Split prefabricated assembly type combined tower drum connecting joint and mounting method thereof

Abstract

The invention relates to a connecting joint, in particular to a split prefabricated assembly type combined tower drum connecting joint and a mounting method thereof. The split prefabricated assembly type combined tower drum connecting joint comprises an upper flange plate, a lower flange plate, prestressed steel bars, prestressed embedded parts and a shell, wherein the prestressed steel bars are formed by a plurality of reinforcing steel bars in a cage shape, the lower flange plate is arranged at the lower ends of the reinforcing steel bars, the upper flange plate is arranged at the upper endsof the reinforcing steel bars, the lower flange plate and the upper flange plate are both fixed to the shell, and the prestressed embedded parts penetrate through the shell. The problems of sudden rigidity change at the joint of a concrete tower drum section and a steel tower drum and local buckling of a connecting joint are perfected or avoided as much as possible, and meanwhile, the transportation cost can be reduced in a split mode, the construction difficulty is simplified, and the efficiency is improved.

Description

technical field [0001] The invention relates to a connection node, in particular to a segmented prefabricated combined tower tube connection node and an installation method thereof. Background technique [0002] In recent years, due to the strong support and development of the wind power industry by the state, wind power has developed by leaps and bounds, and the wind power tower is an important part of wind power equipment, which is related to the development and improvement of wind power technology. [0003] Generally speaking, as the height of the ground increases, the wind speed will become stronger and stronger, so the higher the wind turbine is installed, the higher the utilization rate of wind energy. However, with the large-scale and advanced development of wind turbines, the disadvantages of traditional steel towers such as difficulty in transportation and low economic efficiency are increasingly revealed. The combined wind power tower composed of prestressed prefa...

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Problems solved by technology

[0004] However, due to the obvious differences in the materials and mechanical properties of the concrete tower section and the steel tower section, in the traditional connection method, the steel tower section is prone to buckling at the connection node, while the concrete tower section is prone to buckling due to uneven force. Problems such as crack resistance and fatigue resistance cannot be guaranteed, which affect the mechanical properties and stability of the entire wind power tower

[0005] In the prior art, when the prestressed prefabricated concrete tower section and the steel tower section are connected through nodes during construction, due to the differences in materials, the mechanical properties are significantly different, and the stiffness is prone to sudden changes, which in turn easily causes the steel tower section to connect at the joint node. Partial buckling will affect the overall stability of the tower, which will easily cause secondary construction, reduce safety, and make it difficult to guarantee the quality of the project

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