Fabricated building primary and secondary beam steel connection joint structure

Abstract

The invention relates to the technical field of building construction, and provides a fabricated building primary and secondary beam steel connection joint structure, wherein the fabricated building primary and secondary joist steel connection joint structure is free of supports, free of wet construction, high in strength, high in rigidity, stable, rapid and easy to mount and capable of saving thetime and labor. According to the adopted technical scheme, the fabricated building primary and secondary beam steel connection joint structure comprises pre-buried brackets arranged on the side partof a prefabricated primary beam and pre-buried tenon plates which are arranged on the side face of the end of a prefabricated secondary beam; the pre-buried brackets each comprise a wing plate frame and two hanging plates which are perpendicular to the wing plate frame, wherein the bottoms of the two hanging plates are integrally connected by arranging a bottom plate; the wing plate frames are pre-buried in the prefabricated primary beam, and a plurality of bolts are vertically arranged on the pre-buried tenon plates; and the two ends of the bolts both penetrate out of the prefabricated secondary beam, and bayonets corresponding to and being matched with the ends of the bolts are arranged on the handing plates.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an assembly type building primary and secondary beam steel connection node structure. Background technique [0002] The primary and secondary beam connection nodes are an important part of the prefabricated building structure, and the stability and reliability of the connection nodes are the key to structural design and construction. At present, the primary and secondary beams of prefabricated buildings are mostly connected by steel sleeves and pre-embedded steel plate bolts. For example, Chinese patent CN 108999297 A discloses a new type of assembled main and secondary beam connection node and its connection method. The disclosed connection method is mainly to set two beam grooves on both sides of the top of the main beam lapped secondary beam, and the secondary beam ( The top surface of the lap joint with the main beam) is provided with installation grooves. The ...

AI Technical Summary

Problems solved by technology

However, at present, the construction methods of post-casting and shelving are mostly used for the connection nodes of primary and secondary beams. On the one hand, a large number of supports and formworks need to be erected. When the space is small, the erection of supports and the installation of formwork are limited; on the other hand, the post-casting method is used for construction. Sometimes there are weak positions in the components, there are quality problems of breakage and cracks, and the convenience of prefabricated construction is weakened

When the shelving construction method is adopted, the local section of the component is weakened greatly, which affects the shear force at the end

In addition, the patent No. CN2015206587423 discloses a connection node of primary and secondary beams. The main technical solution is to design an L-shaped bottom plate to connect the main On structural beams, not concrete beams; in addition, the patent No. CN2017204900573 discloses an assembled primary and secondary beam connection node structure, and its main technical solution is: prefabricated corbels located on the side of the beam body of the prefabricated main beam , set in the assembly groove at the end of the prefabricated secondary beam, the prefabricated corbel includes a web plate, the corbel assembly hole is opened on the web plate, and the secondary beam assembly hole is opened on the prefabricated secondary beam, the corbel assembly hole and the The assembly holes of the secondary beams are set in alignment and connected by connectors (bolts); the joint structure of the primary and secondary beams in this technical scheme is to set aside pre-embedded T steel plates and connect with bolts and anchors. This mode of joints has low shear resistance; concrete bolt holes The aperture needs to be larger, otherwise it will not fit the steel plate hole, and the large aperture means that the installation error deviation is large; the secondary beam is supported by the web, and after the secondary beam is placed, the alignment error between the secondary beam assembly hole and the corbel assembly hole is high

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