The velocity of seismic wave propagation along the pipelines, soil-pipe interaction, and the correlation between the damage of pipe units are discussed. 探讨了地震波沿管道的传播速度,管-土相互作用,管单元的失效相关性等问题。
Inertia forces, fluid-soil coupling and soil-pipe interaction were considered in the finite-element dynamic equations derived using the Galerkin discrete method and Newmark-β method in the governing equations. An Absorbing boundary condition was introduced to simulate horizontal infinite soil region by finite elements. 考虑了惯性力以及水土耦合作用、管土相互作用的影响,对控制方程采用标准Galerkin离散法和Newmark-β法建立有限元动力方程,并引入传输边界条件来模拟土体水平方向的无限性。
The next, the soil-pipe interaction is nolinear, which shows in the friction effect between soil and buried pipeline, and in the contact situation between them. 其次,土体与管线的相互作用具有非线性,体现在土与管线的摩擦非线性和土与管线的接触非线性;