Circular-section concrete supporting structure of fabricated wind turbine generator

Abstract

The invention discloses a circular-section concrete supporting structure of a fabricated wind turbine generator. The circular-section concrete supporting structure comprises at least one structural unit, wherein each structural unit comprises a concrete tower section, tower section inner longitudinal steel bars, an upper flange plate, a lower flange plate, an upper prestressed steel strand, a lower prestressed steel strand and high-strength bolts; the tower section inner longitudinal steel bars, the upper flange plates and the lower flange plates are integrally cast to form an integral frame;concrete is poured between the upper flange plates and the lower flange plates and wraps the tower section inner longitudinal steel bars; a plurality of structural units are annularly connected through the upper prestressed steel strands and the lower prestressed steel strands in a pre-tensioning mode; and a plurality of structural units are vertically connected through the upper flange plates andthe lower flange plates by means of the high-strength bolts to form a conical whole. According to the circular-section concrete supporting structure, the integrity and installation of a concrete tower are effectively improved while the requirements for factory fragment prefabrication and on-site integral assembly are met.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a circular section concrete support structure of an assembled wind turbine. Background technique [0002] my country has become the world's largest carbon dioxide emitter since 2007, and the ever-increasing energy demand has conflicted with the severe task of energy conservation and emission reduction. my country has abundant onshore wind energy resources, and the development of wind power energy has become an important part of the national energy structure transformation strategy. In order to obtain stable power generation, wind turbines are erected high in the sky through support structures. In recent years, the unit capacity, hub height, and wind rotor diameter of wind power structures have been gradually increased. The traditional conical steel tower support structure is increasingly difficult to meet the trend of large-scale development of wind power structures due to its limi...

AI Technical Summary

Problems solved by technology

In order to reduce the transportation size and hoisting weight, the concrete tower usually needs to be prefabricated in pieces in the factory and assembled on site, but the resulting horizontal joints and vertical joints not only destroy the integrity of the structure, but also affect the construction. Quality and Construction Progress

For example, the wet connection of the joint filled with grouting material is often unable to be inspected visually because the construction quality is located inside the sealing strip, and the construction will be interrupted due to the difficulty in improving the strength during construction in winter

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