Two-stage work metal energy dissipation device

Abstract

The invention discloses a two-stage work metal energy dissipation device. A core energy dissipation assembly comprises a shearing type energy dissipation assembly and a bent energy dissipation assembly; the shearing type energy dissipation assembly comprises two rectangular low-yielding steel sheets fixedly connected with an upper top plate and a lower bottom plate, and the two rectangular low-yielding steel sheets are arranged in parallel; the bent energy dissipation assembly comprises a plurality of bent energy dissipation steel sheets fixedly connected with the upper top plate and the lower bottom plate, the bent energy dissipation steel sheets are parallel with one another and arranged between the two rectangular low-yielding steel sheets in a spaced mode, and meanwhile the bent energy dissipation steel sheets are perpendicular to the two rectangular low-yielding steel sheets. According to the two-stage work metal energy dissipation device, common steel and low-yielding-point steel are combined for use on a materials according to the idea that bent yielding displacement is larger than shearing yielding displacement, the number of bent plates and the number of shearing plates are reasonably set, it is guaranteed that the device can perform yielding work in the two stages of a small earthquake and a large earthquake, structural damage is avoided, and the protection function is achieved.

Description

technical field [0001] The invention relates to a shock absorbing device for an engineering structure, in particular to a two-stage working metal energy dissipator, which belongs to the technology of energy dissipation, shock absorption and vibration control for engineering structures. Background technique [0002] The energy dissipation and shock absorption technology of engineering structures is to install energy dissipation devices in certain parts of the engineering structures, through which the energy dissipation devices produce hysteretic deformation to dissipate or absorb the energy input into the structure by earthquakes, so as to reduce the seismic response of the main structure, thereby avoiding The structure is damaged or collapsed to achieve the purpose of shock absorption control. The metal energy dissipator has the advantages of clear energy dissipation principle, simple structure, and stable energy dissipation performance, and its long-term use performance and...

AI Technical Summary

Problems solved by technology

[0003] Although the existing metal energy dissipation devices have a variety of structural shapes, most of them have a single form of energy dissipation and can only function under large earthquakes. Under small earthquakes, the energy dissipation devices are in an elastic state and cannot participate in the dissipation of structural seismic energy.

Therefore, frequent small earthquakes will also cause certain damage to the structure and cause economic losses, and the large additional stiffness of the energy dissipation device will also lead to the amplification of the earthquake effect

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