Fabricated RC column connecting joint based on steel hoop plate-steel tooth groove connecting piece

Abstract

The invention discloses a fabricated RC column connecting joint based on a steel hoop plate-steel tooth groove connecting piece. The fabricated RC column connecting joint comprises an upper concrete column and a lower concrete column, and the upper concrete column and the lower concrete column are connected in a matched mode through a cross-shaped connecting steel plate and a steel plate connecting hoop; and during assembly, the cross-shaped connecting steel plate is inserted into a connecting lug plate of the steel plate connecting hoop and a second cross-shaped groove of the lower concrete column and connected and fixed through bolts, the lower portion of the cross-shaped connecting steel plate is matched with the steel plate connecting hoop and the second cross-shaped groove, a vertical gap of 1-3 mm is reserved at the connecting position, and the vertical compression bearing capacity of the concrete columns is transmitted through the column ends of the upper concrete column and the lower concrete column. The force transmission section is the same as the effective section area of the column, stirrups are replaced by the cross-shaped connecting steel plate and the steel plate connecting hoop at the column ends, the constraint effect is enhanced, and the bearing capacity is basically equivalent to that of a cast column; and the cross-shaped connecting steel plate is inserted into the cross-shaped groove, out-of-plane yield is avoided, the shear bearing capacity of the joint is guaranteed, and effective transmission of axial force is guaranteed through welding of the joint connecting piece and longitudinal bars in the upper concrete column and the lower concrete column.

Description

technical field [0001] The invention belongs to the technical field of assembled frame structure components, and in particular relates to an assembled RC column connection node based on a steel hoop plate-steel tooth groove connector. Background technique [0002] The focus and difficulty of research in the field of prefabricated buildings has always been focused on the joints of prefabricated structures, including their strength and stiffness, which are difficult to completely equate with cast-in-place structures. The existing prefabricated vertical connection nodes are mainly column-column nodes, and the node connection methods used mainly include: grouting sleeve connection, bolt connection, welding connection, and other connections. [0003] The grouting sleeve connection requires on-site wet work, which reduces the assembly rate and is inconvenient to operate. Since the wet work requires a certain hardening time, the efficiency of the assembly connection is low, and the...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide an assembled RC column connection node based on steel hoop plate-steel groove connectors, which can solve the problem of low assembly rate of existing assembled column connections , improve the standardized construction level, clarify the stress path, and improve the shear bearing capacity of the prefabricated column connection; it has high node stiffness, good force transmission effect, no weakening of vertical compression bearing capacity, strong shear bearing capacity, convenient construction, and assembly Efficient advantages

Images