Based on the 3D fluid–solid coupling numerical calculation method, a systematic study was conducted on the bearing characteristics of a perforated sheet-type sand fence at a given penetration rate, opening size, and wind velocity. According to the results of this study, both the displacement and stress of the sand fence experienced an impact stage, a coupling stage, and a stabilization stage under different wind velocities and times. At the initial moment of the impact stage, both the displacement and stress of the sand fence reached their maximum, i.e., the maximum position of the sand fence displacement was at the top of the panel central line, whereas the maximum position of the stress was at the site of the column 4.5 cm away from the column bottom. The duration of the impact stage was 1.5 s and did not change with the opening size or wind velocity. In the coupling stage, the displacement and stress of the sand fence underwent intense fluctuations, and the amplitude of fluctuations decreased with time. The duration of the coupling stage did not change with opening size, but increased with the increase in wind velocity. In the stabilization stage, both the displacement and stress of the sand fence reached a stable state and did not significantly change with time. In each stage, both the displacement and stress of the sand fence are inversely proportional to the opening size and directly proportional to the wind velocity, i.e., the lower the opening size, the higher the wind velocity, and the greater the displacement and stress of the sand fence. However, when the hole diameter drops below 1.03 cm, it is no longer a main influencing factor of sand fence displacement or stress change. For the sand fence in each stage, the panel displacement was higher than the column displacement, whereas the column stress was higher than the panel stress. This paper provides a basis for the design and optimization of sand fence structures, lays the foundation for establishing a mechanics-physics model for the stress distribution of sand fence structures, and presents relatively high research values.

基于三维流固耦合数值计算方法，系统研究了给定穿透率、开孔尺寸和风速下穿孔片式防沙围栏的承载特性。根据本研究结果，在不同风速和时间下，沙栅的位移和应力均经历了冲击阶段、耦合阶段和稳定阶段。在冲击阶段的初始时刻，沙栅的位移和应力均达到最大值，即沙栅位移的最大位置在面板中心线的顶部，而应力的最大位置为在离柱底 4.5 cm 的柱位。冲击阶段的持续时间为 1。5 s 且不随开口大小或风速变化。在耦合阶段，沙栅的位移和应力发生剧烈波动，波动幅度随着时间的推移而减小。耦合阶段的持续时间不随开度大小而变化，但随着风速的增加而增加。在稳定阶段，沙栅的位移和应力均达到稳定状态，不随时间发生显着变化。在每个阶段，沙栅的位移和应力均与开口尺寸成反比，与风速成正比，即开口尺寸越小，风速越高，其位移和应力越大。沙栅栏。但是，当孔径下降到 1.03 cm 以下时，它不再是沙栅位移或应力变化的主要影响因素。对于各阶段的沙围栏，面板位移大于柱位移，而柱应力大于面板应力。本文为沙栅结构的设计和优化提供了依据，为建立沙栅结构应力分布的力学-物理模型奠定了基础，具有较高的研究价值。