Metal energy dissipation device with controllable strain amplitude

Abstract

The invention particularly relates to a metal energy dissipation device with controllable strain amplitude. The metal energy dissipation device with the controllable strain amplitude is characterized in that the metal energy dissipation device comprises a middle connecting plate, a S-shaped guide groove arranged on the middle connecting plate, an upper connecting plate, a circular steel force transferring key, an energy consuming steel plate belt and a lower connecting plate; the upper part of the circular steel force transferring key is connected with the upper connecting plate in a rigid mode, and the lower part of the circular steel force transferring key is arranged in the S-shaped guide groove of the middle connecting plate in a clamped mode and can slide in the S-shaped guide groove; the upper and lower ends of the energy consuming steel plate belt is correspondingly connected with the middle connecting plate and the lower connecting plate in a rigid mode; and the middle connecting plate is located below the upper connecting plate, and the middle connecting plate and the upper connecting plate are arranged in a parallel mode without contact. According to the energy dissipation device, relative deformation of a structure horizontal direction is transferred into the relative deformation of a vertical direction of the metal energy dissipation device, maximal plastic deformation and strain of the metal energy dissipation device are controlled, meanwhile, the circular steel force transferring key only transfers a horizontal force, and the relative deformation of the vertical direction is not constrained, so that a axial direction tension for weakening low cycle fatigue property of the energy dissipation device can be released.

Description

technical field [0001] The invention relates to the field of building structures, in particular to a metal energy dissipator with controllable strain amplitude. Background technique [0002] In order to reduce the degree of damage to building structures caused by earthquake disasters, two types of technologies, shock absorption and shock isolation, are often used. The shock absorption technology is to add energy-consuming devices to the main structure to absorb the input energy of the earthquake; the shock isolation technology is to install a shock-isolation layer at the bottom of the structure, which can change the spectral characteristics of the structure and avoid the resonance frequency of the structure. [0003] In structural design, the size of the initial yield deformation of the energy dissipator can be properly selected to control the timing of its energy dissipation effect. However, once its initial yield deformation is selected, it will be difficult to ensure tha...

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Problems solved by technology

However, once the initial yield deformation is selected, it will be difficult to ensure that it will play a role in small earthquakes, moderate earthquakes, and large earthquakes. The earlier, the worse its maximum deformability

The energy-dissipating damper yields in small earthquakes. Since the maximum deformation capacity of the energy dissipation device is limited, and the deformation of the energy dissipation device is positively related to the structural deformation, it is likely to occur in a moderate or large earthquake due to insufficient ductility (maximum deformation capacity) And breakage occurs, thus losing its effect

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