The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam

Abstract

The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam belong to the technical fields of architectural structure. The nodes consist of the concrete filled steel tubular column (1) and in-situ reinforced concrete beam (2); the characteristics are: that the beam longitudinal reinforcement (3) connects the concrete filled steel tubular column (1) through feedthrough rod (4), the steel sleeve tube (6) sets on both ends of the feedthrough rod (4) and connects the beam longitudinal reinforcement (3) through threaded connection, and the beam node areas is densely covered with stirrups (5) with the spacing of 50-80mm. As for the side-column node, one end of the feedthrough rod (4) is welded on the ring plate (7). The invention does not require on-site welding process to address the connection issue of the reinforced concrete and the concrete filled steel tube. With simple construction, it can be widely used for the building structure field and has broad application prospects.

Description

Concrete Steel Tube Column and Cast-in-situ Reinforced Concrete Beam Joint and Its Construction Method technical field The invention relates to a joint construction method of a steel pipe concrete column and a cast-in-place reinforced concrete beam, which belongs to the technical field of building structures. Background technique Concrete-filled steel tube columns have been used in civil engineering for more than 80 years. my country has been studying the performance and application of steel-filled steel tube concrete columns since 1959. Steel tube concrete columns have the characteristics of high strength, superior performance, and easy construction, which can make traditional rods The advantages of the component structure system are further developed, especially in high-rise, long-span, heavy-load and earthquake-resistant buildings, which can better meet a series of requirements for design and construction. Currently, it is widely used in high-rise and super high-rise buil...

AI Technical Summary

Problems solved by technology

Due to the complex connection between CFST columns and beams, the unclear force transmission path, and the difficulty in construction, there is still no complete set of node design and construction theory in our country, and the existing node connection methods between CFST columns and reinforced concrete beams are relatively complicated. , more on-site welding processes

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