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Railway on-bridge train derailment control method and system in extreme environment, terminal equipment and readable storage medium

A technology for extreme environments and trains, applied to railway car body components, railway signals, railway signals and safety, etc., can solve problems such as secondary drops, losses, and increased workload of railway maintenance departments

Active Publication Date: 2021-02-19
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large number of sensors are arranged on the railway line, which has a certain effect on the detection of the train running. However, the sensor is in the open environment for a long time, and the workload of the railway maintenance department is greatly increased.
[0007] (3) CN104228880A proposes a train wheel derailment detection device based on the wheel-rail contact state. Taking the train derailment control on the roadbed as an example, the train derailment control method on the roadbed caused by strong winds, earthquakes, overspeed, and floods is developed. However, whether this technology is suitable for train derailment control on bridges remains to be further developed
However, as the train speed continues to increase, it is required to increase the speed and the high-speed train must issue an alarm and stop in time before the train derails, otherwise serious losses will be caused, especially on bridges, which will easily cause secondary falling accidents

Method used

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  • Railway on-bridge train derailment control method and system in extreme environment, terminal equipment and readable storage medium
  • Railway on-bridge train derailment control method and system in extreme environment, terminal equipment and readable storage medium
  • Railway on-bridge train derailment control method and system in extreme environment, terminal equipment and readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0194] Embodiment 1, taking the cross wind environment as an example

[0195] Practice has shown that train derailment accidents caused by cross winds are still reported at home and abroad. Different from derailment accidents on roadbeds, train derailment accidents on bridges are not only caused by wheels derailing and falling off the track, but also secondary accidents where the vehicle rushes out of the bridge and falls. Accidents, further exacerbating the loss of derailment accidents. For this reason, warning, deceleration or parking must be implemented before the train wheels derail. Strong winds are one of the common meteorological disasters in my country. Many important railway lines are affected by strong winds of magnitude 8 and above all year round. Here, the maximum wind speed within the calibrated wind speed range of grades 8 to 10 is taken as an example. The train speed is 80km / h, and the train marshalling is 1 locomotive pulling 16 empty gondola cars, ballasted t...

Embodiment 2

[0197] Embodiment 2, taking the earthquake environment as an example

[0198] Earthquakes are ground movements caused by the collision of tectonic plates. The seismic load is transmitted from the bottom of the pier to the body of the pier through ground motion, and then to the superstructure, track and train through the support; and the interaction between the train and the track is transmitted from the superstructure to the bottom of the pier; thus, the seismic action is as follows: Spatial vibration of a car-track-bridge system. Here, the seismic wave displacement is input from the bottom of the pier to form the equivalent seismic load K applied to the bottom of the pier u . The seismic conditions are: the seismic wave selects El Centro acceleration wave, and the peak value of the seismic acceleration is 6m / s 2 , the train speed is 80km / h, the train marshalling is 1 locomotive pulling 16 empty gondola cars, ballasted track, prestressed concrete T-beam bridge with a span o...

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Abstract

The invention discloses a railway on-bridge train derailment control method and system in an extreme environment, terminal equipment and a readable storage medium. The method comprises the steps of: simulating railway on-bridge train derailment working conditions in extreme environments such as strong wind and earthquakes; respectively establishing spatial vibration matrix equations of the railwaytrain-track-bridge system in crosswind and earthquake environments; analyzing the whole derailment process of the train on the bridge to obtain key data of the wheel suspension amount and the transverse relative displacement of a bogie and a steel rail, and dividing the key data by the safety coefficient sigma to obtain an alarm threshold for judging the train derailment in advance on the basis of the transverse relative displacement Ytt of the bogie and the steel rail at the moment of wheel derailment; therefore, monitoring whether the actual transverse relative position Y'tt of the bogie and the steel rail is greater than or equal to Ytt / sigma or not in real time, and if yes, determining that the train has the derailment risk, and conducting safety control on the train.

Description

technical field [0001] The invention belongs to the technical field of train safety control, and in particular relates to a method, system, terminal equipment and readable storage medium for controlling train derailment on a railway bridge under an extreme environment. Background technique [0002] With the further formation of my country's heavy-haul railway network, large-scale heavy-haul railways have been built and operated, and the safety of trains during the service of heavy-haul railways has attracted widespread attention from scholars at home and abroad, especially the safety of trains on bridges. In fact, the railway is a "ribbon" structure. Due to its long operating mileage, it is vulnerable to extreme environments such as strong winds and earthquakes during driving. The bridge was derailed due to an earthquake. In 2006, an 800-meter-long cargo train in Griggs County, the United States derailed on the Luverne Bridge due to strong winds. In 2007, when a cargo train i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61C17/00B61L15/00B60T7/12
CPCB61C17/00B61L15/0054B60T7/124
Inventor 龚凯刘林芽张鹏飞贺小星
Owner EAST CHINA JIAOTONG UNIVERSITY
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