摘要
隧道内的弯管很容易产生应力集中,从而导致管道失效。确定了隧道内输气管道在运行工况下所受载荷及支撑约束等边界条件,针对某隧道穿越管道,采用应力分析软件CAESARⅡ建立了运行工况下的应力分析模型,并进行应力分布,明确集中应力关键点的位置。分析结果表明:管道内压是引起管道应力的主要因素,温度和管道自重为次要因素。提出的应力分析方法对隧道穿越管道设计有一定的借鉴意义。
The stress concentration easily occurs in bend pipe in tunnel and thus causes pipeline failure.This paper determines the boundary conditions of tunnel gas pipeline,such as the load under operating conditions,support constraints,etc.and for a tunnel crossing pipeline,it is necessary to establish a operating condition's stress analysis model to make stress analysis with software CAESAR Ⅱ and carry out a stress distribution,and clarify the key point location of stress concentration.The analysis results show that the internal pressure of the pipeline is a primary factor that causes pipeline stress,and temperature and pipeline weight are secondary factors.The proposed stress analysis method will be of certain reference significance for tunnel pipeline.
出处
《油气储运》
CAS
2012年第12期927-930,967,共4页
Oil & Gas Storage and Transportation
关键词
隧道
输气管道
运行工况
应力分析
tunnel,gas pipelines,operation condition,stress analysis
