Steel-concrete composite structure switching section for wind power tower

Abstract

The steel-concrete composite structure switching section comprises an outer steel shell and an inner steel shell, the outer steel shell and the inner steel shell are connected through a plurality of rib plates, the two ends of the outer steel shell and the two ends of the inner steel shell are connected through sealing plates, and a cavity is formed between the outer steel shell and the inner steel shell. According to the steel-concrete composite structure switching section for the wind power tower, the steel structure has a hooping effect on the internal concrete, so that the ultimate strength of the concrete is improved, the concrete has a supporting effect on the external steel structure, bending and stretching of steel are avoided, the stress performance is improved, dense structural reinforcing bars are omitted, and the construction cost is reduced. The pouring process is more convenient, and the concrete pouring quality is easier to guarantee.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a steel-concrete composite structure transition section for a wind power tower. Background technique [0002] The steel-concrete tower of the wind turbine needs to use a transition section to transition the concrete section and the steel section. The transition section needs to bear the external load of the upper steel tower and the prestress of the concrete section at the same time, and the stress state is extremely complex. In order to meet the bearing capacity requirements of the transition section, the transition section of the general reinforced concrete structure needs larger structural reinforcement. Because the reinforcement is too dense, the binding and construction are difficult. Quality problems such as strength weakening. In addition, the transfer section of the general reinforced concrete structure is connected by long anchor bolt components (anchor bolts and anc...

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Problems solved by technology

In order to meet the load-bearing capacity requirements of the transfer section, the transfer section of the general reinforced concrete structure requires relatively large structural reinforcement. Because the reinforcement is too dense, it is difficult to bind and construct. At the same time, it is not conducive to the flow of concrete during pouring, which is likely to cause local Quality problems such as strength weakening

In addition, the transition section of the general reinforced concrete structure is connected with the steel tower by long anchor bolt components (anchor bolts and anchor plates pre-embedded in the transition section). Due to the poor positioning accuracy of the high-strength anchor bolt holes, the anchor bolt connection construction is difficult. , The concrete at the bottom of the anchor plate is easy to form a cavity, which requires secondary grouting, and the process is cumbersome

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