A Shell Model of a Buried Pipe in a Seismic Environment
G.E. MuleskiEngineering Science Program, University of Notre Dame, Notre Dame, Ind. 46556T. ArimanDepartment of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Ind. 46556C. P. AumenDepartment of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Ind. 46556
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Аннотация
In a number of recent investigations, a buried pipe undergoing seismic excitation was modelled as a beam on a visco-elastic foundation. However, it is known that two of the observed failure modes in the buried pipelines under seismic loads are buckling and fracture. Therefore, in this paper, a thin circular cylindrical shell model in a resisting soil medium is used for a buried pipe. The coupled equilibrium equations arising from this model are modified to yield three decoupled equations which somewhat simplify the analysis. Then, an application for a long buried pipe is presented and the results are discussed and compared with those of the beam model.
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