safety accidents are avoided.
Description
technical field [0001] The invention relates to the technical field of crack propagation of high-speed railway turnouts. More specifically, it relates to an analysis method and maintenance method for the longitudinal crack propagation process of a switch point rail. Background technique [0002] Famous for its high speed, large capacity, low pollution, safety, reliability, comfort and convenience, high-speed railway is the inevitable choice and core technology of modern railway transportation. With the development of high-speed railway construction, my country has built and operated Wuhan-Guangzhou, Zhengxi, Beijing-Shanghai, Harbin-Dalian, Shiwu, Guangzhou-Shenzhen-Hong Kong, Lanxin, Nanguang, Guiguang and other high-speed railways. , Ning'an, Changkun, Zhengxu and other high-speed railways. As of the end of 2016, my country's high-speed railway operating mileage has reached 22,000 kilometers, accounting for more than 60% of the world's total high-speed railway mileage. It...
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IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 高亮侯博文张献恒曾钦娥刘心成王艺臻张涛邵壮
Owner BEIJING JIAOTONG UNIV