DEFORMABILITY MODEL OF SUBSIDENCE OF SOIL FOUNDATION OF THE RAILWAY TRACK WITH THROUGHPUT OF A LARGE NUMBER OF TRAINS OF DIFFERENT CAPACITY
A. V. Anisin, I. M. Anisina, S. S. Nadyezhin, V. O. Pevzner, V. P. Solovyev, V. V. Tretyakov, I. V. Tretyakov
VANT. Ser.: Mat. Mod. Fiz. Proc 2021. Вып.4. С. 67-75.
A model of standard linear solid is studied as applied to the description of roadbed deformation when loaded with trains. Earlier it was shown that in a particular case of cyclic sinusoidal loads on the rail the model of standard linear solid describes well both the deformation of the ground under the load and relaxation of the ground after unloading. The paper analyzes experimental data obtained by specialists from VNIIZhT at Kovdor-Pinozero railway haul. The model of standard linear solid is extended to the case of a random form of loading function. Applicability of this model is proved in case of the load non-uniform in depth. Simple evaluating formulas are suggested for ground deformation when one or several trains pass there as a function of the number and the mass of passing train sets of cars, and for the railway track relaxation after the trains have passed. The produced method makes it possible to predict the growth of dynamic retreats in a vertical plane when long train sets of cars pass, which is necessary for planning lining works. Keywords: a railway track, sub-ballast foundation, track subsidence, a model of a standard linear solid, viscosity.
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