Function-restorable soft steel damper

Abstract

The invention discloses a function-restorable soft steel damper. The function-restorable soft steel damper comprises a web, a structural anchor plate, flange plates and an energy dissipation component, wherein the end faces of both sides of the web are fixedly connected with the flange plates respectively; the upper and lower end faces of the web are fixedly connected with the structural anchor plate respectively; the web is a residual web formed by removing a portion from a complete web; the energy dissipation component is arranged at a vacated position on which the web is removed; the two ends of the energy dissipation component along the height direction of the soft steel damper are fixedly connected with the web respectively. An energy dissipation plate of the energy dissipation component enters plastic energy dissipation through reasonable design under the action of strong vibration, the web, the structural anchor plate and the flange plates always keep within an elastic range, and the energy dissipation component is fixedly connected with the web through a bolt, thereby realizing convenient and rapid replacement of the energy dissipation component after vibration, avoiding repairing other components of the soft steel damper, remarkably lowering the difficulty in replacing the entire soft steel damper after vibration, and realizing rapid recovery of the use functions of the current structure and member.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a mild steel damper for reducing the seismic response of engineering structures. Background technique [0002] The energy of the earthquake input structure is dissipated through the plastic deformation of metal materials, thereby reducing the response of the structure in the earthquake. This design concept of energy dissipation and shock absorption has been widely recognized in structural design. Mild steel shear plate damper is a kind of metal damper, which is often used in structural vibration control as an energy dissipation device. Its basic working principle is: in the event of earthquake or wind vibration, the shear deformation of the web enters the plastic yield to form hysteresis, dissipates the energy input into the structure, thereby increasing the equivalent damping of the structure, and achieving the purpose of energy dissipation and shock absorption. After the Hanshin ...

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Problems solved by technology

[0003] like figure 1 As shown, it is a schematic structural diagram of a traditional mild steel damper, which is composed of structural anchor plate 2, flange plate 3 and solid web, but there are certain problems in the mild steel shear plate damper: (1) shear The plate damper is connected with the structure and bears the shear force and part of the axial force and bending moment. During the earthquake, the web enters into plastic energy dissipation, and there is a certain residual deformation after the earthquake. Because of the axial force and bending moment, if the shear plate If the damper is replaced as a whole, the construction will be more complicated; (2) In the earthquake, the shear plate damper mainly dissipates energy through the shearing of the web, so the residual deformation of the web is generally large. For example, the structural anchor plate and the flange plate If they are replaced together, there will be a large waste, which does not meet the requirements of energy conservation and environmental protection; (3) further, if only the web is replaced, it is replaced by welding, considering the limitations of welding and on-site construction conditions, it is difficult to further ensure the replacement of the rear web The energy dissipation effect of the board

(4) At this stage, after a major earthquake, there will be a series of strong aftershocks. How to quickly restore the anti-seismic capacity and function of structures and components is also a problem that needs special attention in future design. The replacement of mild steel shear plate dampers will obviously cost longer time

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