Prefabricated assembly type main beam and subsidiary beam mounting structure and mounting method

Abstract

The invention discloses a prefabricated assembly type main beam and subsidiary beam mounting structure and a mounting method. The mounting structure comprises a prefabricated bracket arranged on the side of a prefabricated main beam, and an assembly groove formed in the end of a prefabricated subsidiary beam. The prefabricated bracket comprises a flange for storing the bottom of the prefabricated subsidiary beam, and a web inserted into the assembly groove. According to the assembly type main beam and subsidiary beam mounting structure, a post-poured section does not need to be arranged, wet operation on site is reduced, excessive connecting steel bars do not need to be arranged, the structure is simple, and force transmission is definite; and site welding is not needed, the labor cost is low, construction is rapid, and the construction period can be obviously shortened.

Description

technical field [0001] The invention relates to the field of building structure engineering, in particular to a prefabricated primary and secondary beam installation structure and installation method. Background technique [0002] At present, there are three common forms of connection between primary and secondary beam nodes in prefabricated structures. [0003] The first form is: the post-casting section is set at the main beam, that is, a transverse groove is set at the joint of the main beam, and the end of the secondary beam is set up at the groove, and the primary and secondary beams are realized by pouring concrete in the groove area of ​​the main beam Beam connection, the construction speed of this kind of joint is fast, but the local weakness of the component is caused by the groove of the prefabricated main beam, which makes the prefabricated main beam prone to breakage, cracks and other quality problems during hoisting or transportation. [0004] The second form i...

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Problems solved by technology

[0003] The first form is: the post-casting section is set at the main beam, that is, a transverse groove is set at the joint of the main beam, and the end of the secondary beam is set up at the groove, and the primary and secondary beams are realized by pouring concrete in the groove area of ​​the main beam The connection of beams, the construction speed of this kind of joint is fast, but the local weakness of the component is caused by the groove of the prefabricated main beam, which makes the prefabricated main beam prone to breakage, cracks and other quality problems during hoisting or transportation

[0004] The second form is: the post-casting section is set at the secondary beam, that is, a section of cast-in-place section is reserved at the end of the prefabricated secondary beam, and the cast-in-place section is poured after it is connected with the bottom longitudinal reinforcement reserved on the side of the main beam Realize the connection with the main beam. This kind of joint ensures the integrity of the prefabricated main beam, but it needs to support the bottom form at the cast-in-place section of the secondary beam, which weakens the convenience of prefabricated construction, even if there is a groove at the end of the secondary beam It will also increase the risk of breakage during transportation or hoisting

[0005] The third form is: shelving type, that is, the end of the secondary beam is directly placed on the corbel or lug on the side of the main beam. This method is the most convenient, but the problem is that setting the corbel affects the headroom or appearance; setting For dark corbels, the end of the secondary beam needs to be designed as a notched beam, and the local section is weakened greatly, which affects the shear bearing capacity of the end of the secondary beam

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