Safe travelling method and system of bad wind environment

A wind environment and safe operation technology, applied in the direction of railway signal and safety, measuring devices, instruments, etc., can solve the problems that cannot meet the transportation efficiency

Inactive Publication Date: 2009-05-27
CENT SOUTH UNIV
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Problems solved by technology

The aforementioned systems cannot meet the requirements of improving transportati...

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  • Safe travelling method and system of bad wind environment
  • Safe travelling method and system of bad wind environment
  • Safe travelling method and system of bad wind environment

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[0053] The safe driving method and system in severe wind environment starts from the study of wind / vehicle / road coupling aerodynamics, and establishes the relationship formula for calculating vehicle overturning stability under the coupling of road conditions (straight lines and curves)-vehicle type and load-wind speed and wind direction-vehicle speed, Put forward the critical operating speed of trains under different road conditions, different models and loads, and different wind speeds, and determine the safe operating speed limits of trains when passing through the jurisdiction of each anemometer station.

[0054] In the environment of high plateau low pressure and strong wind, the coupled flow field of trains, strong winds and specific road conditions (including bridges, embankments, cuttings and plains) is a very complex air flow problem, which belongs to the complex air flow phenomenon of wind-vehicle-road coupling ; three-dimensional viscous incompressible air flow with ...

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Abstract

The invention relates to a safe driving method and system in adverse wind environment. The safe driving method comprises: performing numerical simulation on laws of aerodynamic characteristics for different train types in different road conditions and various environmental wind speeds, wind directions, so as to obtain theoretical relationship of aerodynamic characteristics for different train types in different road conditions and various environmental wind speeds, wind directions; according to overturning stability and the theoretical relationship of aerodynamic characteristics of train on straight track and curve track, and train system dynamics and train aerodynamics, performing numerical simulation and wind tunnel test, establishing train overturning stability calculation relationship under coupling of road conditions-train types, load-wind speed and wind direction-train speed, and obtaining train driving speed threshold of environmental wind speeds and wind directions according to the relationship.

Description

technical field [0001] The invention belongs to the technical field of safe train operation, and in particular relates to a method and system for safe train operation applicable to various harsh wind environments. Background technique [0002] The extremely bad wind environment is very harmful to railway transportation, leading to the paralysis of the railway network, not only causing a large number of passengers to be stranded, goods backlogged, and defense materials unable to arrive in time, directly threatening the national economic construction and national security, and more seriously, causing car crashes and fatalities. Major accident. Therefore, it is necessary to ensure that railway transportation is safe and as smooth as possible under severe wind conditions. [0003] Traffic accidents caused by strong winds occur frequently in countries all over the world. Since the operation of Japanese railways, strong winds have caused 29 rollover accidents, and strong winds h...

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Application Information

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IPC IPC(8): G01M9/00B61L23/00
Inventor 田红旗梁习锋许平杨明智高广军姚松
Owner CENT SOUTH UNIV
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