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

Abstract

The invention provides a prefabricated concrete bearing platform with a reserved foundation ring hole and reserved pile nest holes and a fabricated multi-pile foundation installation method based on the prefabricated concrete bearing platform with the reserved foundation ring hole and the reserved pile nest hole. The reserved foundation ring hole coaxial with a concrete body is formed in the center of the top face of the concrete body of the prefabricated concrete bearing platform, of the multiple evenly-distributed reserved pile nest holes are formed in the position, located on the outer side of the vertical face where the periphery walls of the reserved foundation ring hole are located, on the bottom face of the concrete body, and the top of each reserved pile nest hole is provided with a grouting hole way penetrating through the top face of the concrete body. Compared with a multi-pile foundation (high-pile bearing platform foundation) construction scheme used in a sea wind turbine generator at present, sea formwork erecting and disassembling working procedures are omitted, and meanwhile a large amount of sea scene reinforcing steel bar binding can be completed in a prefabrication factory on land; the construction efficiency is greatly improved, the sea bearing platform construction time is saved, and meanwhile the construction cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of the foundation structure of towering structures in offshore wind power construction projects, and relates to a prefabricated concrete cap with reserved foundation ring holes and pile socket holes and an assembly-type multi-pile foundation installation method based on the cap, which is suitable for supporting such as 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 mult...

AI Technical Summary

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 of the caps is all at sea, requiring waterproof steel casings, steel bar binding, embedded parts, and leveling. There are problems such as complex construction processes and long periods.

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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