【摘要】 利用虚功原理,利用弹性地基梁模拟地下管线建立分析模型,采用非线性有限元法对热输油管线液化砂土中上浮反应进行了研究,并考虑了管线的轴力、管线的直径、液化区的长度、土弹簧的非线性等影响。更多还原

【Abstract】 In this paper,the formulae are deduced for the floatation response of heated pipelines laying in liquefied soil on the basis of virtual work principle.A beam model of elastic foundation beam is set up,and a computer program based on finite element method has been developed.This research is to study the effects of several important parameters including the axial force of pipeline,the diameter of pipeline,the length of liquefied zone,and the nonlinear soil constraint.更多还原