【摘 要】
：
As there are no specific guidelines on design of subsea pipelines crossing active seismic faults, methods for land buried pipelines have been applied to. Taking
【机 构】
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Offshore Oil/Gas Research Center,School of Mechanical Engineering,Department of Mechanics and Engine
【基金项目】
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The paper was financially supported by the National Natural Science Foundation of China;the National High Technology Research and Development Program of China;the China National Offshore Oil Corporati
论文部分内容阅读
As there are no specific guidelines on design of subsea pipelines crossing active seismic faults, methods for land buried pipelines have been applied to. Taking the large seismic fault movement into account, this paper proposes improved methods for seismic designs of subsea pipelines by comprehensively investigating the real constraining of soil on the pipelines, the interaction processes of soil with the pipeline, the plastic slippage of the soil, and the elastic-plastic properties of the pipeline materials. New formulas are given to calculate the length of transition section and its total elongation. These formulas are more reasonable in mechanism, and more practical for seismic design of subsea pipelines crossing active faults.
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