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Corrugated steel pipe concrete overlapped component and manufacturing method thereof

A technology of corrugated steel pipes and superimposed members, applied in the direction of building structure, construction, etc., can solve the problem of affecting the bearing capacity and seismic ductility of superimposed members, the external reinforcement of superimposed columns is prone to corrosion, and affecting the interoperability of reinforced concrete, etc. problems, to achieve the effect of improving collaborative work performance, improving restraint capacity, and high bearing capacity

Inactive Publication Date: 2020-04-14
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The interface performance between the steel pipe of CFST and the external reinforced concrete is relatively poor, which affects the cooperative performance of CFST and external reinforced concrete;
[0005] 2) Under the action of repeated seismic loads and high axial forces, buckling of the inner steel pipes is easy to occur, and the buckling of the steel pipes will lead to premature spalling of the outer concrete, which will affect the normal test and reduce the seismic ductility of the composite column;
[0006] 3) In corrosive environments such as chloride salts, the external reinforcement of the composite column is prone to corrosion, and with the expansion and cracking of the external concrete by the corroded steel reinforcement, the internal steel pipe will be corroded, seriously affecting the bearing capacity and seismic ductility of the composite component.

Method used

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  • Corrugated steel pipe concrete overlapped component and manufacturing method thereof
  • Corrugated steel pipe concrete overlapped component and manufacturing method thereof
  • Corrugated steel pipe concrete overlapped component and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 and figure 2 As shown, a corrugated steel pipe concrete composite member includes reinforced concrete and a steel pipe arranged in the center of the reinforced concrete; the steel pipe is a corrugated steel pipe 1, and the crest and trough directions of the corrugated steel pipe 1 are perpendicular to the length direction of the corrugated steel pipe 1 or are in line with the corrugated steel pipe 1. The length direction of the steel pipe 1 is oblique; the corrugated steel pipe 1 is filled with core concrete 2, the core concrete 2 in the corrugated steel pipe 1 is made of ordinary concrete, and the strength grade of the core concrete is C50; the corrugated steel pipe 1 is a circular corrugated steel pipe with galvanized surface ; The wall thickness of the steel pipe is 4mm, and the material is Q235B.

[0038] The outer periphery of the corrugated steel pipe 1 is wrapped with superimposed concrete 5 with a thickness of 200mm. The superimposed concrete ...

Embodiment 2

[0048] Such as figure 1 and image 3 As shown, a corrugated steel pipe concrete composite member includes reinforced concrete and a steel pipe arranged in the center of the reinforced concrete; the steel pipe is a corrugated steel pipe 1, and the crest and trough directions of the corrugated steel pipe 1 are perpendicular to the length direction of the corrugated steel pipe 1 or are in line with the corrugated steel pipe 1. The length direction of the steel pipe 1 is oblique; the corrugated steel pipe 1 is filled with core concrete 2, the core concrete 2 in the corrugated steel pipe 1 is made of ordinary concrete, and the strength grade of the core concrete is C45; the corrugated steel pipe 1 is a circular corrugated steel pipe with galvanized surface ; The wall thickness of the steel pipe is 3mm, and the material is Q345B.

[0049] The outer periphery of the corrugated steel pipe 1 is wrapped with a composite concrete 5 with a thickness of 150mm. The composite concrete 5 is ...

Embodiment 3

[0059] Such as figure 1 and Figure 4 As shown, a corrugated steel pipe concrete composite member includes reinforced concrete and a steel pipe eccentrically arranged inside the reinforced concrete; the steel pipe is a corrugated steel pipe 1, and the direction of the crest and trough of the corrugated steel pipe 1 is perpendicular to the length direction of the corrugated steel pipe 1 or is in line with the corrugated steel pipe 1. The length direction of the steel pipe 1 is oblique; the core concrete 2 is filled in the corrugated steel pipe 1, and the core concrete 2 in the corrugated steel pipe 1 is made of high-strength concrete, and the strength grade of the core concrete is C60; A steel pipe welded by steel plates with a rectangular cross-section; the wall thickness of the steel pipe is 6mm, and the material is Q345C.

[0060] The outer periphery of the corrugated steel pipe 1 is wrapped with laminated concrete 5 with a thickness of not less than 80mm. The laminated con...

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Abstract

The invention discloses a corrugated steel pipe concrete overlapped component and a manufacturing method thereof. The component comprises reinforced concrete and a steel pipe arranged inside the reinforced concrete and is characterized in that the steel pipe is a corrugated steel pipe, the directions of the wave crest and the wave trough of the corrugated steel pipe are perpendicular to the lengthdirection of the corrugated steel pipe or skew to the length direction of the corrugated steel pipe, core concrete fills the corrugated steel pipe, overlapped concrete with the thickness of 80 mm orabove is wrapped around the outer circumference of the corrugated steel pipe, and a reinforcement framework cage is arranged inside the overlapped concrete. According to the component, the bonding performance and the anti-seismic ductility of the steel pipe and the overlapped concrete can be improved, the bearing capacity of the component is improved, and the overlapped component can better adaptto the corrosion environment.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a corrugated steel tube concrete composite component and a manufacturing method thereof. Background technique [0002] With the rapid development of high-rise buildings, long-span bridges, marine engineering and underground engineering in China, the loads that buildings or structures need to bear are increasing, and the environment they are in is becoming more and more complex. Therefore, structural components have high bearing capacity. At the same time, it also needs to have good shock resistance and durability. [0003] The concrete-filled steel tube composite column has a high bearing capacity by setting a concrete-filled steel tube core column in the middle of the reinforced concrete section, so it is increasingly widely used in the above-mentioned engineering structures. However, the traditional CFST composite columns have the following problems: [0004] 1) The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/30
CPCE04B1/30
Inventor 李贤廖声亮阴冬冬张紫林马宸
Owner CHINA UNIV OF MINING & TECH
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