Dynamic characteristic test platform of structure of full-scale rail of high-speed railway
A technology of high-speed railways and dynamic characteristics, applied in the direction of tracks, track maintenance, roads, etc., can solve the problems that cannot be used to study the durability of the track-subgrade system, cannot test and study the dynamic characteristics of the track structure, and the track test bench does not have a subgrade foundation, etc. problems, to achieve accurate and reliable test results, eliminate boundary effects, and use a wide range of effects
Inactive Publication Date: 2012-02-08
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
This kind of test can only be tested for specific track structure components (such as rails or fasteners) or a single type of track structure (such as slab ballastless track), and cannot test and study the dynamic characteristics of the complete track structure.
In addition, the track structure of this type of test bed is short, which cannot eliminate the boundary effect well, and the track test bed does not have a subgrade foundation, so the experimental structure cannot truly reflect the actual situation, and cannot be used to study the durability of the track-subgrade system. sex
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[0029] Figure 1~4 Shown, a kind of specific embodiment of the present invention is: a kind of dynamic characteristic test bench of high-speed railway full-scale track structure, comprises loading reaction force frame 1, track 6, wherein the column 1a of loading reaction force frame 1 is arranged on track 6 Two vertical loading beams 3 are longitudinally arranged on the two sides of the two sides of the loading reaction force frame 1 on the beam 1b, and the two vertical loading beams 3 are respectively located directly above the left rail 13 and the right rail 14 of the track 6, and the two vertical loading beams 3 The lower part of the loading beam 3 is connected with front and rear vertical loading actuators 4 which can move longitudinally. The inner side surfaces of the two columns 1a of the loading reaction force frame 1 are all longitudinally provided with lateral loading beams 5, and the lateral loading beams 5 are provided with longitudinally movable front and rear late...
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The invention discloses a dynamic characteristic test platform of the structure of a full-scale rail of a high-speed railway. The dynamic characteristic test platform is characterized in that the inner side surfaces of two vertical columns loaded with counter-force frames are respectively and longitudinally provided with a horizontal loading beam which is provided with a front horizontal loading actuator and a rear horizontal loading actuator capable of moving longitudinally. The rail consists of more than two types of full-scale rail sections with roadbed foundations; and the rail sections are common ballasted rail sections, floating plate rail sections, CRTSII type plate ballastless rail sections, CRTS II type plate ballastless rail sections, CRTS I type plate ballastless rail sections and CRTS I type double-block type ballasted rail sections. According to the dynamic characteristic test platform, the operation condition of the railway rails with different rail structures can be really simulated to analyze the dynamic action characteristic and a dynamic wheel-rail action force transfer characteristic of a train traveling part on the rail structure, analyze the durability of a rail-roadbed system and check the service life of the rail structure, so that the experimental basis is provided for developing and improving the rail structure.
Description
technical field [0001] The invention relates to a dynamic characteristic test bed of a full-scale track structure of a high-speed railway. Background technique [0002] With the continuous speed increase of existing railway trains and the rapid development of high-speed and heavy-haul railways, the dynamics of railway wheel-rail systems have become more prominent, the relationship between wheels and rails has become more complex, and the dynamic interaction between wheels and rails has become stronger and stronger. As the basic equipment for train operation, the railway track directly bears the load transmitted by the wheels and transmits it to buildings such as roadbeds, bridges and tunnels. Therefore, the bearing capacity and stability of the track structure directly affect the dynamic interaction of the wheels and rails. Then it affects the safety and comfort of railway trains, so it is very important to strengthen the research on modern railway track structure. [0003]...
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Inventor 翟婉明王开云蔡成标刘鹏飞高建敏赵春发
Owner SOUTHWEST JIAOTONG UNIV