Novel prefabricated frame structure beam column dry type connecting joint

Abstract

The invention discloses a novel prefabricated frame structure beam column dry type connecting joint, and belongs to the technical field of house building. The novel prefabricated frame structure beam column dry type connecting joint comprises a prefabricated concrete beam, a prefabricated concrete lower column, a prefabricated concrete upper column, a connecting end head and a bracket, wherein the lower part of the connecting end head is provided with a reserved vertical steel bar; a bracket reserved hole is formed inside the bracket; a longitudinal bar reserved hole is formed inside the prefabricated concrete lower column; the connecting end head and the bracket are connected through inserting the reserved vertical steel bar into the bracket reserved hole; the lower end of the prefabricated concrete upper column is provided with a reserved longitudinal bar; and the prefabricated concrete upper column and the prefabricated concrete lower column are connected through inserting the prefabricated longitudinal bar into the longitudinal bar reserved hole. The novel prefabricated frame structure beam column dry type connecting joint has the advantages that the beam is hoisted, so that the beam end is put on the bracket to be limited; the beam is prevented from downwards sliding in the column height direction; the assembly is convenient; the reserved vertical steel bar is inserted into the limiting hole of the bracket and is subjected to grouting; the primary fixation is realized; the integrality and the rigidity of the joint can meet the requirements; the installation is convenient; and the fixing effect is good.

Description

technical field [0001] The invention belongs to the technical field of house construction, and in particular relates to a novel prefabricated frame structure beam-column dry connection node. Background technique [0002] In order to meet the seismic performance requirements of the prefabricated concrete frame structure system, the strength and reliability of the connection between prefabricated columns and prefabricated beams are solved through relevant structural measures. The currently recognized known connection structure includes grooves at the end of the beam, U-shaped bending treatment for the prestressed steel strands at the bottom of the beams, and prestressing of the steel strands by reserving channels for the steel strands in the grooves and node areas. Connection node; or the end of the beam is provided with a stepped corbel, and a certain length of ordinary steel bars with hooks protruding from the bottom of the beam extends into the beam-column node area, and th...

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Problems solved by technology

[0003] In the above-mentioned known connection structure, a groove is provided at the end of the beam, and the steel strand in the groove is treated as a hook, and a U-shaped channel is provided to apply prestress by passing the steel strand inside. It is very difficult to pass through the prestressed tendon in the U-shaped channel, and the force transmission performance between the U-shaped channel and the steel strand is poor, resulting in low ductility of the joint; The common steel bars with hooks extend into the joint area of ​​the beam and column. When the steel bars at the bottom of the beam extend into the joint area in different directions, the collision of the steel bars at the bottom of the beam often occurs, which makes the construction inconvenient. , the assembly points connected by bolts between the beam-column steel components require high alignment accuracy, which is uneconomical, and because the joints are made of steel, they are easy to rust, and the later maintenance costs are relatively high

[0004] In the Chinese Invention Patent Application Publication CN209066597U, a prefabricated concrete frame beam-column connection node structure is disclosed. Although the prefabricated concrete frame beam-column connection node structure makes full use of the prefabrication convenience of the assembled structural components, the column From the gap in the beam, pass through the limit plate and the fixed steel bar to insert the support block to get preliminary fixation, and then place the locking mechanism in the first slot and the second slot to connect the beam and column. However, combined with engineering practice, the column The width is generally greater than the width of the beam, so it is impossible for the column to pass through the gap of the beam, and the joint is relatively weak. This connection does not meet the requirements of strong joints and weak members, and cannot be realized in specific construction.

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