Reinforcing device of marine suction type cylindrical foundation and construction method of reinforcing device

Abstract

The invention belongs to the technical field of marine structure suction type cylindrical foundations, and provides a reinforcing device of a marine suction type cylindrical foundation and a construction method of the reinforcing device. The cylindrical foundation includes two parts of a cylinder cover and a cylinder body, a drainage valve is arranged on the cylinder cover, and the cylinder body is a double-layer structure including an outer cylinder wall and an inner cylinder wall; the outer cylinder wall and the inner cylinder wall are connected in a sealing mode, and a cavity is left in themiddle; a resistance wire or other heating device for heating is installed in the cavity between the outer cylinder wall and the inner cylinder wall, and the gap between the resistance wire or otherheating device and the inner and outer cylinder walls is filled with a heat-conducting and insulating material; and a plurality of drainage plates are uniformly distributed on the outer cylinder walland the inner cylinder wall. According to the reinforcing device of the marine suction type cylindrical foundation and the construction method of the reinforcing device, the cylinder body is heated byheating the resistance wire or other heating device, and then the temperature of surrounding soil is increased; and the permeability coefficient of the surrounding soil is increased at high temperature, solidification further occurs, the drainage plates arranged on the inner and outer cylinder walls can drain moisture from the soil in time, effective stress of the soil is improved, and the undrained shear strength of the soil is increased.

Description

technical field [0001] The invention belongs to the technical field of marine structure suction cylindrical foundations, and in particular relates to a reinforcement device for marine suction cylindrical foundations and a construction method thereof. Background technique [0002] With the continuous development of offshore oil resources, more and more oil resources will come from the deep water area of ​​the ocean. my country's South China Sea is rich in oil resources and is an important area for the development of deep-sea oil resources. In the development of deep-sea oil resources in the South China Sea, the suction-type cylindrical foundation, as an excellent foundation form, has been widely used in engineering structures such as deep-sea platforms and marine floating structures. [0003] The suction cylindrical foundation is generally a cylindrical structure with an open bottom, a closed top, and a suction port. It has the technical advantages of convenient installation...

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Problems solved by technology

[0005] In order to solve the problems of relatively low foundation bearing capacity caused by the low undrained shear strength of the soil around the suction cylindrical foundation, and the difficulty in recycling the foundation caused by strengthening the suction cylindrical foundation by grouting, the invention discloses a A suction cylindrical foundation device that can reinforce the soil around the cylinder; use the cylinder to heat the soil around the cylinder to promote the consolidation and settlement of the soil around the cylinder, and increase the undrained shear strength of the soil around the cylinder. Thereby improving the bearing capacity of the suction-type cylindrical foundation; its main technical features are: the cylindrical foundation includes two parts: a cylinder cover and a cylinder body; the cylinder body includes a double-layer structure of an outer cylinder wall and an inner cylinder wall; A heating resistance wire or other heating device is installed between the outer cylinder wall and the inner cylinder wall to increase the temperature of the soil around the cylinder; 4-6 drainage boards are evenly arranged on the outer cylinder wall and the inner cylinder wall to timely Drain the water in the soil, increase the effective stress of the soil, and increase the undrained shear strength of the soil

The suction cylindrical foundation strengthened by this method does not have the problem of difficult recycling

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