Method for closing legs of hydraulic plug-in self-elevating platform

Abstract

The invention provides a pile leg folding method of a hydraulic bolt type self-lifting platform. The method includes the steps of supporting pile shoes and a ship body at preset positions respectively, wherein the pile shoes are supported and fixed by pile shoe supporting devices, the ship body is supported by a ship body supporting device, and the pile shoes are located under a lifting system on the ship body before being folded together with pile legs; first pile leg sections are hoisted and folded, bottom folding seams of the pile leg sections and the pile shoes are folded and welded, and the pile leg sections penetrate through the lifting system on the ship body and are coaxial with the lifting system; the first pile leg sections are locked by the lifting system of the ship body; the locked state of the lifting system and the first pile leg sections is kept, and second pile leg sections, third pile leg sections...and nth pile leg sections are sequentially upward folded section by section. The folded first pile leg sections are locked on the ship body through the lifting system, the weight borne by the pile shoe supporting devices can be shared on the ship body supporting device, safety risks are reduced, folding precision is improved, and operation safety is ensured.

Description

technical field [0001] The invention relates to the field of offshore platforms, in particular to a method for closing legs of a hydraulic plug-type self-elevating platform. Background technique [0002] The pile legs of the jack-up platform are mainly divided into truss type and cylindrical type in terms of structure, and are mainly divided into rack meshing type and hydraulic pin type in terms of lifting method. [0003] For the traditional truss-type or cylindrical rack-engaging spud legs, the design of the spud-can legs is relatively light, and the spud-cans do not need to be subjected to hydraulic structural tests. Therefore, when the spud-can legs are closed, the spud-can The weight required to support the tire frame at the bottom is the total weight of the spud boots and the piled leg segments closed on the land. The layout of the supporting tire frame is not difficult, and the pressure transmitted by the supporting tire frame to the ground will not exceed the load be...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for closing the legs of a hydraulic plug-in self-elevating platform, which solves the problem that the legs of the self-elevating platform in the prior art are heavy and require structural tests during the construction of the legs of the self-elevating platform. , after all the weights mentioned above are superimposed, there are high requirements for the supporting tire frame, and it is easy to cause damage to the ground, thus affecting the closing accuracy and poor safety.

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