Equivalent yield strength line-shaped optimized diamond-shaped opening anti-buckling type metal energy dissipater being replaceable after earthquake

Abstract

The invention relates to an equivalent yield strength line-shaped optimized diamond-shaped opening anti-buckling type metal energy dissipater being replaceable after an earthquake which is suitable for wind resistance and damping of construction structures. The metal energy dissipater comprises energy dissipation metal plates, equivalent yield strength line-shaped optimized diamond-shaped openinggrooves, anti-buckling plates, stiffening ribs with a limiting function, a smooth face, L-shaped supports, limiting keys, a fraction face, prestressing buckling locks, friction plates, high-strength bolts, nuts, cushion sheets, pre-buried connection steel plates, anchoring parts, bolt holes with threads, separation plates, smooth concave surfaces and a slideway, and a gradual residual stress unloading method is adopted. The metal energy dissipater can concentrate energy on the energy dissipation metal plates when being subjected to wind vibration or earthquake effects, the elastoplasticity hysteresis deformation of the energy dissipation metal plates is utilized to dissipate harmful energy, and thus a main body structure is protected. The optimized diamond-shaped holes are formed in the energy dissipation metal plates, deformation is even, and the earthquake resistant capability is high. Replaceable connection is adopted so that the metal energy dissipater can still be safely dismounted and mounted under a situation that residual displacement still exists after the earthquake, and the utilization function of the structure can be rapidly recovered.

Description

technical field [0001] The invention relates to the technical fields of wind resistance and earthquake resistance of building structure engineering and bridge engineering, and relates to a diamond-shaped opening anti-buckling type metal energy dissipator with optimized equal yield strength line shape that can be replaced after an earthquake. Background technique [0002] In recent years, more and more major earthquakes have seriously threatened the safety of building structure engineering and bridge engineering, resulting in huge casualties and property losses. With the continuous revision of "anti-regulation" in my country, more and more cities Increased fortification intensity. The traditional anti-seismic forms of structures are difficult to meet the design requirements of the new code. For this reason, "energy dissipation and shock absorption" technology has been continuously applied to architectural structural engineering and bridge engineering. The parts that are pron...

AI Technical Summary

Problems solved by technology

Conventional metal energy dissipators use in-plane plastic deformation to dissipate energy, and have high stiffness and bearing capacity, but the unfavorable out-of-plane displacement of metal energy dissipators is difficult to control

Traditional metal energy dissipators are mostly welded. The test shows that: first, the stress at the weld is too concentrated, and its premature cracking seriously weakens the energy dissipation capacity of the energy dissipator; second, the cross-section of the traditional metal energy dissipator Low utilization rate, uneven distribution of plasticity, insufficient energy consumption; moreover, due to welding and fixing, it is difficult to disassemble and repair after damage

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