Anchored ribbed type connecting device for prestressed concrete and steel tower section of wind power combined tower

Abstract

The invention relates to an anchored ribbed type connecting device for prestressed concrete and a steel tower section of a wind power combined tower. The top end of an upper connecting steel cylinder section is connected with the upper steel tower section through a connecting mechanism. A lower connecting flange plate is installed between the upper connecting steel cylinder section and a lower connecting steel cylinder section. The upper connecting steel cylinder section and the lower connecting steel cylinder section are both located on a middle annular surface between the outer annular surface and the inner annular surface of the lower connecting flange plate. A horizontal annular plate is installed on the bottom surface of the lower connecting steel cylinder section. A prestress exerting component is further arranged in the lower connecting steel cylinder section and a lower concrete tower section. A plurality of radial stiffening plates are arranged on the inner side and the outer side of the lower connecting steel cylinder section. According to the an anchored ribbed type connecting device for prestressed concrete and the steel tower section of the wind power combined tower, due to the fact that prestress is exerted on the concrete, it is guaranteed that the concrete tower section is in the vertically pressed state, and the concrete is prevented from being cracked; in addition, due to the fact that the design of the connecting sections is improved, the connection performance between the connecting sections and the concrete is improved, and the width of cracks of the concrete tower section is effectively controlled.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a wind power composite tower anchor bolt ribbed prestressed concrete and steel tower section connection device. Background technique [0002] The wind power tower with composite structure of concrete and steel is a new type of wind power tower structure. This new type of tower structure can effectively solve the problems of difficult transportation and high cost of traditional steel towers, and improve the dynamic characteristics of the structure. It improves the durability of the structure and has a good application prospect. The upper part of the steel-concrete composite tower is a steel tower section, and the lower part is a concrete section. In this new composite tower type, the connection between the concrete tower section and the steel tower section is the key to ensure the safety of the structural system. The concrete tower section is cast-in-place, or partly prefabr...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of tensile stress, excessive local compression and cracking in the concrete at the top of the concrete tower when connecting the concrete tower section and the steel tower section in the prior art wind power generation tower, or the width of concrete cracks is difficult to meet the specification The problem required is to provide a wind power composite tower anchor bolt ribbed prestressed concrete and steel tower section connection device, which introduces prestress into the concrete to ensure that the concrete tower section is in a vertically compressed state, avoiding concrete cracking, and improving The connection performance between the connecting section and the concrete can effectively control the crack width of the concrete tower section, thereby improving the safety, durability and fatigue resistance of the composite tower structure

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