A graded energy-dissipative damper of orthogonal corrugated slotted steel plates with viscoelastic materials

Abstract

The invention belongs to the field of anti-seismic and shock-absorbing civil engineering, and relates to an orthogonal waveform slotted steel plate damper with a viscoelastic material. Steel plates, viscoelastic materials, horizontally slotted shear-wave steel plates, energy-dissipating connections and vertical support plates. The invention can provide the structure with good lateral stiffness and energy dissipation capacity; under small earthquakes, the upper and lower end plates and the viscoelastic material will dissipate energy, and under moderate earthquakes, the energy-dissipating connectors and viscoelastic materials will dissipate energy, and under large earthquakes, they will dissipate energy. The cross-wave slotted steel plate dissipates energy together with the viscoelastic material through elastic-plastic deformation; the orthogonal wave-shaped slotted steel plate can be easily replaced after an earthquake through bolt connection; Buckling defects can also make full use of the energy dissipation capacity of the shear wave steel plate, integrating multiple energy dissipation modes and multiple energy dissipation directions.

Description

technical field [0001] The invention belongs to the field of anti-seismic and shock-absorbing civil engineering, and in particular relates to a graded energy-dissipating damper of orthogonal waveform slotted steel plates with viscoelastic materials. Background technique [0002] Under the action of wind vibration and strong earthquake, the traditional building structure relies on the structure itself to consume energy and provide deformation, and its ability is relatively limited. It is an economical and feasible method to reduce the wind vibration and earthquake response of the structure by setting the shock absorber to consume energy. It can improve the energy consumption capacity and deformation capacity of the building structure, and meet the requirements of building structure comfort and "not falling down after a big earthquake". [0003] The viscoelastic damper is a damper suitable for wind resistance. It can start to dissipate energy under small displacements, has go...

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Problems solved by technology

However, the current metal damper bears shear force and also bears large pressure or tension, especially when the structure undergoes vertical deformation. Therefore, under the combined action of multiple forces, the performance of the damper cannot achieve the expected effect; Under deformation, the steel plate of the damper cannot continue to bear the load after buckling, which may affect the seismic performance of the structure and the overall safety in severe cases

[0004] At present, the existing metal dampers are in an elastic state during small earthquakes and cannot play an energy-dissipating role.

Most of them are the yield energy consumption of moderate earthquakes, which leads to a limited increase in the yield bearing capacity of the damper during major earthquakes, and cannot play a greater role in energy consumption.

There is also a part of the metal damper that yields and dissipates energy only when it is subjected to a large earthquake, while it is generally in the elastic stage during a moderate earthquake and does not consume energy, so it cannot dissipate the earthquake during a moderate earthquake The role of energy, it can be seen that the existing pure metal dampers show limitations in the face of different magnitudes

[0005] At present, most dampers have a single stress form and energy consumption mode, and different types of dampers are required for different positions of different structures. The applicability of the same damper is obviously insufficient.

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