Metal Rubber Dampers for Fabricated Flexible Frame Joints

Abstract

The invention discloses a metal rubber damper used for the joint of an assembled flexible frame, which comprises a beam connecting plate (6) and a column connecting plate (7), and the beam connecting plate (6) is vertically fixed with a beam side shear The fan plate (8), the column connecting plate (7) is vertically fixed with the column side connecting fan plate (9), the beam side shearing fan plate (8) and the column side shearing fan plate (9) are provided with Corresponding arc-shaped chute (10), the positioning high-strength bolts (5) pass through the arc-shaped chute (10) to connect the shear fan plate (8) on the beam side and the connecting fan plate (9) on the column side. Metal rubber friction pads (12) are provided between the beam side shear fan plate (8) and the column side connecting fan plate (9). The design of the invention is reasonable, the displacement of the junction of the assembled flexible nodes is relatively large, the displacement is limited by the damper, and the energy consumption characteristics of the metal rubber in the damper are fully exerted, so that an ideal energy consumption effect can be achieved.

Description

technical field [0001] The invention belongs to the field of structural engineering, in particular to a metal rubber damper used for assembly-type flexible frame joints, which is suitable for structural vibration reduction control of civil engineering. Background technique [0002] When the building structure is disturbed or stimulated by the outside world, it will have a corresponding response when it receives energy input. The traditional post-cast prefabricated frame joints rely on the concrete crushing of joint beam members to produce plastic hinges to consume energy and provide deformation during earthquakes. The energy dissipation capacity is limited and it is difficult to repair after damage. At present, the reasonable and effective way is to use assembled flexible frame nodes and install damping and vibration reduction devices on the structure. Under the action of earthquakes, large displacements can be produced at the intersection of the assembled flexible joints, ...

AI Technical Summary

Problems solved by technology

Among them, the metal damper uses copper and other metals to dissipate energy through friction, with stable performance, not affected by ambient temperature, and low cost, but its threshold is difficult to control; under constant positive pressure, long-term contact of metal materials will cause cold bonding or cold solidification , often the energy consumption effect is not ideal

Viscoelastic dampers such as rubber have strong energy dissipation capacity and can work under large and small earthquakes, but their viscoelastic materials are greatly affected by temperature, and their energy dissipation capacity weakens when the temperature rises

Since the damper is often exposed to the external environment, the environmental adaptability of the damper is very critical. For example, the use of low-melting point damping materials such as ordinary rubber gaskets will often lead to complete failure of the damping device in high-temperature environments such as fire.

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