A Seismic Design Method for Subsea Pipelines Against Earthquake Fault Movement  

作　　者：段梦兰 毛东风 岳志勇 Segen Estefen 李志刚 

机构地区：[1]Offshore Oil/Gas Research Center, China University of Petroleum [2]School of Mechanical Engineering,Yangtze University [3]Department of Mechanics and Engineering,Peking University [4]COPPE,Federal University of Rio de Janeiro [5]COOEC

出　　处：《China Ocean Engineering》2011年第2期179-188,共10页中国海洋工程（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 50979113);the National High Technology Research and Development Program of China (863 Program, Grant No. 2006AA09A105);the China National Offshore Oil Corporation

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 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.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.

关 键 词：subsea pipeline seismic design permanent fault movement 

分 类 号：P756.2[天文地球—海洋科学] TU352[建筑科学—结构工程]