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A kind of double-core plate buckling restraint support and its manufacturing method

A buckling-constrained, double-core slab technology, applied to building components, earthquake resistance, etc., can solve problems such as brittle fracture, poor ductility of steel materials, time-consuming and inefficient, etc.

Active Publication Date: 2019-03-29
SOUTH CHINA UNIV OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) In terms of performance: there is a welding heat-affected zone in the axial length direction of the cross core plate 1, resulting in poor ductility of the steel material; There are also deficiencies such as slag inclusions and pores inside the seam, which lead to poor ductility of the weld metal; in addition, there is a large welding residual stress in the long-term welding, which makes the steel of the cross core plate 1 in a three-dimensional tension state, and is prone to brittle fracture
The above-mentioned defects in performance are the factors that lead to the reduction of energy dissipation capacity and ductility of the cross core plate 1
[0008] (2) In terms of processing: the long-term welding of the four welds in the cross core plate 1 is very time-consuming and inefficient, and produces a large welding residual deformation, which has a great impact on the assembly of the buckling-constrained support and the stability of the support. Higher requirements are also put forward for the processing and manufacturing methods, which indirectly increases the production and time costs of components

Method used

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  • A kind of double-core plate buckling restraint support and its manufacturing method
  • A kind of double-core plate buckling restraint support and its manufacturing method
  • A kind of double-core plate buckling restraint support and its manufacturing method

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Embodiment 1

[0053] like Figure 4 , 6 As shown, further, the steel tube concrete constraining member includes steel tubes 2 and concrete 3 . Wherein, the concrete 3 is poured into the steel pipe 2 , and the inside of the concrete 3 is provided with a cavity matching the shape of the double core plate 4 . In this embodiment, the steel pipe 2 and the concrete 3 poured into the steel pipe 2 form a rigid structural member, which is used to provide bending rigidity for the double-core slab 4 . And the cavity inside the concrete 3 is used for accommodating and placing the double core board 4 .

[0054] Further, an anti-adhesion layer (not marked) is provided between the double-core slab 4 and the concrete 3 . In this embodiment, on the one hand, the anti-bonding layer prevents the concrete 3 from being bonded to the surface of the double-core slab 4, and on the other hand, a non-rigid contact substance is added between the side wall of the double-core slab 4 and the concrete 3, which can De...

Embodiment 2

[0056] like Figure 7 , 8 , 9, and 10, further, the concrete-filled steel tube confinement member includes two channel steel confinement members 6 . Specifically, the channel steel constraining member 6 is assembled by channel steel and a strip-shaped cover plate 7 into a long strip-shaped square tube with a cavity inside, and concrete 3 is poured inside it. The two channel steel constraining members 6 are respectively arranged on both sides of the double core plate 4 in the thickness direction, and the cover plates 7 of the two channel steel constraining members 6 are far away from the double core plate 4 . In this embodiment, the combined structure of the channel steel and the cover plate 7 is set, so that the concrete 3 can be poured into the channel steel when the cover plate 7 is not assembled, avoiding the difficulty of vibrating the concrete 3, the formation of the cavity and the formation of the groove. Problems such as the end expansion of the steel restraint member...

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Abstract

The invention provides a double-core-plate buckling restrained brace and a manufacturing method thereof. The double-core-plate buckling restrained brace comprises a double-core plate, four reinforcing rib plates and a concrete-filled steel tube restraining member. The double-core plate is formed by splicing two stripe-shaped flat plates with the same appearance in the mode of attaching the side planes in the thickness directions of the two stripe-shaped flat plates to each other, and resin gel is arranged between the two stripe-shaped flat plates. Two reinforcing rib plates are perpendicularly arranged on the central lines of the two side planes of the double-core plate respectively, and the other two reinforcing rib plates are perpendicularly arranged on the central lines of the two side planes of the double-core plate respectively. The concrete-filled steel tube restraining member is a strip-shaped member and is connected to the side wall of the double-core plate in a sleeving mode. The manufacturing method of the double-core-plate buckling restrained brace comprises the steps that the reinforcing rib plates are welded, the strip-shaped flat plates are bonded, and finally assembling forming is carried out. According to the double-core-plate buckling restrained brace and the manufacturing method thereof, the double-core plate is used for replacing a cross core plate, and the resin gel connecting mode is used for reducing defects caused by core plate welding and relieving the deformation character of the core plate; the supporting bearing force is increased, and the manufacturing difficulty is lowered.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a double-core plate buckling restraint support and a manufacturing method thereof. Background technique [0002] The buckling-restrained brace is an axial tension-compression member with high bearing capacity and an efficient energy-dissipating shock-absorbing device. Composed of junction material and filling material. This is a support that has the same bearing capacity as a normal support when it is in tension and has an energy dissipation mechanism when it is in tension. In buckling-restrained bracing, only the core plate is connected to other components, and all the loads are borne by the core plate. The casing and filling material only restrain the core plate from buckling under compression, so that the core plate can enter yield under both tension and compression. Therefore , the hysteretic performance of the buckling restrained brace is excellent. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98
CPCE04B1/98
Inventor 赵俊贤白佳楠尹燕青杜永山迟雪晶韩伟丁文广卢晓岭
Owner SOUTH CHINA UNIV OF TECH