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Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete

A technology of high-strength concrete and square steel pipe, applied in the directions of columns, piers, pillars, etc., can solve the problems of complicated construction of high-strength concrete joints of round steel pipes, many construction procedures, low flexural rigidity and flexural bearing capacity, etc., so as to shorten the construction time. The effect of period, convenient construction, high flexural bearing capacity and flexural rigidity

Inactive Publication Date: 2010-09-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. Section steel concrete involves section steel, longitudinal bars, stirrups and concrete, and there are many construction procedures
[0008] 1. Although the steel pipes in high-strength concrete with circular steel pipes have a good confinement effect on high-strength concrete, the high-strength concrete with circular steel pipes has low flexural stiffness and flexural bearing capacity due to the characteristics of circular cross-sections, and the construction of high-strength concrete with circular steel pipes is complicated. limit its application

Method used

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  • Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete
  • Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete
  • Square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete

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Embodiment 1

[0033] See attached figure 1 , 2 3. The high-strength concrete column constrained by the inscribed annular stirrup of the square steel pipe of the present invention comprises a square steel pipe 4, a stirrup 2, a longitudinal reinforcement 1, and a high-strength concrete 3, and the longitudinal reinforcement 1 is at least three along the 4 axes of the square steel pipe. set in the square steel pipe 4; the stirrup 2 is a single ring, the stirrup 2 is arranged along the axial direction of the longitudinal bar 1, and the distance between two adjacent ring stirrups is 30~ 80mm, the stirrup 2 is tangent to the inner surface of the square steel pipe 4 and fixed with the longitudinal bar 1 by spot welding or binding; the square steel pipe is poured with high-strength concrete 3, and the volume steel content of the square steel pipe The ratio of steel content to the volume of the stirrup is between (1:3) and (3:1).

Embodiment 2

[0035] See attached figure 1 , 2 , 4, the high-strength concrete column constrained by the inscribed annular stirrup of the square steel pipe of the present invention comprises a square steel pipe 4, a stirrup 2, a longitudinal reinforcement 1, and a high-strength concrete 3, and the longitudinal reinforcement 1 is at least three and along the 4 axes of the square steel pipe set in the square steel pipe 4; the stirrup 2 is a helix, and the stirrup 2 is arranged along the axial direction of the longitudinal bar 1, and the pitch of the helix is ​​30-80mm, and the stirrup 2 and the The inner surface of the square steel pipe 4 is tangent to the longitudinal reinforcement 1 and fixed by spot welding or binding; the square steel pipe is poured with high-strength concrete 3, and the ratio of the volume steel content of the square steel pipe to the volume steel content of the stirrup is The ratio is between (1:3)~(3:1).

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Abstract

The invention relates to a square steel tubular column with internally tangent ring-shaped stirrup restraint and high-strength concrete, which comprises a square steel tube, a stirrup, vertical ribs and high-strength concrete, wherein at least three vertical ribs are arranged in the square steel tube along the axial direction of the square steel tube; the stirrup is a single ring or spirochete, and is arranged along the axial direction of the vertical ribs; the stirrup is tangent to the inner surface of the square steel tube and is fixedly connected with the vertical ribs; and the high-strength concrete is cast in the square steel tube. The invention has the advantages of high bearing force, good stretchability, convenient construction, low cost, high bending resistant bearing force and bending resistant rigidity, and can replace the traditional square steel tubular columns with high-strength concrete, structural steel high-strength concrete columns and round steel tubular columns with high-strength concrete, shorten construction period and improve safety performance of buildings.

Description

technical field [0001] The invention relates to a high-strength concrete column, in particular to a high-strength concrete column constrained by a square steel tube inscribed with circular stirrups, and belongs to the technical field of building structural components. Background technique [0002] High-strength concrete has the advantages of high strength, small deformation, and good durability. It can adapt to the needs of modern engineering structures that are large-span, heavy-loaded, high-rise, and withstand harsh environmental conditions. High-strength concrete is an important trend in the development of modern concrete structures. The use of high-strength concrete frame columns in high-rise structures can effectively reduce the cross-section of the columns and increase the usable area of ​​the house. [0003] The superior performance makes the application range of high-strength concrete continuously expand: in foreign countries, the concrete strength grade has been app...

Claims

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Application Information

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IPC IPC(8): E04C3/34E04C5/01E04B1/30
Inventor 丁兴发周林超余志武
Owner CENT SOUTH UNIV
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