Earthquake non-loss and self-resetting energy-dissipation device for swing core

Abstract

The invention discloses an earthquake non-loss and self-resetting energy-dissipation device for a swing core. The earthquake non-loss and self-resetting energy-dissipation device for the swing core comprises a core screw, a compound connecting piece arranged on the core screw in a sleeving mode, limiting pieces arranged at two ends of the core screw, and ring spring groups which are arranged on the core screw in a sleeving mode and separately located between the two ends of the compound connecting piece and the two limiting pieces. The compound connecting piece comprises a first connecting piece and a second connecting piece, wherein the second connecting piece is arranged on the outer side of the middle portion of the core screw in a sleeving mode and can move in the axial direction of the core screw, and the first connecting piece is arranged on the outer side of the second connecting piece in a sleeving mode to enable the first connecting piece and the second connecting piece to generate relative displacement in the axial direction of the core screw. Compared with the prior art, the earthquake non-loss and self-resetting energy-dissipation device is simple in structure, clear inmechanism and stable in self-resetting energy dissipation performance, all components remain elasticity in the earthquake process, repair nor replacement is not needed after an earthquake, no economic loss is generated, and extensive application value is achieved.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and relates to an earthquake damage-free self-resetting energy consumption device for a rocking core. Background technique [0002] Structural forms with high flexural rigidity, such as reinforced concrete shear walls, steel frames or steel trusses whose swing core is hinged to the foundation, have only shear and tensile strength but no bending resistance to the connection with the foundation. The latest research shows that the rigid rocking core hinged at the bottom can prevent the weak layer failure of the structure under the action of large earthquakes, improve the ductility of the structure, and prevent the structure from collapsing. At present, the rocking core has a great application prospect in the seismic reinforcement of existing frame lateral structural systems, such as existing concrete frame structural systems, bending steel frame structural systems, and centrally brac...

AI Technical Summary

Problems solved by technology

Existing studies have shown that after a large plastic deformation of an earthquake, the energy dissipation capacity of the metal damper is significantly reduced, and the safety of the structure under the action of aftershocks cannot be guaranteed.

Due to the large plastic deformation of the metal damper, it is difficult to disassemble after the earthquake, and the cost of all replacement is also high

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