Prefabricated column connecting structure

Abstract

A prefabricated column connecting structure comprises an upper prefabricated column, a lower prefabricated column and a beam-column cast-in-situ connecting joint, wherein the upper end and the lower end of the beam-column cast-in-situ connecting joint are connected with the bottom face of the upper prefabricated column and the top face of the lower prefabricated column correspondingly. An upper prefabricated column connecting steel bar and a steel bar connecting box are pre-embedded in the upper prefabricated column. The bottom end of the upper prefabricated column connecting steel bar is connected and fixed to the steel bar connecting box. A lower prefabricated column connecting steel bar is pre-embedded in the lower prefabricated column. After the upper portion of the lower prefabricated column connecting steel bar stretches out from the top face of the lower prefabricated column to penetrate through the beam-column cast-in-situ connecting joint, the top end of the lower prefabricated column connecting steel bar is fixedly connected with the steel bar connecting box pre-embedded in the upper prefabricated column. The prefabricated columns are prefabricated in a factory, produced in a standardized mode, controllable in quality, free of environment pollution and high in production speed, the upper and lower prefabricated column connecting steel bars are connected easily in a butting mode, the construction efficiency is high, and structural strength is good.

Description

technical field [0001] The invention belongs to the technical field of fixed buildings, and in particular relates to a prefabricated column connection structure. Background technique [0002] The existing building columns and their upper and lower building connection structures are all cast-in-place structures. The upper building columns are pre-embedded with downwardly protruding vertical steel bars, and the lower building columns are pre-embedded with upwardly protruding vertical steel bars. When connecting the upper and lower building columns, the downwardly protruding vertical steel bars embedded in the upper prefabricated column and the upwardly protruding vertical steel bars embedded in the lower prefabricated column are connected through sleeves as steel bar connectors. Sleeves, such as mechanical sleeves and grouting sleeves, are connected with these sleeves. It is difficult for the steel bars protruding from the ends of the upper and lower prefabricated columns to a...

AI Technical Summary

Problems solved by technology

[0002] The existing building columns and their upper and lower building connection structures are all cast-in-place structures. The upper building columns are pre-embedded with downwardly protruding vertical steel bars, and the lower building columns are pre-embedded with upwardly protruding vertical steel bars. When connecting the upper and lower building columns, the downwardly protruding vertical steel bars embedded in the upper prefabricated column and the upwardly protruding vertical steel bars embedded in the lower prefabricated column are connected through sleeves as steel bar connectors. Sleeves, such as mechanical sleeves and grouting sleeves, are connected with these sleeves. It is difficult for the steel bars protruding from the ends of the upper and lower prefabricated columns to align with the sleeves. If the steel bars deviate slightly or the sleeves deviate slightly, the steel bars cannot enter The inner connection of the sleeve is fixed, the construction is difficult and the efficiency is low; for the grouting sleeve, the raw material requirements of the slurry are high, the cost is expensive, the proportion is difficult to grasp, and the grouting is difficult to be fully in place, often leaving space, and the poured The slurry is prone to aging and crushing after a long time, resulting in loose steel bars, reduced structural strength, and affecting the quality of the building. For mechanical sleeves, internal thread threads are often processed on the inner sides of both ends of the mechanical sleeve, and vertical screws protruding from the ends of building columns. There are external threaded threads processed to the end of the steel bar. If the vertical steel bar or the mechanical sleeve protruding from the end of the building column deviates slightly, the external threaded threaded thread at the end of the vertical steel bar cannot be connected with the internal threaded thread of the mechanical sleeve. During the construction process, the deviation of the vertical steel bars protruding from the end of the building column and the mechanical sleeve is almost unavoidable, which has become a long-term unsolved technical problem in construction engineering

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