Axial Vibration Analysis of Buried Pipeline under Earthquake Interaction

Abstract:

The model of buried pipeline is adopted as Euler-Bernoulli beam, which is acted by inner fluid and outer constrained soil. The differential equation of axial vibration is deduced, applying the Hamilton principle. The differential equation of axial vibration is changed into basic form of dynamics equations, considering earthquake excitation as random wave. Utilizing the method of the elasticity time-travel analysis to programming, the responses of the displacement and acceleration at the pipe midpoint obtained, moreover the pipe elements are analyzed. The soil parameter, pipe parameter, earthquake dynamic parameter are considered as the influence elements of pipe response. The characteristic of the soil has an influence on response of velocity and acceleration. Along with soil from soft to hard, the response of acceleration becomes smaller and smaller. In the same soil, the earthquake damage rate of the piping increases along with earthquake intensity increasing.

• Periodical: Advanced Materials Research (Volumes 457-458)
• Pages: 1137-1141
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.457-458.1137
• Online since: January 2012
• Authors: Ting Yue Hao
• Keywords: Axial Vibration, Buried Pipeline, Displacement, Earthquake Interaction

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