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考虑地下管道管土及管液之间的相互作用,研究了管道在沿轴线方向传递的剪切波和压缩波波动作用下的动力响应,得出了有关土壤剪切模量、管径及流速对其动力响应影响的初步结论;对于地上输液管道,考虑管液之间的相互作用,研究了其动特性和在端点输入的地震动作用下的动力响应,得出了管内液体流动对系统固有频率及动力响应影响的初步结论;指出地下与地上管道震害原因的区别;采用有限元方法求解了运动方程.
Considering the interaction between pipe and soil in underground pipelines, the dynamic response of pipe under the action of shear wave and compression wave propagating in the axial direction was studied. The relationship between shear modulus, pipe diameter and flow velocity And the dynamic response of the liquid pipe to the dynamic response of the pipe was studied. For the above-ground fluid pipelines, considering the interaction between pipe fluids, Frequency and dynamic response. The paper also points out the difference between the causes of earthquakes in underground and aboveground pipeline. The finite element method is used to solve the equations of motion.