Reinforced key groove connection joint beam-column structure

Abstract

The invention discloses a reinforced key groove connection joint beam-column structure, and belongs to the technical field of structural engineering. The structure comprises frame beams, frame columns, tie bars, additional tie bars and a separation net. The frame beams comprise pre-poured precast beams, the frame columns comprise pre-poured precast columns, key grooves are formed in the connectingpositions of the precast beams of the frame beams and the frame columns, and the key groove sare trapezoidal; the tie bars and the additional tie bars are arranged along the key grooves and the precast beams, concrete is poured into the key grooves, and the precast beams, the frame columns and the key grooves are connected into a whole; the surfaces of the key grooves are rough, so that the contact area and the bonding performance of the post-poured concrete and the precast concrete are further increased, and the stability of a joint is guaranteed; and considering the stability and economic cost of the joint, a precast part is made of common concrete, ECC concrete with high ductility, high ultimate compressive strain and other properties is poured into the key grooves, and the separationnet is laid along the key grooves, so that the common concrete and the ECC concrete are separated, and the stability of the key groove joint is guaranteed.

Description

technical field [0001] The invention relates to the technical field of structural engineering, in particular to a beam-column structure with reinforced keyway connection nodes. Background technique [0002] The progressive collapse of a structure refers to a process in which a series of collapses of adjacent structures that are not commensurate with the initial damage occur after some key components of the structure fail due to external forces. The continuous collapse of structures will not only cause casualties and property losses, but also have obvious adverse effects on society, psychology and economy. [0003] In recent years, my country has vigorously promoted the industrialization of housing and construction, and prefabricated structures have gradually come into people's sight due to the advantages of less on-site wet operations and short construction periods. However, it is difficult for prefabricated structures to fully realize the "equivalent to cast-in-place" coll...

AI Technical Summary

Problems solved by technology

This application can realize simple and fast on-site connection between prefabricated columns and composite beams, but the prefabricated beams are mainly fixed to one side of the prefabricated columns by bolts, which requires high quality bolts, and the bolts bear large gravity, so it is easy to install Cracks or even fractures on the connecting surface

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