Gravity type offshore wind turbine generator set foundation and towing and sinking method thereof

Abstract

A gravity type offshore wind turbine generator set foundation capable of being towed is composed of a connecting section, a foundation body, a gravel pile and a floating box. The foundation body is composed of a foundation base and a reinforced concrete conic cylinder, the foundation base comprises a bottom board and a rib board, the outer edge of the bottom board is provided with a bottom board ring beam, the circular bottom board is fixed to a rock foundation through grouting, and the top of the rib board is provided with a rib board ring beam; the top of a reinforced concrete circular cylinder at the connecting section is connected with a fan tower through a flange; the floating box is a closed box body welded through steel and the top of the floating box and the bottom of the floating box are provided with an air discharging valve and a water discharging valve respectively; the floating box and the outer side rib board ring beam are provided with connecting components and connected through hinge pins so that the floating box can be fixed or retracted. The gravity type offshore wind turbine generator set foundation has the advantages that the gravity center of the gravity type offshore wind turbine generator set foundation is low, the good stability and the safety are achieved in the towing transportation process and the sinking process, the material use amount of the foundation is small, prefabrication installation is convenient and rapid, the construction period is short, the construction cost is low, the economical efficiency is good, and popularization and application are facilitated.

Description

technical field [0001] The invention relates to the construction of offshore wind power foundations, in particular to a gravity type offshore wind turbine foundation and its towing and sinking methods. Background technique [0002] At present, the types of foundations for offshore wind power mainly include monopile foundations, tripod foundations, gravity foundations, cylindrical foundations, and floating foundations. The traditional gravity foundation uses its own weight to maintain structural stability. It has a simple shape and is easy to design. However, due to its heavy weight, the construction process can only be completed by hoisting. The construction cost is high, the construction is difficult, dangerous, and economical. The construction method of using towing technology instead of hoisting technology can greatly improve construction efficiency and significantly reduce costs. Consequently, towable gravity-based forms of foundation have developed enormously in recent...

AI Technical Summary

Problems solved by technology

However, although the existing gravity-type foundation forms that can be towed can realize the towing capability, there are still many hidden dangers in the buoyancy stability during towing and sinking.

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