A Self-Centering Buckling Constrained Brace for Large Deformation Pulley Blocks

Abstract

The invention discloses a large-deformation pulley group self-centering buckling restraint support, which comprises a rectangular middle sleeve, a rectangular inner sleeve located inside the rectangular middle sleeve, a rectangular outer sleeve set outside the rectangular middle sleeve, and a rectangular middle sleeve. Two outer end plates at both ends of the pipe, two inner end plates arranged at both ends of the rectangular inner sleeve, pulleys arranged on the side of the inner end plate close to the rectangular inner sleeve, and the first set of pre-tensioning rods arranged in the rectangular inner sleeve and the second group of pre-tensioning rods, the core plate is arranged between the rectangular middle sleeve and the rectangular outer sleeve, one end of the core plate is connected to one end of the rectangular middle sleeve, and the other end of the core plate is connected to the other end of the rectangular outer sleeve; After the first group of pre-tensioning rods bypasses the pulley connected to the inner end plate at one end, the two ends of the first group of pre-tensioning rods are respectively anchored to the outer end plate at the other end and the inner end plate at the other end; After the pulley connected to the inner end plate at one end, the two ends of the second set of pre-tension rods are respectively anchored to the outer end plate at one end and the inner end plate at one end.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a large-deformation pulley group self-centering buckling restraint support for reducing earthquake disasters of engineering structures. Background technique [0002] Earthquakes bring extremely serious disasters to human beings. The traditional seismic design adopts the ductility design method, that is, under the action of an earthquake, through the early yield and failure of some structural components, but the overall function will not be lost, relying on the plastic deformation of the components to dissipate most of the seismic energy, so as to achieve The purpose of ensuring the safety of the main structure. However, the plastic deformation of components will lead to large residual deformation of the structure after the earthquake, which will greatly increase the difficulty of structural repair. [0003] To control the residual deformation of the structure, self-centering buck...

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Problems solved by technology

[0004] Technical problem: The present invention aims at the problem that the existing self-centering buckling constrained support has a large demand for the elastic elongation of the pre-tensioned rod, and the traditional prestressed material cannot meet the requirements, and provides a large elastic elongation that can effectively reduce the demand for the pre-tensioned rod. Self-centering buckling-restrained support of deformed pulley blocks

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