This paper presents the results of tests employing a reduced-scale three-legged jack-up unit to investigate the influence of reinstallation close to a footprint. These tests were conducted at 1g in a large earth tank using a scaled three-legged jack-up unit model with rectangular spudcans. The legs were fixed to the hull and had scaled flexural rigidity to ensure stress similitude between the model and prototype. A flexible connection was used between the loading device and platform model. The horizontal force and bending moments on the leg and inclination angle of the platform were recorded. The effect of offset distance was investigated, and the offset distance was set as 0.5, 1.0, and 1.5 times of the length of the spudcan. The load on three legs were analyzed separately, and the footprint governs the moment and horizontal force before spudcan fully embedded; after that, the component force of bearing capacity would make the platform continue to incline. Legs on the front and rear side of the platform have opposite bending moments and horizontal forces.
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