Mild steel and friction damper

Abstract

The invention provides mild steel and a friction damper. The friction damper is mainly composed of oval friction plates, mild steel plates, fixing plates, center shaft anchor bolts, center shaft screw holes, fixing plate screw holes, friction plate spring clamping openings, springs and the like. The friction damper is characterized in that the two oval friction plates are arranged in an intersecting mode, two long shafts are perpendicular to each other, the mild steel plates are arranged on the outer sides of the two oval friction plates respectively, and a rectangular energy dissipation body is formed by the two oval friction plates and the two mild steel plates. The friction damper has the advantages that large initial stiffness can be achieved, under the action of wind vibrations and earthquakes, the friction damper can rapidly enter in an energy dissipation state, and moreover good energy-dissipating capacity can still be achieved under large deformation; the entire system is even in stress, stable and saving in material, and it is also guaranteed that the energy dissipation system is steady, effective, simple in structure, economical and practical; the friction damper can be used for the seismic design of novel constructional engineering and also can be used for reinforcement and maintenance of existing engineering.

Description

technical field [0001] The invention relates to a building structure vibration control device, in particular to a construction mild steel and friction damper for building structure vibration control. Background technique [0002] Metallic yielding dampers are various forms of damping energy dissipators made of mild steel or other soft metal materials. Metals have good hysteretic properties after yielding, and the elastic-plastic hysteretic deformation energy dissipation of some metals is used, including mild steel yield dampers, lead dampers, and shape memory alloys (SMA) dampers. The mechanism of its vibration control on the structure is to dissipate part of the energy of the structural vibration through the yield hysteresis energy dissipation of the metal, so as to achieve the purpose of reducing the structural response. [0003] The mild steel yield damper is to make full use of the good hysteresis characteristics of mild steel after entering the plastic stage. In 1972,...

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Problems solved by technology

[0005] If the force provided by the friction damper is too large, it is necessary to increase the positive pressure, which will lead to a large error in the calculated parameters, and will easily cause a significant reduction in energy consumption, and it will also easily cause the failure of the device

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