为研究管袋堤体结构的安全可靠性,借助大型岩土FLAC3D软件,采用快速拉格朗日时域有限差分法对某高水位下的管袋堤体进行静动力数值模拟计算。结果表明,在水压力和浪压力作用下该管袋堤体未产生较大变形,边坡稳定安全系数较高,管袋层之间无相对滑动;抗震设防烈度7度条件下堤顶部分变形较大,堤体结构有效高度下降较多,砂土层液化度达0.9,有发生液化的可能,应采取有效的抗液化措施对地基进行处理。 In order to study the safety and reliability of tubular pontoon bank structure, a fast Lagrangian time-domain finite difference method was applied to calculate the static and dynamic numerical values ​​of the tubular pouch bank under a high water level with the help of large-scale rock and soil FLAC3D software. The results show that under the action of water pressure and wave pressure, there is no big deformation of the bank and the safety coefficient of the slope is high, and there is no relative sliding between the pipe layers. The partial deformation of the dike under seismic intensity of 7 degrees Large, the effective height of the dike structure decreased more, sand layer liquefaction degree of 0.9, the possibility of liquefaction, should take effective anti-liquefaction measures to deal with the foundation.