Fabricated concrete column-column connecting joint

Abstract

The invention discloses a fabricated concrete column-column connecting joint which is simple in structure, easy and convenient to construct and low in manufacturing cost. Connecting components are easy to replace, the overlapped work of reinforcing steel bars at the joint region is simplified, dry-type connection is adopted in the whole installing process, the post-casting operation of the joint region is greatly lowered, no special tool is needed, and the construction speed is increased; force transmission is clear and reliable, and when the low-intensity earthquake effect is met, the structure is kept complete; when the high-intensity earthquake effect is met, low-yield steel plates at the peripheral side walls absorb energy at first to achieve yield, fixing nuts resist vertical shear force and horizontal tension, and the energy dissipation effect is achieved in the whole process; then, connecting components at the four corners of a concrete column achieve the yield gradually, and adjusting nuts at the two sides of connecting components resist vertical tension; energy is dissipated in sequence from exterior to interior, and the stress performance of the fabricated concrete column-column connecting joint structure under different-intensity earthquake effects and rapid restoring performance of the structure obtained after an earthquake are ensured.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to an assembled concrete column connection node. Background technique [0002] In recent years, in order to promote the transformation and upgrading of the construction industry, the construction industry is vigorously developing prefabricated buildings. As one of the most common structural systems, prefabricated concrete frame structures are widely used in public buildings such as shopping malls, garages, and office buildings. The mechanical performance of prefabricated frame beam-column joints plays an important role in the overall performance of the structure, and the connection technology of prefabricated components is attracting more attention from technicians. [0003] At present, the precast concrete frame column-column connection joint technologies mainly include end-plate bolt connection, steel bar connection sleeve grouting connection, and post-casting aft...

AI Technical Summary

Problems solved by technology

The bolt connection of the end plate realizes the connection of precast columns by pre-embedding steel plates at the ends of the upper and lower prefabricated columns, covering the outside with steel plates, filling the middle with concrete, and fixing the external steel plates with bolts. The disadvantages are: large amount of steel used and complicated construction

Rebar connection sleeve grouting connection is a technology that connects the longitudinal reinforcement of the upper and lower prefabricated columns by connecting the rebar connection sleeve. Its disadvantages are: high cost and difficult detection of grouting quality

On-site formwork post-casting is a method of completing the connection of prefabricated columns by setting up formwork in the core area of ​​the node, and then carrying out concrete post-casting construction. In the column joint area, the reinforcement arrangement is complicated, which is not convenient for construction

Images