本文研究了埋设在半无限介质回填土矩形沟中的管线的动力反应。该管线为圆柱壳体,管壁很薄。利用边界积分表达式和有限元方法,我们研究了三维反应,以计算在任意平面上,从任意角度到管轴线入射的P波或SV波。给出了法向位移、沿管轴线的位移和管壁中环向应力的数值结果。结果表明,这种反应取决于回填土材料和入射波传播方向。 This paper studies the dynamic response of a pipeline embedded in a rectangular trench in a semi-infinite medium backfill. The pipeline is a cylindrical shell with a thin wall. Using the boundary integral expressions and the finite element method, we studied the three-dimensional reaction to calculate the P-wave or SV-wave incident on an arbitrary plane from any angle to the tube axis. The numerical results of normal displacement, displacement along the axis of the tube and hoop stress in the tube wall are given. The results show that this reaction depends on the backfill material and the direction of propagation of the incident wave.