Fabricated beam-column connecting joint and construction method thereof

Abstract

The invention relates to a fabricated beam-column connecting joint and a construction method. The connecting joint comprises a prefabricated beam and a prefabricated column, wherein a joint core area is formed at the joint of the prefabricated beam and the prefabricated column, column longitudinal bars are arranged on the prefabricated column, the column longitudinal bars of the adjacent prefabricated columns are in lap joint in the joint core area, the prefabricated column is arranged in the joint core area, and a high-strength material is poured in the joint core area to form a post-pouring core area. Compared with the prior art, the connecting joint has the advantages of direct and reliable force transmission, convenience in construction and the like.

Description

technical field [0001] The invention belongs to the technical field of prefabricated buildings, and specifically relates to a prefabricated beam-column connection node and a construction method thereof. Background technique [0002] At present, prefabricated concrete frame structures are widely used in the field of building structures, and the technology and regulations are relatively mature. Existing prefabricated buildings have also made great progress after years of development. [0003] Nodes bear and transmit various complex loads such as axial force, shear force, and bending moment from beams and columns, and are the key elements to ensure structural safety. According to the requirements of the code, the prefabricated beam bottom reinforcement of the mid-span mid-span node of the prefabricated concrete frame structure must meet the larger value of LabE and hc / 2+5d, resulting in excessive reinforcement density in the core area of ​​the node, which is likely to cause the...

AI Technical Summary

Problems solved by technology

According to the requirements of the code, the bottom reinforcement of the prefabricated beam at the mid-span node of the prefabricated concrete frame structure must meet the larger value of LabE and hc / 2+5d, resulting in excessive reinforcement density in the core area of ​​the node, which is likely to cause the problem of reinforcement collision in the core area

The current mainstream connection forms of vertical components are sleeve grouting connection and grout-anchor lap connection. The construction of these two connection methods is cumbersome, and the lack of accurate detection methods greatly limits the construction efficiency of prefabricated buildings.

[0004] It can be seen that the conventional prefabricated joint connection has the disadvantages of too long reserved steel bars, high technical requirements, and complicated construction technology, especially in beam-column joints with high steel density.

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