This paper presents experimental data associated with the reactions on the spudcan during the reinstallation of a jack-up foundation near a footprint with and without infilling. All experiments mentioned in this paper were conducted in a 1g model spudcan testing facility. Loose Ottawa sand was used as the seabed and infilling material, and the diameter D of the conical model spudcan was 200 mm. Based on the experimental data, it was found that, with the infilling of the footprint crater, a flat bearing surface was generated on the seabed; therefore, the hazardous stamp-on-void situation was prevented. This was the major contribution of the infilling method. At the small reinstallation depth of 0.05D, between the small offsets 0 and 0.25D, the stamp-on-void condition was eliminated by infilling, and the infilling effect was especially significant. At the large offset 2.0D, since the reinstallation was conducted far from the influence of the first penetration and the footprint crater, the infilling effect nearly vanished. The effect of infilling decreased with increasing reinstallation depth and increasing offset distance.

中文翻译：

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用填充方法减少沙地桩上的足迹问题

本文介绍了在有和没有填充的足迹附近重新安装自升式基础期间，与桩桩反应相关的实验数据。本文中提到的所有实验都是在 1 g模型桩靴测试设备中进行的。采用松散的渥太华砂作为海床和充填材料，圆锥模型桩柱的直径D为200 mm。根据实验数据发现，随着足迹坑的填充，海底产生了平坦的承载面；因此，避免了危险的无效印花税情况。这是填充方法的主要贡献。在 0.05 D的小重新安装深度处，在小偏移量 0 和 0.25 D之间，通过填充消除了stamp-on-void的情况，填充效果尤为显着。在大偏移量 2.0 D处，由于重新安装远离第一次穿透和足迹坑的影响，填充效果几乎消失。填充的效果随着重新安装深度的增加和偏移距离的增加而降低。