【摘要】 本文采用二维有限元方法对连续直埋管道在动力荷载作用下的反应进行分析。管道周围土体采用等效线性粘弹性模型 ;为反映管 -土间的相对滑移 ,在管单元与土单元间加入无厚度Goodman接触单元 ;并利用 Wilson- θ法对管 -土系统进行动力时程反应分析。本文研究了输入波频率 ,输入波幅值 ,管道埋深 ,土体类别和管 -土间摩擦系数等因素对埋管动力反应的影响。更多还原

【Abstract】 Two\|dimension finite element method (FEM) is employed to analyze the response of straight continuous buried pipeline under dynamic load. The soil surrounding the pipeline is supposed of equivalent linear viscoelastic model. Goodman contact elements are added between pipe elements and soil elements in order to simulate relative slip between pipe and soil. Wilson\|θ method is utilized to compute dynamic time\|history response of soil\|pipe system. The effects of wave frequency and amplitude, buried depth, soil property, and soil\|pipe friction are also studied in the paper.更多还原