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A method for obtaining train wheel-rail force load

An acquisition method and wheel-rail force technology, applied in the field of physics, can solve the problem of low precision, achieve the effect of strong operability, reduce the limitation of test conditions, and improve the calculation accuracy

Active Publication Date: 2020-06-30
BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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Problems solved by technology

[0008] An embodiment of the present invention provides a method for obtaining train wheel-rail force load, which is used to solve the problem of low accuracy of the calculation method of train wheel-rail force load in the prior art

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  • A method for obtaining train wheel-rail force load
  • A method for obtaining train wheel-rail force load
  • A method for obtaining train wheel-rail force load

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Embodiment Construction

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] figure 1 It is a flow chart of a method for acquiring train wheel-rail force load in an embodiment of the present invention, as figure 1 As shown, the method includes:

[0020] S1, according to the vibration acceleration time history test data of the field soil test point, obtain the vibration acceleration spectrum test data of the train,...

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Abstract

An embodiment of the invention provides a method for obtaining a wheel-rail force load of a train. The method comprises: obtaining vibration acceleration spectrum test data of the train according to vibration acceleration time history test data of a site soil test point; obtaining a amplitude parameter of a sinusoidal force of each frequency in a reference wheel-rail force load model and an initial wheel-rail force load of the train according to the vibration acceleration spectrum test data and the reference wheel-rail force load model; obtaining vibration acceleration level prediction data ofthe test point according to an initial prediction wheel-rail force load of the train and a site soil finite element model of an steel rail bed tunnel; and using the obtained prediction wheel-rail force load of the train as a final wheel-rail force load until the obtained vibration acceleration level prediction data and the vibration acceleration spectrum prediction data satisfy a preset condition. The method for obtaining the wheel-rail force load of the train does not need to enter a subway tunnel to carry out a vibration source intensity test work, so that the test condition limitation is greatly reduced, the operability is high, and the calculation precision is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of physics, and in particular to a method for acquiring train wheel-rail force loads. Background technique [0002] In recent years, the rapid development of the subway has brought serious vibration and noise pollution problems. When building new vibration-sensitive buildings around the subway line, it is necessary to use the finite element numerical simulation method to first predict and evaluate the subway vibration impact, and establish a subway train load model that meets the actual situation. And the input method is the key factor affecting the prediction accuracy of numerical simulation. The intensity spectrum characteristics and intensity of the subway vibration source are affected by various factors such as vehicle type, operating state, line conditions, and track vibration reduction measures. [0003] The intensity of the vibration source is very discrete. Scholars at home ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G19/08
CPCG01G19/08
Inventor 邬玉斌宋瑞祥刘必灯何蕾吴丹吴雅南
Owner BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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