Soft steel damper with staged yield damping function

Abstract

The invention discloses a soft steel damper with a staged yield damping function. The damper comprises a pair of fold-surface connecting steel plates, soft steel energy-dissipation steel sheets, sleeve hoop pieces and high-strength bolts; the two fold-surface connecting steel plates are parallelly and symmetrically arranged in the vertical direction, the two opposite fold-surface connecting steelplates are connected through the multiple soft steel energy-dissipation steel sheets, and the soft steel energy-dissipation steel sheets are perpendicular to the planes where the connecting steel plates are located and the horizontal plane; the soft steel energy-dissipation steel sheets are provided with elliptical internal holes, the elliptical internal holes are horizontally formed in the long axis of the soft steel energy-dissipation steel sheets, and energy-dissipation ribs are formed by open holes of the internal holes; the two horizontal ends of the soft steel energy-dissipation steel sheets are perpendicularly embedded into hollowed-out positions of the fold-surface connecting steel plates correspondingly; the parts, extending out of the fold-surface connecting steel plates, of thetwo ends of the soft steel energy-dissipation steel sheets are connected with the sleeve hoop pieces; and the fold-surface connecting steel plates are connected with a building structure through the high-strength bolts. According to the soft steel damper, the goal of staged energy-dissipation damping is achieved, and the soft steel damper has the advantages of simple structure, convenient manufacturing and mounting, and good energy-dissipation effect.

Description

technical field [0001] The invention belongs to the technical field of metal energy dissipation dampers in civil engineering, in particular to a mild steel damper with staged yielding and shock absorption. Background technique [0002] The energy dissipation damper of metal material uses the plastic hysteretic deformation of metal to consume the energy generated in the earthquake. Due to the hysteretic characteristics of mild steel after entering the plastic state, it can absorb a large amount of energy in the process of elastic-plastic hysteretic deformation. , so this material is used to make different energy-dissipating shock absorbers. Common metal energy dissipation dampers are: X-shaped and triangular energy dissipation dampers, torsion beam energy dissipation dampers, bending beam energy dissipation dampers, etc. Compared with other types of dampers, metal dampers are easy to manufacture, stable in hysteresis, easy to replace, and low in cost. Therefore, metal damper...

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Problems solved by technology

[0003] At present, the common metal energy dissipation damper structure is relatively simple, most of which are X-shaped or triangular energy dissipation dampers, but there are the following problems: when encountering a small earthquake, the yield stress of the metal damper has not yet been reached, and the damper itself is in the In the elastic state, it does not play its due role, and the structure itself is damaged due to energy absorption; when encountering a large earthquake, the metal damper as a whole enters a plastic energy-consuming state to absorb more energy, but all soft dampers must be replaced after the earthquake. Steel energy-dissipating steel sheets have poor economy and operability; in addition, some mild steel dampers produce serious stress concentration after yield deformation, which makes the plastic distribution of the damper uneven and affects the utilization rate of the deformed material

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