A method for testing the optimal stiffness limit of magnetic levitation track beams

Abstract

The invention provides a test method for the optimal stiffness limit of a magnetic levitation track beam. With breaking of the traditional concept, the verification stiffness is transformed into the measurement stiffness; and follow-up design work is realized conveniently. Optimal stiffness limits of different models at different running speeds are determined effectively. The test precision is high during the measuring process; level-by-level multi-times stiffness adjustment is carried out conveniently; the adjustment is precise; and the adjustment gradient is flexible and variable. The methodis also suitable for the verification link with high precision and full verification. One same hollow box body can be applied to multiple tests repeatedly, so that wasting is reduced, energy-saving and environment-friendly effects are realized, and the test cost is lowered. Under the condition of multi-span hollow box body existence, different stiffness values are adjusted for different hollow box bodies simultaneously and multiple groups of data can be obtained by one test, so that the test efficiency is increased effectively, the work difficulty of the field test is reduced, and the test cycle is shortened. And thus the construction cost and operating cost of the magnetic levitation railway are lowered. The test method has the great significance in the promotion and development of the magnetic levitation railway in China.

Description

technical field [0001] The invention relates to the technical field of magnetically suspended track beams, in particular to a method for testing the optimal stiffness limit of the magnetically suspended track beams. Background technique [0002] The maglev track beam structure is the main bearing structure of maglev transportation. When the stiffness of the track beam is high, the ride comfort is good, but the cost is high; when the stiffness is small, the ride comfort is poor, but the cost can be reduced. 60% to 80% of the construction cost, so the stiffness of the track beam not only directly affects the running stability of the vehicle and the ride comfort of the passengers, but also determines most of the cost of the maglev line. Therefore, a reasonable stiffness design value is to ensure the project economy and the key to stable operation. At present, several medium and low-speed maglev lines have been put into operation in China, such as Changsha Maglev Airport Line a...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the stiffness limit value of the existing maglev track beam structure is relatively conservative, and verification rather than measurement is mainly used when designing stiffness, and at the same time, the verification link is insufficient, resulting in the lack of an optimal track beam suitable for my country's maglev vehicle models. Stiffness limit, resulting in high cost of track beams, waste of cost and other shortcomings, to provide a test method for the optimal stiffness limit of maglev track beams

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