Fiber pre-drawing-rod type self-centering round tube buckling restrained support

Abstract

The invention discloses a fiber pre-draw-rod type self-centering round tube buckling restrained support which comprises a core energy-consumption round tube, an inner restrained round tube arranged in the core energy-consumption round tube, an outer restrained round tube sleeved outside the core energy-consumption round tube, two end plates arranged at two ends of the energy-consumption round tube, a fiber drawing rod for connecting the two end plates and connection parts connected with the end plates. The inner wall on one side of the core energy-consumption round tube is connected with one end of the inner restrained round tube, the outer wall on the other side of the core energy-consumption round tube is connected with one end of the outer restrained round tube, small holes distributed in array mode are arranged on the tube wall of the core energy-consumption round tube, a plurality of groove openings are arranged at two ends of the core energy-consumption round tube, notches matched with the end portion of the core energy-consumption round tube are arranged on the end plates, the end plates are inserted into the groove openings to be contacted with the end portions of the inner restrained round tube and the outer restrained round tube, the fiber drawing rod is arranged in the inner restrained round tube, prestress is exerted to tension the end plates at two ends, and the connection parts are both connected on the outer sides of the two end plates.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a fiber pretensioned rod-type self-centering circular tube buckling restraint support for reducing earthquake disasters of engineering structures. Background technique [0002] Earthquakes bring extremely serious disasters to human beings. When a strong earthquake comes, the engineering structure will bear the huge energy input by the earthquake and produce a strong structural response. The resulting local damage or overall collapse of the structure constitutes the most important factor in the earthquake disaster. It is necessary to adopt economical, reliable, and efficient Structural anti-seismic technology. 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. Among them, the circular tube buckling-restrained brace h...

AI Technical Summary

Problems solved by technology

[0006]Technical problem: The present invention aims at the defect that the residual deformation of the existing circular tube buckling-constrained support system is too large, and provides a method to effectively reduce the residual deformation of the buckling-constrained support system. Buckling-restrained bracing of fiber pre-tensioned self-centering circular tubes that greatly improves the repairability of engineering structures after earthquakes

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