Coordinated friction damper with built-in combined energy dissipation steel plates

Abstract

The invention belongs to the field of vibration control of a building structure, and particularly relates to a coordinated friction damper with built-in combined energy dissipation steel plates. The coordinated friction damper comprises an upper plate, a lower plate, screw holes A, screw holes B, an external arc energy dissipation steel plate, energy dissipation mild steel plates, connection shafts, coordinated connection steel plates, built-in arc energy dissipation steel plates, an elastic binding filling material, a foamed aluminium energy dissipation material, energy dissipation buffer layers, semicircular energy dissipation steel plates, locking nuts, friction energy dissipation blocks and end plates; the coordinated friction damper with the built-in combined energy dissipation steelplates is of a structure formed by the surrounding of the upper plate, the lower plate, the external arc energy dissipation steel plates and the end plates. The coordinated friction damper has the beneficial effects that the arranged combined energy dissipation steel plates not only can dissipate energy by bending deformation of the combined energy dissipation steel plates, but also can be squeezed with the elastic binding filling material, the foamed aluminium energy dissipation material and the energy dissipation buffer layers mutually to dissipate energy when relative displacement occurs; the coordinated friction damper can improve overall rigidity of the building structure when in use in a normal state, and can reduce an earthquake response of the building structure in a case of an earthquake.

Description

technical field [0001] The invention belongs to the field of vibration control of building structures, in particular to a coordinated friction damper with built-in composite energy-dissipating steel plates. 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 some metals have elastic-plastic hysteretic deformation energy dissipation, including mild steel 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 structure vibration through the yield hysteresis energy consumption of the metal, so as to reduce the structural response. The mild steel damper is to make full use of the soft steel after entering the plastic stage Good hysteresis characteristics. In 1972, American scholars such as Kelly and Skinner first be...

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Problems solved by technology

After theoretical analysis and experimental research by many scholars at home and abroad, it is confirmed that the mild steel damper has stable hysteresis characteristics, good low-cycle fatigue performance, long-term reliability and is not affected by the environment and temperature. It is a very good damper. Promising energy consumers, all-metal dampers have the advantages of large recoverable deformation, strong damping capacity, durability, corrosion resistance, fatigue resistance, wide operating temperature range and low maintenance costs, and are transmitted to building structures due to earthquakes and other reasons The external energy of the structure is the source of the vibration of the structure, so the energy dissipation properties of the damper will be the key to reducing the vibration response of the structure. Anti-buckling effect, resulting in a significant reduction in energy dissipation capacity

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