Newly-added steel girder and original reinforced concrete column hoop connecting joint and connecting method thereof

Abstract

The invention relates to the technical field of reinforced concrete column modified connecting joints, and discloses a newly-added steel girder and original reinforced concrete column hoop connecting joint and a connecting method thereof. The connecting joint comprises an original reinforced concrete column, a newly-added steel girder and a connecting element of a connecting portion which is arranged on the original reinforced concrete column and connected with the newly-added steel girder. The connecting element comprises an inner hoop fixed to the periphery of the original reinforced concrete column, a steel reinforcement framework implanted into the connecting portion, an outer hoop fixed to the periphery of the steel reinforcement framework, and an intra-hoop concrete structure poured between the outer hoop and the side wall of the original reinforced concrete column. The upper and lower ends of the connecting portion are sleeved with the inner hoop. The inner hoop is a horizontally-arranged groined frame. The steel reinforcement framework is composed of longitudinally-arranged layered anchor bars. The inner side wall of the outer hoop, the outer ends of the anchor bars and the outer end of the inner hoop are welded and fixed. The newly-added steel girder and the side wall of the outer hoop are perpendicularly fixed. The connecting joint is simple in structure, wide in application range and capable of forming an overall core joint with an original structure.

Description

technical field [0001] The invention relates to the technical field of connection nodes for the reconstruction of reinforced concrete columns, in particular to a hoop connection node between a newly added steel beam and an original reinforced concrete column and a connection method thereof. Background technique [0002] With the development of the economy, old factory buildings need structural reinforcement and reconstruction due to the adjustment of building functions, while conventional renovation projects add structural steel beams or reinforced concrete beams. The connection between the newly added structural steel beam and the original concrete column is usually to use a single-sided post-embedded part on the concrete column or a penetrating bolt to connect the embedded part oppositely, and then weld the newly added steel beam through the embedded part, but there are certain problems. Defects, when the original concrete column has a large cross-section, it is difficult ...

AI Technical Summary

Problems solved by technology

[0005] The technical problems to be solved are: the construction of the existing reconstructed connection nodes is relatively restrictive, it is difficult to form fixed perforations, and the connection between the newly added beams and the original columns only depends on the force of the bolts, and cannot form an integral beam-column joint with the original columns. force, poor stability, and the connection part is often the weak link of earthquake resistance

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