滑坡条件下埋地管道的应力分析
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摘要
根据滑坡体与埋地管道的管-土作用原理,提出横向滑坡和纵向滑坡条件下管道外载的计算方法,基于壳单元和土弹簧单元,建立两种工况下管道的有限元计算模型。管道受拉压作用而存在三个应力集中区,分别处于两端和中部。除滑坡规模等常规因素外,横向滑坡两侧场地土体性质对管道的受力和变形有明显影响。
According to pipeline-soil interactive theory between landslide body and buried pipeline,the calculating method of pipeline external load under the transverse and vertical landslide conditions is proposed. The finite element models of pipeline under the two conditions are built based on shell and spring elements. There are three stress concentration regions at two ends and middle of the pipeline due to tension.The nature of soil at two sides of the transverse landslide has significant influence on stress and deformation of pipeline besides conventional factors like landslide scale.
引文
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