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Enlargement type staying cross rib square/rectangle steel tube concrete column

A technology for rectangular steel pipes and concrete columns, applied in the direction of columns, pillars, pier columns, etc., can solve the problems of pipe wall buckling deformation and limited improvement of the overall restraint effect, and achieve the effect of increasing the buckling deformation resistance

Inactive Publication Date: 2008-01-16
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the restraint rod is only connected to the pipe wall at a point, it can only play a local point restraint effect, and the improvement of the overall restraint effect is limited, and the pipe wall outside the restraint point will still produce buckling deformation

Method used

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  • Enlargement type staying cross rib square/rectangle steel tube concrete column
  • Enlargement type staying cross rib square/rectangle steel tube concrete column
  • Enlargement type staying cross rib square/rectangle steel tube concrete column

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Experimental program
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Embodiment Construction

[0016] As can be seen from the longitudinal sectional view shown in Fig. 1, the basic structure of the present invention is that several stiffening transverse ribs 2 are arranged in the square steel pipe 1 between the building layers, and the center of each stiffening transverse rib 2 is provided with a concrete pouring hole 3, and the concrete The vertical plate 4 parallel to the pipe wall of the steel pipe 1 is provided around the pouring hole 3, and the vertical plate 4 is integrated with the stiffened transverse rib 2 to form the reinforced stiffened transverse rib of the present invention; it can be seen from Fig. 2 that the described A glyph-shaped annular groove 5 is formed between the vertical plate 4 and the pipe wall of the steel pipe 1, and the concrete 6' in the annular groove 5 dissolves into one with the concrete 6 in the entire steel pipe 1 (see FIG. 3 ). Under the enveloping effect of the pipe wall of the steel pipe 1, the reinforced stiffening transverse rib an...

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Abstract

The invention discloses a reinforced rib-stiffened square / rectangular concrete-filled steel tube column, which comprises a square / rectangular steel tube (1) positioned vertically in the height direction, and a plurality of stiffening ribs (2) provided inside the steel tube (1) and each provided with a concrete filing hole (3) in the center. The invention is characterized in that a vertical plate (4) is provided circumferentially around the concrete filing hole (3) on each stiffening rib (2) and in parallel to the tube wall, forming a reinforced stiffening rib (2,4), wherein a ring-shaped groove (5) is defined between the vertical plate (4) and the tube wall; and the concrete (6') in the ring-shaped groove (5) is connected with the concrete (6) in the square / rectangular steel tube (1) as a whole. With the combined effect of reinforced stiffening rib and concrete in the ring-shaped groove, the core concrete is applied with a constraint force and the inertial moment of the cross section where the column is located is increased, so that the axial carrying capacity of the whole concrete-filled steel tube column is increased.

Description

technical field [0001] The invention relates to a load-bearing elongated building component made of concrete with a permanent formwork component, in particular to a square steel tube (rectangular steel tube) concrete column. Background technique [0002] The square / rectangular concrete-filled steel tube column not only has the characteristics of good extensibility, high bending strength, and excellent seismic performance of the steel structure column, but also overcomes the inconvenience of joint design, construction and use of the circular steel tube concrete column. a major direction of development. Conventional square / rectangular CFST columns are formed by pouring concrete into square / rectangular steel pipes. Since the column mainly bears the axial force in the building structure, when the square concrete filled steel tube column reaches the ultimate strength, the steel tube at the corner will be plastically deformed, the steel tube in the edge will peel off from the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/34
Inventor 黄襄云李玉楼徐丽
Owner GUANGZHOU UNIVERSITY
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