Self-resetting mild steel energy dissipation support

Abstract

The invention relates to a self-resetting soft steel energy dissipating brace, which mainly consists of a brace component, a prestress device, an energy dissipating device and a plurality of fixed connecting components, wherein soft steel is connected with end plates through force transmission devices; one end of an inner sleeve is provided with a groove; a projected connecting plate can penetrate into the groove to be welded with the inner sleeve; an outer sleeve covers the inner sleeve; arc-shaped welding splicing plates are symmetrically welded on the outer surface of one end of the outer sleeve; the outwards extending part of each arc-shaped splicing plate is welded with a combined connecting plate; the end plates are positioned at two ends of the sleeves; resetting bars are arranged in the inner sleeve; and the two ends of the resetting bars are connected with the end plates through anchor devices. The self-resetting soft steel energy dissipating brace has the advantages that the soft steel is used to be stressed in the plane; greater initial rigidity is provided for a structure; the earthquake design level of no damage in minor earthquake is achieved; when medium or great earthquake occurs, the energy is dissipated through the plastic deformation of the soft steel; after the earthquake action stops, the soft steel is reset by using the recovery force of the resetting bars, so that the residue deformation of the structure is eliminated; and the earthquake design level of reparability after medium earthquake and falling prevention in great earthquake is achieved.

Description

technical field [0001] The invention relates to a self-resetting mild steel energy-dissipating support. The device uses special plane-shaped mild steel to bear force in the plane, provides a relatively large initial rigidity for the structure, and satisfies the design level of "not damaged by small earthquakes"; When a moderate earthquake or a major earthquake comes, the energy is dissipated through the plastic deformation of the mild steel. After the earthquake, the restoring force of the reset tendon is used to reset the soft steel, thereby eliminating the lateral deformation (residual deformation) of the structure and satisfying the The fortification level of "repairable in moderate earthquakes and not collapsed in major earthquakes" belongs to the technical field of anti-seismic and energy dissipation and shock absorption of civil structures (including high-rise buildings, high-rise structures, bridge structures, etc.). Background technique [0002] In recent years, the ...

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Problems solved by technology

This will inevitably lead to large residual deformation of energy-dissipating components or energy-dissipating devices after a large earthquake, which will also cause excessive lateral deformation of the entire structure (residual deformation)

Previous earthquake damages have shown that the excessive lateral deformation (residual deformation) of structures during strong earthquakes is the direct cause of structural damage and collapse. For structures that are about to collapse or may experience subsequent earthquakes, residual deformation will have a serious impact on them. In addition, when the residual deformation angle is greater than 0.5%, the maintenance cost of the building will be greater than the reconstruction cost

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