Steel-concrete composite beam and concrete filled steel tubular column joint and construction method

Abstract

The invention discloses a steel-concrete composite beam and concrete filled steel tubular column joint and a construction method, relates to a composite joint and a joint construction method, and aims to solve the problems that when a U-shaped steel-concrete composite beam is connected with a T-shaped or L-shaped concrete filled steel tubular column in an existing frame joint, an outer side upper flange is turned outwards, and the use function is seriously influenced; and meanwhile, when the U-shaped steel-concrete composite beam is connected with the T-shaped or L-shaped concrete filled steel tubular column, the end of a longitudinal stressed steel bar in a reinforced concrete floor is directly welded to the concrete filled steel tubular column, a steel tube has relatively large residual stress, the plasticity is reduced, when the stress is relatively large, the steel bar transmits force to a welding seam, the concrete filled steel tubular column is torn and damaged at the welding position, and the huge potential safety hazard is brought. The concrete filled steel tubular column is vertically arranged, one end of the steel-concrete composite beam and one end of a reinforced concrete plate are both fixed to the outer side wall of the concrete filled steel tubular column, and two connecting end plates are installed on the steel-concrete composite beam and the concrete filled steel tubular column. The invention belongs to the field of building structures.

Description

technical field [0001] The invention relates to a combined node and a node construction method, in particular to a steel-concrete composite beam and steel tube concrete column node and a construction method. Background technique [0002] U-shaped steel-concrete composite beam has the advantages of high bearing capacity, high rigidity, good seismic performance, small cross-sectional size, fast construction speed, good fire resistance, smooth wall surface after construction, and good construction effect. It is often used with concrete filled steel pipe columns. Compatible with reinforced concrete floors. However, when the U-shaped composite beam is connected with the T-shaped or L-shaped concrete-filled steel pipe column, the outer upper flange eversion will seriously affect the use function, and will affect the external wall insulation and decoration construction. [0003] The negative bending moment at the frame joint is relatively large. When U-shaped steel-concrete compos...

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Problems solved by technology

[0004] The present invention aims to solve the problem that when the U-shaped steel-concrete composite beam is connected with the T-shaped or L-shaped steel pipe concrete column in the existing frame joints, the outer upper flange will seriously affect the use function; while the U-shaped steel-concrete composite beam and the T-shaped Or when the L-shaped steel tube concrete column is connected, the end of the longitudinally stressed steel bar in the reinforced concrete floor slab is directly welded to the steel tube concrete column. There is a large residual stress in the steel tube, and the plasticity is reduced. When the force is large, the steel bar transmits force to the weld. , the steel-concrete composite beam and steel-concrete column joints and construction method are provided by the tearing failure of the steel-filled steel pipe column at the weld, which brings about a huge potential safety hazard.

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