Assembled self-resetting viscous energy dissipation support based on SMA stranded wire

Abstract

The invention provides an assembled self-resetting viscous energy dissipation support based on an SMA stranded wire, and belongs to the technical field of civil engineering seismic mitigation and absorption. An energy dissipation module comprises an oil cylinder (1), a piston rod (2), a porous piston (3), viscous liquid (4) and a sealing bushing (5); a self-resetting energy dissipation module comprises the SMA stranded wire (6), a high-strength bolt (7), a left connecting steel plate (8), a right connecting steel plate (9), a stud bolt (10), a movable steel plate (11), a first connecting rod (12) and a second connecting rod (13); and a certain distance is reserved between the energy dissipation module and the self-resetting energy dissipation module, and the SMA stranded wire stretches out and draws back through the certain distance and is installed between limiting stop blocks (15) arranged on an outer sleeve (14) in advance. Whether the assembled self-resetting viscous energy dissipation support is pressed or pulled, the SMA stranded wire is in a pulled state, the assembled self-resetting viscous energy dissipation support can continuously work, self-restoring force and energy dissipation capacity are provided, the energy dissipation module and the self-resetting energy dissipation module act together, and the assembled self-resetting viscous energy dissipation support has the advantages of being high in energy dissipation and capable of achieving self-resetting.

Description

technical field [0001] The invention belongs to the technical field of shock absorption and isolation in civil engineering, and in particular relates to an assembled self-resetting viscous energy-dissipating support based on SMA strands. Background technique [0002] Earthquake disasters are characterized by suddenness, low predictability, and strong destructiveness. They are considered to be one of the most serious natural disasters faced by human beings. It will cause great damage to the structure and seriously endanger people's lives and property safety. my country is located at the junction of the world's two major seismic belts—the Eurasian seismic belt and the circum-Pacific seismic belt. Most of the country's territory is an earthquake zone, so the seismic performance of structures needs to be improved urgently. The current structure mainly resists earthquakes by improving its own stiffness and strength, dissipating earthquake energy, so it does not have the ability ...

AI Technical Summary

Problems solved by technology

However, most of the self-resetting anti-buckling supports currently proposed have problems such as complex structure and high cost. The way of frictional energy dissipation will lead to the weakening of the roughness of the friction surface as the support reciprocates, which may cause the loss of preload in the component, resulting in the loss of energy dissipation capacity. decrease

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