Free Vibrations of Thin-Walled Gas Pipelines Taking into Account the Influence of Longitudinal Force During Trench Laying

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A numerical experiment was carried out to determine the frequencies of free oscillations of an inhomogeneous pipeline at various mechanical and geometric parameters.This made it possible to establish the influence of factors such as longitudinal force, thickness of the reinforced concrete shell, internal working pressure and the coefficient of the soil bed on the system’s own vibrations. For calculations, a model of an inhomogeneous cylindrical two-layer shell of finite length consisting of a steel pipe and a protective reinforced concrete layer was chosen.

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作者简介

V. Sokolov

Industrial University of Tyumen

Email: volynec-s@bk.ru

Doctor of Sciences (Engineering)

俄罗斯联邦, 38, Volodarskogo Street, Tyumen, 625000

A. Dmitriev

Industrial University of Tyumen

Email: dmitrievav@tyuiu.ru

Candidate of Sciences (Engineering)

俄罗斯联邦, 38, Volodarskogo Street, Tyumen, 625000

S. Volynets

Industrial University of Tyumen

编辑信件的主要联系方式.
Email: volynec-s@bk.ru

Engineer

俄罗斯联邦, 38, Volodarskogo Street, Tyumen, 625000

参考

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  2. Shakiryanov M.M. Spatial nonlinear vibrations of a pipeline under the action of internal shock pressure. Izvestiya of the Russian Academy of Sciences. Solid Body Mechanics. 2019. No. 6, pp. 76–84. (In Russian). https://doi.org/10.1134/S0572329919060114
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2. Fig. 1. Calculation model of a heterogeneous gas pipeline

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3. Fig. 2. Reaction of elastic ground support

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4. Fig. 3. Dependence of free vibration frequencies on internal working pressure of a buried gas pipeline at variable values of concrete shell thickness

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5. Fig. 4. Dependence of free vibration frequencies on internal working pressure of a buried gas pipeline with variable values of the length of the pipeline

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6. Fig. 5. Dependence of free vibration frequencies on the subgrade coefficient of a buried gas pipeline at variable internal working pressure values

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7. Fig. 6. Graph of w2,1 dependence on K at static parameters P_ 0.1; L/R 8.00; hb 3.00 cm; hs 1.00 cm and various h/R ratios

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8. Fig. 7. Graph of the dependence of free oscillation frequencies on the parameter of the longitudinal compressive force on the free oscillation frequencies for different values of the internal working pressure

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