埋地管道在地震波作用下的抗震性能分析

Analysis on Anti-seismic Properties of Buried Pipelines under the Action of Seismic Waves

埋地管道是一种特殊的地下结构 ,地震时由于管道与砂土等介质的相互作用而引起管道运动 ,在管道中产生地震应力。针对地震波作用下埋地管道的运动特点 ,运用振动和抗震动力学理论 ,推导了埋地管道的振动运动方程和管土间相互作用的传递系数 ,进而求出了管道最大的轴向应力和弯曲应力。最后 。

Buried pipeline is a particular kind of underground structure.The seismic stress in pipelines is caused by the interaction between pipelines and soil while earthquake.According to the moving characteristics of buried pipelines under the action of seismic waves the vibration equation and the transmitting coefficient for the interaction between pipelines and soil are derived by the theory of vibration and seismic dynamics,from which the maximum axial stress and the bending stress in pipelines are solved.The influence of parameters of soil and pipelines on anti-seismic properties of the buried pipelines is discussed through a project example.