Reinforced spiral pipe and reinforced spiral pipe suction barrel foundation and using method thereof

Abstract

The invention discloses a strengthened spiral pipe, a strengthened spiral pipe type sucking force barrel foundation and a using method of the strengthened spiral pipe type sucking force barrel foundation. The strengthened spiral pipe comprises an outer sleeve and a core bolt which penetrates the outer sleeve in the longitudinal direction; and the periphery of the sucking force barrel foundation are evenly provided with a plurality of strengthened spiral pipes. The using method includes the steps of (1), self weight sinking; (2), water flushing sinking; (3), correcting; (4) bottom end soil strengthening; (5), layer-by-layer strengthening of soil; (6), taking out of the core bolt; (7), installing of the core bolt: (8), grinding of the inner wall of the outer sleeve: (9), replacing of an inner piston; (10), scattering of bottom soil; (11), layer-by-layer scattering of soil; (12), elevating of the sucking force barrel foundation; and (13), recycling of the sucking force barrel foundation.According to the strengthened spiral pipe, the strengthened spiral pipe type sucking force barrel foundation and the using method of the strengthened spiral pipe type sucking force barrel foundation,control over the three stages of the full-service-life period of the sinking stage, the grouting strengthening stage and the recycling stage of the sucking force barrel foundation is achieved.

Description

technical field [0001] The invention relates to a reinforced spiral tube and a reinforced spiral tube type suction bucket foundation and a method for using the same, and belongs to the technical field of marine foundation bearing devices. Background technique [0002] The suction barrel foundation is a kind of marine foundation, which has the advantages of fast installation speed, high bearing capacity, recyclability, and relatively low cost. It is widely used as the foundation of offshore wind power and offshore oil platforms. [0003] The suction barrel foundation sinks to the specified depth through two stages of self-weight sinking and negative pressure sinking. Effectively reducing the sinking resistance during the sinking process is the key factor for the success of the installation. The existing method for reducing the sinking resistance of the thin-walled steel suction barrel foundation The main method is to spray high-pressure water flow inside and outside the bucke...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the defects of low resistance reduction efficiency of high-pressure water flow and increased bucket end resistance caused by bearing ring, and the lack of grout diffusion orientation in the grouting around the bucket, or even though the grouting can be oriented, the suction bucket after grouting In order to solve the problem that the foundation cannot be recycled, the present invention discloses a reinforced spiral tube and a reinforced spiral tube type suction bucket foundation and a method for using the same. The specific technical scheme is as follows:

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