摘要
Abstract
The external load (such as geology landslide, collapse, loose soil deposition, collapsible loess, earthquakes, water damage, etc.) caused by complex geological features and poor natural conditions along long-distance the pipeline will result in a large span of vacancy of the pipeline. Slightly inciting the large deformation of the pipeline, a large area of vacancy, the local deformation or stress concentration, resulting in greater displacement and stress, buckling or creep, or even badly cause pipeline rupture, producing pipeline safety hazards. We establish suspended pipeline model in this paper, calculate maximum suspended length of X52 refined oil pipeline by using the theory of elastic foundation, large deflection beam theory, pipeline soil interaction, Winkler presumption model and considering the geometric nonlinearity and soil physical nonlinearity on the basis of Lan-Cheng-Yu, Deyang, Shijiangting oil pipeline large area suspended for flood water.关键词
长输管道/winkler假定/悬空/非线性/有限元仿真Key words
long-distance pipeline/ the winkler presumption/ vacant/ nonlinear/ finite element simulation分类
能源科技
