Connecting sleeve, prefabricated part comprising same as well as production method and connecting method thereof

Abstract

The invention provides a connecting sleeve used for a prefabricated part, the prefabricated part comprising the connecting sleeve as well as a production method and a connecting method of the prefabricated part. The connecting sleeve (1) is provided with a hole (10) along the axial direction; the outer wall of the connecting sleeve (1) is provided with external thread, or at least part of the hole (10) is provided with internal thread (101); the hole (10) also comprises a section of taper hole (102) with a cone shape, or is provided with a blocking table (105) arranged along the inner wall of the hole (10); the side wall of the connecting sleeve (1) is also provided with an open slot (11) extending into the hole (10); the open slot (11) passes through the lower end of the connecting sleeve (1) downwards. The connecting sleeve can greatly reduce the production cost of a precast pile, lightens the labor intensity of workers, increases the production efficiency and improves the product quality.

Description

technical field [0001] The present invention relates to the field of prestressed concrete prefabricated components such as pipe piles and square piles, and in particular to a component for prestressing and tensioning prestressed steel bars in the above prestressed concrete components and a production method for the concrete components. Background technique [0002] Due to its high bearing capacity, good stability, small settlement, and ease of mechanized construction, pile foundation has become a widely used foundation type in industrial and civil buildings, transportation, railways, civil aviation, water conservancy, ports and other projects. Among them, concrete pipe piles and square piles, as the main pile types, have been more and more widely used due to their high bearing capacity, strong ability to adapt to strata, factory production, and obvious economic and environmental benefits. Vigorous emerging industries. [0003] At present, the domestic concrete prefabricated...

AI Technical Summary

Problems solved by technology

[0011] However, no matter in the field of pipe piles or square piles, when using end plates and pile collars, the process of end plates and pile collars is complicated and difficult to operate in the production of prefabricated components, so there are the following main problems: First: The processing procedure is complicated and the cost is high, accounting for a large proportion of the cost of prefabricated components; Second: The processing accuracy and assembly accuracy of the end plate are high, the end plate is installed inclined, and the end plate point contact between the prefabricated piles during construction , increasing the difficulty of construction, and even the pile head is easily broken; third: the end plate is relatively heavy, the labor intensity is high when connecting with the steel cage, and the production efficiency is low; fourth: the gap between the end plate at the pile head and the end plate There is a large difference in welding quality, and there are certain safety hazards

However, in terms of improving production efficiency and saving costs by improving the structure of end plates and tension components, the prior art has not yet provided a better solution

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