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Dynamic Analysis of Buried Pipeline under Earthquake Interaction
According to the Hamilton principle, the differential equation of transverse vibration was derived. Taking earthquake excitation as random wave, applying the method of elasticity time-history analysis, the response of displacement and acceleration at the midpoint were obtained. In the following analysis, with silty clay, fine sand and sandy clay representing soft soil, medium hard soil and hard soil respectively, one can find that with soil becoming harder, transverse displacement decreased continuously. So it could be concluded that under the earthquake excitation, the pipeline's deformation was mainly caused by deformation of foundation. Through comparative analysis, pipe with low intensity and soft foundation can be more easily destroyed than that with high intensity and hard foundation. So the characteristics of foundation had a great influence on pipe destruction. By additional analysis, it can be seen that with increase of liquid velocity in the pipeline caused by earthquake excitation, and leading first to water hammer, then to pipeline destruction, and this case sometimes occurs.
Dynamic Analysis of Buried Pipeline under Earthquake Interaction
According to the Hamilton principle, the differential equation of transverse vibration was derived. Taking earthquake excitation as random wave, applying the method of elasticity time-history analysis, the response of displacement and acceleration at the midpoint were obtained. In the following analysis, with silty clay, fine sand and sandy clay representing soft soil, medium hard soil and hard soil respectively, one can find that with soil becoming harder, transverse displacement decreased continuously. So it could be concluded that under the earthquake excitation, the pipeline's deformation was mainly caused by deformation of foundation. Through comparative analysis, pipe with low intensity and soft foundation can be more easily destroyed than that with high intensity and hard foundation. So the characteristics of foundation had a great influence on pipe destruction. By additional analysis, it can be seen that with increase of liquid velocity in the pipeline caused by earthquake excitation, and leading first to water hammer, then to pipeline destruction, and this case sometimes occurs.
Dynamic Analysis of Buried Pipeline under Earthquake Interaction
Chen, Guiqing (author) / Hao, Tingyue (author)
International Conference on Pipelines and Trenchless Technology (ICPTT) 2009 ; 2009 ; Shanghai, China
ICPTT 2009 ; 1167-1173
2009-09-15
Conference paper
Electronic Resource
English
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