Novel U-shaped soft steel damper

Abstract

The invention discloses a novel U-shaped soft steel energy dissipation damper. A rectangular limiting steel plate and an auxiliary limiting piece are additionally arranged in the damper, and the situation that a U-shaped soft steel damper is prone to being subjected to buckling instability outside the face is avoided. The cross sections of fixing pieces for fixing U-shaped soft steel plates are each designed into a specific arc shape, and the form of fixing pieces can prevent the serious stress concentration phenomenon at the positions for fixing the U-shaped soft steel plates. A main body ofthe U-shaped soft steel damper of the structure is formed by connecting the U-shaped soft steel plates with a sliding guide rod, an upper connecting rod and a lower connecting rod; a limiting displacement protective plate is arranged on the sliding guide rod, and sudden damage of over large deformation to the damper is prevented; and the novel U-shaped soft steel energy dissipation damper is suitable for energy dissipation support, energy dissipation joints and energy dissipation connection of a building structure, and the application range of the novel U-shaped soft steel energy dissipation damper is wide.

Description

technical field [0001] The invention relates to an energy-dissipating shock-absorbing device for a building structure, in particular to a novel energy-dissipating damper. Background technique [0002] The metal yield damper can provide additional stiffness and damping for the structure at the same time. It has the advantages of stable hysteretic characteristics, good low-cycle fatigue, and strong ability to adapt to the environment, so it has a very wide application prospect in practical engineering. Among them, the mild steel damper is a kind of energy-dissipating shock-absorbing device in the passive control of the structure. In the case of earthquake or wind vibration, the mild steel damper dissipates the energy input into the structure through plastic yield hysteresis, and the purpose of shock absorption is achieved by installing energy dissipation dampers on the structure. U-shaped mild steel damper is a new type of metal damper with simple structure, strong energy dis...

AI Technical Summary

Problems solved by technology

However, due to the synergistic effects of tension, shear, and torsion, the stress state is complex, and it is prone to instability.

[0003] In the prior art, there is no reliable solution to the buckling instability of the U-shaped metal damper, and the joints of the U-shaped mild steel plate in the damper are prone to obvious stress concentration, and the design forms of the existing U-shaped metal dampers are mostly only It is suitable for seismic isolation of building foundations, but rarely involves in the application of building structure energy dissipation supports, energy dissipation nodes, energy dissipation connections, etc., which limits its application range in engineering practice

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