| An equivalent-boundary method for the shell analysis of buried pipelines under fault movement |
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| 作者姓名： | 刘爱文 胡聿贤 赵凤新 李小军 高田至郎 赵雷 |
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| 作者单位： | Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Kobe University，Kobe 6570013，Japan，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China |
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| 摘 要： | Introduction The history of research work on the response of buried pipeline under the fault movement hasbeen about 30 years. Several simplified design methods have been proposed to obtain the maxi-mum stress or strain in pipe. These methods include the theoretical method and the finite elementmethod (FEM). In the theoretical method, the pipe is usually modeled as a cable (Newmark, Hall1975; Kennedy, et al, 1977) or a beam (Wang, Wang, 1995; LIU, ZHANG, 2002). These theoreti-cal me…
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An equivalent-boundary method for the shell analysis of buried pipelines under fault movement |
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| LIU Ai-wen HU Yu-xian ZHAO Feng-xin LI Xiao-jun Takada Shiro ZHAO Lei Institute of Geophysics,China Earthquake Administration,Beijing ,China Kobe University,Kobe ,Japan.An equivalent-boundary method for the shell analysis of buried pipelines under fault movement[J].Acta Seismologica Sinica(English Edition),2004,17(Z1). |
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| Authors: | LIU Ai-wen HU Yu-xian ZHAO Feng-xin LI Xiao-jun Takada Shiro ZHAO Lei Institute of Geophysics China Earthquake Administration Beijing China Kobe University Kobe Japan |
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| Institution: | 1. Institute of Geophysics, China Earthquake Administration, Beijing 100081, China
2. Kobe University, Kobe 6570013, Japan |
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| Abstract: | A new shell finite element method (FEM) model with an equivalent boundary is presented for estimating the re-sponse of a buried pipeline under large fault movement. The length of affected pipeline under fault movement isusually too long for a shell-mode calculation because of the limitation of memory and time of computers. In thisstudy, only the pipeline segment near fault is modeled with plastic shell elements to study the local buckling andthe large section deformation in pipe. The material property of pipe segment far away from the fault is consideredas elastic, and nonlinear spring elements at equivalent boundaries are obtained and applied to two ends of shellmodel. Compared with the fixed-boundary shell model, the shell model with an equivalent boundary proposed bythe study can remarkably reduce the needed memory and calculating time. |
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| Keywords: | buried pipeline fault movement shell analysis equivalent boundary |
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