Vibration of Fluid-Filled Pipeline Buried in Soil

Liquid-filled pipelines buried in soils are commonly used structural components in lifeline engineering. The aim of this paper is to analyze the vibration of such a component under axial excitation with due consideration of soil-pipe-liquid interaction. Besides the formal solution of the system some numerical results are obtained for certain values of material and structural parameters, which shed, to some extent, light on the effect of the contained and the surrounding soil on the pipe response. Meanwhile, the frequency of free vibration, the dynamic amplification factor versus frequency of excitation, and the displacement response time history due to the excitation of 1971 San Fernando earthquake wave form are given.