To high earth, projecting conduit with flexible filler over conduit,FEM s method is applied to calculate soil body and flexible filler according to different mediume of elasto-viscoplastic model, and calculates concrete conduit by using elasto-plastic model, so that the stress of conduit and earth pressure over conduit is obtained.
对高填土、管顶填筑柔性填料的上埋式管道，用有限元法，将上体和柔性填料，按不同介质的弹粘塑性模型计算；混凝土管道由弹塑性模型进行计算，并求出管道的应力及管道外的土压力。