Petroleum Science >2012,??Issue 2:??236-241 DOI: https://doi.org/10.1007/s12182-012-0204-y
Strain-based design for buried pipelines subjected to landslides Open?Access
文章信息
作者：Han Bing,Wang Zhiyin,Zhao Honglin,Jing Hongyuan and Wu Zhangzhong
作者單位：
Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102249, China; PetroChina Pipeline R&D Center, Langfang, Hebei 065000, China;College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China;PetroChina Pipeline R&D Center, Langfang, Hebei 065000, China;PetroChina Pipeline R&D Center, Langfang, Hebei 065000, China;PetroChina Pipeline R&D Center, Langfang, Hebei 065000, China
投稿時(shí)間：2011-07-15
引用方式：Han, B., Wang, Z., Zhao, H. et al. Pet. Sci. (2012) 9: 236. https://doi.org/10.1007/s12182-012-0204-y
文章摘要
Landslides are one of the key problems for stability analysis of pipelines in the western region of China where the geological conditions are extremely complicated. In order to offer a theoretical basis for the pipe-soil interaction, the general finite element program ABAQUS is used to analyze the distribution of pipe strain caused by landslide through which the pipeline passes. In this paper the Ramberg-Osgood constitutive equation is used to study the strain-based mechanics characteristics of pipelines. Different calculation schemas are designed by considering the change of spatial relationship between pipeline and landslide, and the change of D/t, diameter-thickness ratio of pipeline. The results indicate that the pipeline is primarily subjected to tension stress when the landslide crosses the pipeline perpendicularly, the pipe strain is a maximum along the central axis of the landslide, and reverse bending occurs on pipeline at both edges of the landslide. The pipeline is primarily subjected to friction force caused by the downward movement of the landslide, and the friction force is relatively small when the landslide is parallel to the pipeline. The pipe strain is in proportional to D/t, and this means decreasing D/t can help to improve security of pipelines subjected to the landslide.
關(guān)鍵詞
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Landslide; pipeline; strain-based design; numerical simulation; failure mode