Reinforced structure of square steel columns

Abstract

The invention discloses a reinforcement structure of a square steel column, which comprises a horizontally arranged beam-column connection part (1), a vertically arranged square steel column (2), and the square steel column (2) connects with the beam through the column end (2.1) The column connecting parts (1) offset each other to bear the overall weight of the beam and column, and the column ends (2.1) are provided with openings (2.2) for reducing the bending and shearing capacity of the column ends (2.1), and the reinforcement structure also includes For the reinforcing plate (3) covering the opening (2.2), the reinforcing plate (3) is connected to the end of the column (2.1) through bolts (4), and the reinforcing plate (3) includes a body that is tightly attached to the square steel column (2) (3.1), a plurality of ribs (3.2) protruding from the body (3.1) and arranged laterally. The invention provides a square steel column reinforcement structure that does not need to reinforce the whole of the square steel column, but only needs to partially reinforce the end of the column to obtain an ideal anti-buckling effect and improve the overall wind resistance and earthquake resistance of the steel structure.

Description

technical field [0001] The invention relates to the technical field of building steel structures, in particular to a reinforced structure of square steel columns. Background technique [0002] The columns of the general steel frame structure mostly use square steel columns to support the transverse beams and columns. The overall stability of square steel pipes is relatively strong, but the local stability is relatively weak, especially at the end of the column that offsets the square steel columns. When the horizontal force brought by strong wind or earthquake force acts on the steel frame, the end of the square steel column that is offset against the beam-column connection will generate huge bending moment and shear force, and the end of the square steel column with weak local stability Local buckling damage is prone to occur at the upper part, leading to the collapse of the structure. However, the buckling-resistant reinforcement of the column ends in the general method ca...

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Problems solved by technology

[0002] The columns of the general steel frame structure mostly use square steel columns to support the transverse beams and columns. The overall stability of square steel pipes is relatively strong, but the local stability is relatively weak, especially at the end of the column that offsets the square steel columns. When the horizontal force brought by strong wind or earthquake force acts on the steel frame, the end of the square steel column that is offset against the beam-column connection will generate huge bending moment and shear force, and the end of the square steel column with weak local stability Local buckling damage is prone to occur at the upper part, leading to the collapse of the structure. However, the buckling-resistant reinforcement of the column ends in the general method can increase the bending and shear bearing capacity of the column ends in the reinforced area and is not easy to be damaged. Buckling failure will still occur in the area with a large bending moment in the reinforcement zone, that is, the buckling failure zone moves inward. Therefore, the general local buckling-proof reinforcement method does not achieve good results, and it is necessary to carry out the entire column or basically the entire column. Reinforcement can completely eliminate the buckling damage zone to obtain the ideal anti-buckling effect, but the disadvantage of this method is that it is uneconomical and the weight of the structure is greatly increased

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