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Fire-resistant buckling restrained brace structure

A buckling restraint and support structure technology, applied in fire protection, building components, earthquake resistance, etc., can solve problems such as buckling instability of core materials, difficulty in ensuring the stiffness and ductility of support structures, etc.

Active Publication Date: 2021-04-06
南通装配式建筑与智能结构研究院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that there is a phenomenon of buckling instability of the core material after long-term compression, which makes it difficult to ensure the stiffness and ductility of the supporting structure.

Method used

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  • Fire-resistant buckling restrained brace structure
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  • Fire-resistant buckling restrained brace structure

Examples

Experimental program
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Embodiment 1

[0037] The embodiment of the present application discloses a fire-resistant buckling constrained support structure. refer to figure 1 , including a cross core plate 1 and a refractory steel sleeve 2. In this embodiment, the cross core plate 1 is formed by vertical welding of several angle steels, and the cross section of the cross core plate 1 is cross-shaped.

[0038] refer to figure 2, the outer wall of the cross core board 1 is bonded with a shock absorber 11, and the shock absorber 11 can be a film layer made of any material in rubber film, waterproof roll and polyethylene film. In this embodiment, The cushioning element 11 is a film layer made of rubber, and the height of the cushioning element 11 is smaller than that of the cross core plate 1 .

[0039] refer to figure 1 , the refractory steel sleeve 2 is a hollow square steel pipe made of refractory steel, the inner diameter of the refractory steel sleeve 2 is larger than the outer circumference of the cross core p...

Embodiment 2

[0043] refer to image 3 , The difference between this embodiment and Embodiment 1 is that the cross core plate 1 includes a fixing plate 3 and an abutting plate 4 . In this embodiment, both the fixing plate 3 and the abutting plate 4 are made of angle steel, and the outer peripheral dimensions of the two are equal.

[0044] refer to Figure 4 , 5 One end of the fixing plate 3 in the height direction is provided with a preset groove 31 , and the preset groove 31 is arranged along the extending direction of the fixing plate 3 . One end of the height direction of the abutment plate 4 is provided with a snap-in groove 41, and the snap-in groove 41 is arranged along the extension direction of the abutment plate 4, and the height dimension of the snap-in groove 41 is smaller than the height dimension of the preset groove 31, and the snap-in groove 41 The height dimension plus the height dimension of the preset groove 31 is equal to the height dimension of the fixing plate 3 or t...

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Abstract

The invention relates to a fire-resistant buckling restrained brace structure. The fire-resistant buckling restrained brace structure comprises a cross core plate and a fire-resistant steel sleeve, wherein the cross core plate is located in an inner cavity of the fire-resistant steel sleeve, and the two ends of the cross core plate in the height direction extend to the outside of the fire-resistant steel sleeve respectively; and a concrete pouring block is arranged between the cross core plate and the fire-resistant steel sleeve, a cushioning part is arranged on the outer side wall of the cross core plate and located at the fire-resistant steel sleeve, and the cushioning part is located between the concrete pouring block and the fire-resistant steel sleeve. The fire-resistant buckling restrained brace structure has the advantages that the mechanical property and the use effect of the brace structure at high temperature are guaranteed, and the rigidity and the ductility of the brace structure after long-time use are effectively guaranteed.

Description

technical field [0001] The present application relates to the field of buckling constrained support structures, in particular to a fire-resistant buckling constrained support structure. Background technique [0002] Ordinary support structures will buckle when they are under compression, and the buckled support structures will reduce their own stiffness and bearing capacity. The buckling-restrained support structure is a structure in which limiters are set outside the support. The support is used to bear all the loads. The buckling phenomenon ensures the stiffness and ductility of the supporting structure. [0003] The Chinese patent with the publication number CN210032181U discloses a buckling-constrained support, including a core material and an outer casing. The core material is axially inserted into the inner cavity of the outer sleeve, and the inner cavity of the outer sleeve is filled with concrete, which is solidified into blocks and pressed tightly between the oute...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04H9/02E04B1/94
CPCE04B1/98E04H9/021E04B1/94
Inventor 宫海郭建好刘博文崔强陈林恒孟令明
Owner 南通装配式建筑与智能结构研究院