Dynamic similarity-based subway tunnel model test bench and test method thereof

A technology of tunnel model and dynamics, which is applied to the subway tunnel model test bench and its testing field based on similar dynamics, which can solve the problems of high cost and extended experiment period, and achieve the effect of reducing experiment cost and shortening experiment period

Active Publication Date: 2018-11-06
NORTHEASTERN UNIV
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  • Dynamic similarity-based subway tunnel model test bench and test method thereof
  • Dynamic similarity-based subway tunnel model test bench and test method thereof
  • Dynamic similarity-based subway tunnel model test bench and test method thereof

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[0057] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.

[0058] Such as figure 1 As shown, it is an overall subway tunnel piston wind velocity and wind pressure measurement model test bench, and the supporting module 4 is used to support and install the tunnel module 1, the driving module 2 and the measuring module 3.

[0059] Such as figure 2 The shown test bench tunnel module 1 is used to make the simulated train run at a constant speed in the tunnel, and the two tunnel side wall models 104 can be connected by bolts to form a tunnel model of any length, and the two optical axes symmetrically distributed in the tunnel side wall model 101 plays the role of guiding and supporting. The train model 102 is fixed on the slider 103 by screws. Driven by the timing belt 205, the slider 103 moves linearly on the optical axis 101.

[0060] Such as image 3 In the drive module 4 sho...

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Abstract

The invention belongs to the subway tunnel experimental platform technical field and relates to a dynamic similarity-based subway tunnel model test bench and a test method thereof. The system includestunnel modules, driving modules, measuring modules and supporting modules; the plurality of tunnel modules are sequentially connected with one another and fixed on the supporting module; the drivingmodules are fixed on the supporting modules and are located inside the tunnel modules; and the measuring modules are installed on the outer walls of the tunnel modules. With the dynamic similarity-based subway tunnel model test bench and the test method thereof of the invention adopted, the requirements of the wind speed and wind pressure of piston wind on side walls can be satisfied; the speed ofa train at a designated position can be tested; parameter transformation can be carried out according to the changes of specific sites and environments, so that parameters can satisfy a similarity condition; on the basis of a dynamics similarity theory, a dynamic similarity model subway travel system is tested, so that the airflow characteristics and flow law of the prototype subway travel systemcan be predicted, and therefore, experimental costs can be reduced, and an experimental period can be shortened.

Description

technical field [0001] The invention belongs to the technical field of subway tunnel test benches, and relates to a subway tunnel model test bench based on similar dynamics and a testing method thereof. Background technique [0002] With the rapid development of my country's national economy and the acceleration of urbanization, traditional land transportation can no longer meet the growing passenger volume. As a new form of transportation, underground railway trains are characterized by their large passenger capacity, fast punctuality, and The characteristics of low energy consumption and low pollution make it the main force of urban transportation. [0003] When the subway train is running in the tunnel section, due to the restriction of the air flow by the tunnel wall, part of the squeezed air will continue to flow forward along the direction of the train in the form of compression waves, and the other part will pass through the gap between the train and the tunnel. The a...

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Application Information

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IPC IPC(8): G01M9/00
CPCG01M9/00
Inventor 罗忠韩贵鑫张文迪王菲
Owner NORTHEASTERN UNIV
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