Conical pipe anchor bar connection structure for prefabricated assembly structure

Abstract

The invention discloses a conical pipe anchor bar connection structure for a prefabricated assembly structure, and belongs to the field of prefabricated assembly engineering. The connection structurecomprises a conical pipe, a grouting guide pipe and a fixing circular ring. The conical pipe is of a pre-embedded structure, the conical pipe can achieve a restraint effect on steel bars and groutingmaterials in the conical pipe, and meanwhile the tension capacity of the conical pipe in concrete can be improved. Frame vertical ribs and tie bars in a prefabricated bearing table also achieve a restraint effect on cracking of the bearing table or foundation concrete caused during pulling of the conical pipe. In prefabricated components, a conical pipe group is connected with the surrounding frame vertical ribs and the tie bars, and therefore the anchor performance of the conical pipe group can be improved. The steel bar anchorage length needed by the conical pipe anchor bar connection structure is small, the conical pipe anchor bar connection structure can be used for connection between a reinforced concrete structure prefabricated assembly component and a foundation or the bearing table, and rapid building of the prefabricated assembly reinforced concrete is achieved.

Description

Technical field [0001] The invention relates to a connection structure for prefabricated and assembled concrete components, in particular to a conical pipe anchoring steel bar connection structure, and belongs to the technical field of prefabricated concrete. Background technique [0002] The feasibility of prefabricated concrete structures depends on the reliability of the connection structure of prefabricated components. Among them, the reinforced grout anchor connection is a prefabricated component connection method with good bonding performance, simple construction technology and low cost. Grouting corrugated pipe connection and grouting sleeve connection are generally used in the connection of anchored steel bars of prefabricated structure. Grouting corrugated pipe connection is a kind of steel anchor connection method that is more mature and widely used in prefabricated concrete structures. The connection structure is to embed the corrugated pipe at the corresponding posi...

AI Technical Summary

Problems solved by technology

However, there are still some shortcomings in this anchoring reinforcement connection method: (1) In order to ensure that the reinforcement has sufficient anchoring performance, a large anchorage length of the reinforcement is required; (3) Generally, the strength of the grouting material is high, and the bonding strength between the steel bar, the grouting material wave, and the bellows is high, but when the prefabricated structural column or pier is bent and damaged, the concrete around the outside of the bellows may be broken and the bellows will be pulled out destroy

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