Design method for the spacing between the suction piles at the double well mouth of the ocean
The ocean dual-borehole suction pile,with its boreholes symmetrically distributed on both sides of the pile's central axis,is subject to significant eccentric load effects during the drilling and subsequent testing operations due to the asymmetrical loading of one borehole.This study,based on the soil conditions of the target area and borehole loading,conducts a design analysis of the dual-borehole suction pile's borehole spacing,specifically for an outer diameter of 2～4 meters.By applying the overturning instability theory,which encompasses two modes of instability—small displacement instability and large displacement overturning—the study examines the impact of environmental loads on structural stability.Environmental parameters and safety factors are selected in accordance with API standards.A sensitivity analysis of the pile Height,penetration depth,and borehole spacing parameters is performed to determine their effects on the pile's overturning performance.The study recommends a borehole spacing of 3.5 meters to ensure structural stability and prevent interference between borehole equipment.
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NSTL
万方数据
维普
