Prefabricated concrete cap with reserved foundation ring hole and pile socket ring hole and installation method of prefabricated multi-pile foundation based on the cap

Abstract

The invention provides a prefabricated concrete cushion cap preserved with a foundation ring hole and a pile recess ring hole and a mounting method of an assembly type multi-pile foundation based on the cushion cap. A preserved foundation ring hole which is coaxial with a concrete body of the prefabricated concrete cushion cap is arranged in the center of the top surface of concrete body; a preserved pile recess ring hole passing through the top surface and the bottom surface of the concrete body is formed in the edge of the concrete body; a plurality of circumferentially-arranged connecting steel beams are arranged between the inner and outer ring surfaces of the preserved pile recess ring hole; portions of the preserved pile recess ring hole between adjacent connecting steel beams form a preserved pile recess hole. Compared w prefabricated concrete cushion cap has the advantages that offshore form erecting and form stripping procedures are eliminated. Meanwhile, a large amount of offshore field steel bar binding can be completed in a land prefabrication plant, thereby greatly increasing the construction efficiency, saving the offshore bearing cap construction time, and meanwhile reducing the construction cost.

Description

technical field [0001] The invention belongs to the technical field of foundation structures of towering structures in offshore wind power construction projects, and relates to a prefabricated concrete cap with reserved foundation ring holes and pile socket ring holes and an installation method for an assembled multi-pile foundation based on the cap, which is suitable for Support basic structures such as wind turbine towers, offshore booster stations, transmission line towers, etc. Background technique [0002] With the vigorous development of clean energy, my country's offshore wind power is about to usher in a large-scale construction climax. Among them, the foundation design technology of offshore wind turbines is a key link in wind power projects. In view of the combined effects of extreme wind speed, waves and other loads and environmental disasters in my country's offshore waters, weak and complex foundations, and limited construction conditions, traditional multi-pile...

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Problems solved by technology

Among them, the foundation design technology of offshore wind turbines is a key link in wind power projects. In view of the combined effects of extreme wind speed, waves and other loads and environmental disasters in my country's offshore waters, weak and complex foundations, and limited construction conditions, traditional multi-pile foundations are driven first. However, the construction inside the cap is all at sea, requiring waterproof steel casings, steel bar binding, embedded parts and leveling, and there are problems such as complex construction process and long period

Offshore wind power prefabricated multi-pile foundation can reduce offshore operation time, but wind turbines have strict requirements on the flatness of the foundation

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