Differential Quadrature Method to Analyze Natural Characteristics of Buried Pipelines in Liquefaction Soil

Abstract:

On the basis of fluid-structure-interaction of the liquefaction soil, pipeline and the conveying fluid, in this paper, the differential vibration equations of the buried pipeline are deduced. The differential quadrature method (DQM) was tried to use to analyze the natural frequency of buried pipeline in liquefaction soil under the effect of flow velocity, fluid density, pressure in pipe, viscosity of pipe, axial force, elastic coefficient of the soil. Some preliminary conclusions concerning with the natural frequency of buried pipeline are also obtained. The theoretical research of the seismic effect on the pipeline in the liquefaction soil is presented.

• Periodical: Advanced Materials Research (Volumes 765-767)
• Pages: 749-754
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.765-767.749
• Online since: September 2013
• Authors: Ri Dong Bao
• Keywords: Buried Pipeline, DQM, Dynamic Characteristic, Natural Frequency, Soil Liquefaction

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