Modular apron board pile shoe of self-elevating drilling platform and drilling platform

Abstract

The invention discloses a modular apron board pile shoe of a self-elevating drilling platform. The modular apron board pile shoe is characterized by comprising a pile shoe body and a plurality of apron board modules uniformly distributed on the outer side of the pile shoe body at intervals, wherein each apron board module comprises an apron board connector connected to the outer side of the pile shoe body and an apron board main body connected to the bottom of the apron board connector, the apron board main body is of a closed structure or a semi-closed structure, and the lowest point of the apron board main body is lower than the lowest point of the pile shoe body. The apron board main bodies in the apron board modules are inserted into a hard soil layer before the pile shoe body, so that a hard-upper-layer and soft-lower-layer egg shell stratum can be damaged in advance, namely the structure of the hard soil layer is damaged, the bearing capacity of a foundation is reduced, and the puncture risk in the pile inserting process is reduced; and gaps exist between the apron board modules, soil at the bottom of the pile shoe body is extruded and then discharged from the gaps between the apron board modules, a soil backflow channel is formed, and the influence of the apron board modules on ballast in a soft soil layer is reduced.

Description

technical field [0001] The invention relates to a self-elevating drilling platform, in particular to a modular skirt pile shoe of the self-elevating drilling platform, which belongs to the technical field of marine engineering. Background technique [0002] The jack-up platform is one of the important large-scale equipment for offshore construction operations. At present, spud cans are widely used as the support structure between the platform and the foundation in jack-up platforms. Its form is usually a circular or polygonal steel structure with upper and lower cones, so as to increase the resistance of pile ends and provide a stable support carrier for the platform. However, the spud cans of the traditional jack-up platform have a large area and a relatively gentle slope at the bottom. When encountering the "egg shell" stratum with a hard upper layer and a softer lower layer, a sudden change in the bearing capacity of the upper and lower layers will occur, that is, the bea...

AI Technical Summary

Problems solved by technology

However, the spud cans of the traditional jack-up platform have a large area and a relatively gentle slope at the bottom. When encountering the "egg shell" strata with a hard upper layer and a softer lower layer, a sudden change in the bearing capacity of the upper and lower layers will occur, that is, the bearing capacity of the lower foundation suddenly decreases. Bring puncture risk to the platform, and in severe cases, it will affect the overall structural safety of the platform

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