Self-centering buckling restrained brace end connecting device

Abstract

The invention discloses a self-centering buckling restrained brace end connecting device which comprises an interlayer rubber end plate, an I-shaped connecting plate and friction plates, wherein the I-shaped connecting plate penetrates through the interlayer rubber end plate, and the friction plates are connected to the two sides of a web of the unrestrained end of the I-shaped connecting plate. The interlayer rubber end plate comprises a rubber pad, an end plate, an outer cushion plate and two inner cushion plates, wherein the end plate is arranged on the side, facing the friction plate, of the rubber pad, and the outer cushion plate and the two inner cushion plates are arranged on the other side of the rubber pad. Slots are formed in the web of the unrestrained end of the I-shaped connecting plate in the longitudinal direction, and the I-shaped connecting plate and the friction plate can slide relatively along the slots. According to the connection mode of the self-centering buckling restrained brace end connecting device and a self-centering buckling restrained brace, the restrained end of the I-shaped connecting plate is welded to one end of a core plate and an outer sleeve, the outer cushion plates are in contact with the outer sleeve, the inner cushion plate is in contact with an inner sleeve, and a pre-tensioning rod arranged in the inner sleeve is anchored on the end plate after prestress is applied.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a self-centering buckling restraint support end connection device 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 (such as energy-dissipating supports), but the overall function will not be lost, relying on the plastic deformation of components to dissipate most Earthquake energy, so as to achieve the purpose of ensuring the safety of the main structure. Among them, buckling-restrained braces have been widely used in recent years because of their advantages such as strong energy dissipation capacity, good shock absorption effect and easy replacement after earthquakes. [0003] Buckling-restrained bra...

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The present invention aims at the defect that the existing self-centering buckling restraint support has a large initial rigidity, is significantly affected by the length processing error of the casing, and is prone to breakage of the pre-tie rod when large deformation occurs, and provides a self-centering The initial stiffness of the central buckling restrained support reduces the influence of casing length processing errors, and can effectively avoid the self-centering buckling restrained support end connection device from breaking the pre-tie rod

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