沿坡敷设输气管道应力分析

长距离的输气管道所经过的区域地形复杂多变,在山区丘陵地带一般采用沿坡敷设的方式,由于高低位差的原因,管道受力不均,且大多沿坡敷设的管道都是根据经验参数设计,很容易发生管道失效。为了在前期设计中研究管道的受力分布,校核其是否符合设计规范和安全要求,使用应力分析软件CAESARⅡ对某沿坡敷设管道进行应力分析,研究安装、试压和运行工况下管道的受力情况,得出沿坡敷设方式的安全性较高的结论。分析结果对沿坡敷设管道的设计和施工提供了相应理论依据,具有工程价值和指导意义。

Analysis on Stress of Gas Pipeline Laid along Slope

The areas where long-distance gas pipelines are laid have very complicated terrains.Gas pipelines are usually laid along slopes in mountainous or hilly areas and pipeline failures occur easily due to unequal forces applied on these pipelines resulting from great height difference of pipeline position.In order to study force distribution of the pipelines and check the accordance with relative design specifications and safety requirements,adopted is the stress analysis software CAESAR Ⅱ to analyze the stress of certain pipeline laid along slope and research the loading conditions of the pipeline under its installation,pressure test and operating conditions and obtained is such result that pipeline laid along slope has higher safety.The analysis result has important engineering value and guiding significance and will provide relative theoretical basis for design and construction of pipelines laid along slope.