RCS (reinforced concrete structure) combined node with continuous webs and partially-cut flanges

Abstract

The invention discloses an RCS (reinforced concrete structure) combined node with continuous webs and partially-cut flanges, comprising a reinforced concrete column, and a steel beam which vertically penetrates through the reinforced concrete column, wherein the steel beam is formed by vertically connecting a steel beam web with steel beam flanges on the two end parts; the reinforced concrete column is composed of a longitudinal reinforcement, a plurality of layers of horizontally-distributed stirrups clinging to and surrounding the longitudinal reinforcement, and inter-column pouring concrete, the steel beam flanges which vertically penetrate through the reinforced concrete column are partially cut off, the stirrups penetrate through a node web which is connected with the steel beam web, and surface bearing plates are vertically distributed at the both ends of the node web; and a core node is composed of the longitudinal reinforcement in the reinforced concrete column, the stirrups surrounding the longitudinal reinforcement, the two surface bearing plates, the node web and steel beam flange extending ends of the partially-cut steel beam flanges. The steel web at the core node is mainly used for bearing a shearing force, the steel beam flange extending ends and the surface bearing plates are used for restraining concrete at the core node, so that the anti-shearing bearing force of the node is greatly improved.

Description

technical field [0001] The invention relates to a steel and concrete composite structure, in particular to a reinforced concrete column-steel beam composite node, that is, an RCS composite node with continuous webs and partially cut flanges. Background technique [0002] Reinforced concrete column-steel beam composite frame structure (composite frame consisting of Reinforced Concrete column and Steel beam, referred to as RCS) gives full play to the advantages of different materials of reinforced concrete and steel members, and is a low-cost and high-efficiency structural form. The reinforced concrete column-steel beam structure system is a kind of inheritance and development of pure steel structure and reinforced concrete structure, which has more excellent mechanical performance and economy. Generally speaking, compared with pure steel structures, reinforced concrete columns have better compressive performance, greater rigidity, durability and fire resistance, thereby savin...

AI Technical Summary

Problems solved by technology

Analysis of the reasons is mainly due to the fact that the current RCS composite joints either adopt the steel beam penetration method, that is, the steel beam continuously passes through the reinforced concrete column. Since the flange area of ​​the steel beam at this joint is relatively large, the longitudinal reinforcement in the column must be effectively transmitted. It is necessary to perforate the flange, which makes the construction difficult; moreover, the larger flange will also cause difficulties in pouring concrete, which will also affect the construction progress; or the column penetration method, that is, the longitudinal reinforcement of the reinforced concrete column penetrates through the node , the steel beams are connected on both sides of the joint by taking appropriate measures (welding or bolted connections). Since the steel beams of this joint are discontinuous, it is easy to cause sudden failure of the weld or sudden failure of the bolts, which are not ideal ductile failures.

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