In this study, the dynamic response of buried fluid-conveying pipelines subjected to blast loading using the Love shell theory has been investigated. The fluid is considered as ideal fluid, and the velocity potential is used to describe the fluid pressure acting on the pipeline. The governing equations of the buried fluid-conveying pipelines are derived through Hamilton’s principle. The modal superposition method and the Newmark integral method are used to analyze the dynamic response of the pipelines under blast loading. Results show that the displacement amplitudes of the pipelines are larger in the soil with a higher acoustic impedance. The Winkler foundation can enhance the stiffness of the pipelines. Moreover, the increase in the scaled distance leads to the decrease in the displacement amplitudes of the pipelines. The increase in the fluid velocity results in the rise of the displacement amplitudes of the pipelines. In addition, the maximum displacement increases first and then decreases with the increase in length-to-radius ratio of the pipelines. With the increase in thickness-to-radius ratio, the maximum displacement of the pipelines tends to decrease.

在这项研究中，利用洛夫壳理论研究了爆炸载荷作用下埋藏式输水管道的动力响应。流体被视为理想流体，速度势用于描述作用在管道上的流体压力。根据汉密尔顿原理推导了地下输液管道的控制方程。采用模态叠加法和Newmark积分法分析了爆炸荷载作用下管道的动力响应。结果表明，在声阻抗较高的土壤中，管道的位移幅度较大。Winkler基础可以增强管道的刚度。此外，缩放距离的增加导致管道的位移幅度减小。流体速度的增加导致管道的位移幅度的增加。另外，最大排量随着管道的长径比的增加先增大然后减小。随着厚度/半径比的增加，管道的最大位移趋向于减小。