Limit sleeve U-shaped soft steel damper

Abstract

The invention discloses a limit sleeve U-shaped soft steel energy dissipation damper. A protective shell is added in the limit sleeve U-shaped soft steel energy dissipation damper to prevent a U-shaped soft steel damper from buckling instability out of the surface; a fixing piece for fixing U-shaped soft steel plate is added in the limit sleeve U-shaped soft steel energy dissipation damper, the cross section is designed as a special arc shape, the arc fixing piece can prevent a serious stress concentration phenomenon generated in the position of fixing the U-shaped soft steel plate; a main body of the U-shaped soft steel damper is composed of the U-shaped soft steel plate, springs, sliding guide rods, rectangular guide rods and the protective shell; and two ends of the sliding guide rods are provided with ultimate displacement protection plates to avoid oversize deformation to suddenly break a damper. The limit sleeve U-shaped soft steel energy dissipation damper is simple in structure, low in price and easy to produce in batches, and can be applied to energy dissipation vibration reduction systems with various structures.

Description

technical field [0001] The invention relates to an energy-dissipating shock-absorbing device for a building structure, in particular to a U-shaped mild steel damper with a limit sleeve. Background technique [0002] With the development of the anti-seismic and wind-resistant design theory of civil engineering structures, the idea of ​​energy dissipation and shock absorption has been applied in various types of anti-seismic construction projects, and the design and use of energy dissipation components and energy dissipation dampers have become more and more common. Among them, the metal yield damper can provide additional stiffness and damping for the structure at the same time, has stable hysteretic characteristics, good low-cycle fatigue resistance, and strong adaptability to the environment, making it have a very wide application prospect in practical engineering. Metallic yield dampers with superior performance are ideal for controlling the displacement response of struct...

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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