长输油气管道应力分析仿真技术研究  

Research on Stress Analysis and Simulation Technology for Long-distance Oil and Gas Pipelines

作　　者：王佳旭 付现燕 WANG Jiaxu;FU Xianyan(North China Branch of China Petroleum Engineering&Construction Corp,Renqiu,Hebei,062500,China)

机构地区：[1]中国石油工程建设有限公司华北分公司,河北任丘062500

出　　处：《工程建设(维泽科技)》2025年第3期92-95,共4页Engineering Construction

摘　　要：长输油气管道是我国能源战略的重要组成部分,其结构强度和安全性关系重大。文中针对长输油气管道的应力分析进行了深入研究。采用了有限元方法和仿真技术,以分析管道在各种工况下的应力状况,评估其结构强度和安全性能。研究发现,管道的应力状态受到多种因素的影响,如管道材料、壁厚、直径、长度、内外压力、温度和地质条件等。通过已建立的有限元模型,模拟实验发现在综合这些因素后,管道的最大应力集中在贯穿管道的纵向焊缝附近。同时,模型显示在复杂地理环境(如断层、山地)下,管道应力的增加明显,且容易产生应力集中现象。为此,提出了采取适当的工程措施,如改变管道路径,增加支持结构,使用更优质的材料,以降低管道运行的风险。此外,通过比较不同类型油气管道的应力分析,若综合考量工况、经济性、安全性,提出了更适合我国长输油气管道建设的优化措施。该项应力分析仿真技术的研究,对于确保长输油气管道的安全运行,提高我国能源运输效率具有重要的实践意义。Long-distance oil and gas pipelines are an important component of Chinese energy strategy,and their structural strength and safety are closely related.The article conducted in-depth research on stress analysis of long-distance oil and gas pipelines.Finite element method and simulation technology were used to analyze the stress conditions of pipelines under various working conditions,evaluate their structural strength and safety performance.Research has found that the stress state of pipelines is influenced by various factors,such as pipeline material,wall thickness,diameter,length,internal and external pressure,temperature,and geological conditions.Through the established finite element model,simulation experiments have found that after considering these factors,the maximum stress of the pipeline is concentrated near the longitudinal weld seam that runs through the pipeline.Meanwhile,the model shows that in complex geographical environments such as faults and mountains,there is a significant increase in pipeline stress,and stress concentration is prone to occur.Therefore,appropriate engineering measures have been proposed,such as changing the pipeline path,increasing support structures,and using higher quality materials,to reduce the risk of pipeline operation.In addition,by comparing the stress analysis of different types of oil and gas pipelines,and considering the working conditions,economy,and safety comprehensively,optimization measures more suitable for the construction of long-distance oil and gas pipelines in China have been proposed.The research on stress analysis simulation technology has important practical significance for ensuring the safe operation of long-distance oil and gas pipelines and improving energy transportation efficiency in China.

关 键 词：长输油气管道 应力分析 有限元方法 仿真技术 安全性能 

分 类 号：TE832[石油与天然气工程—油气储运工程]