A Combined Wind and Earthquake Resistant Beam Energy Dissipator

Abstract

The invention discloses a combined windproof anti-shock coupling beam energy dissipation device. The energy dissipation device comprises two O-type metal dampers, one viscous-elastic damper and four bearing beams. The two O-type metal dampers and the viscous-elastic damper are arranged in parallel, and the viscous-elastic damper is arranged between the two O-type metal dampers. The combined windproof anti-shock coupling beam energy dissipation device is used for being arranged between coupled shear walls, the two ends of each O-type metal damper are connected with wall bodies respectively through the corresponding bearing beams, and the two ends of the viscous-elastic damper are connected with wall body embedded parts. The combined windproof anti-shock coupling beam energy dissipation device is simple in structure, easy to machine, good in energy consumption performance, convenient to construct and beneficial to repair and replacement after shocks.

Description

technical field [0001] The invention relates to the technical field of energy dissipation and shock absorption of building structures, in particular to a combined wind-resistant and anti-seismic coupling beam energy-dissipator. Background technique [0002] At present, combined shear wall structures are widely used in high-rise buildings. The span height of coupling beams in this type of structure is relatively small and the force is complex, and they often suffer damage to varying degrees in earthquakes. Although the "Technical Regulations for Concrete Structures of High-Rise Buildings" (JGJ3-2010) requires that the wall piers and coupling beams be designed according to the principle of "strong shear and weak bending", in actual engineering, the span height of coupling beams is often relatively small due to construction needs, and it is difficult to meet this design requirement. , making it prone to shear failure. Therefore, it has become an urgent problem to be solved in ...

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Problems solved by technology

[0003] Although some replaceable coupling beams have been developed, they set the coupling beam damper in the mid-span of the coupling beam. Commonly used dampers include viscoelastic dampers and metal dampers. Viscoelastic dampers are speed-dependent dampers, mainly by Viscoelastic materials can dissipate energy in shear deformation, although they can dissipate energy in wind shocks, small earthquakes, and moderate earthquakes, and have good fatigue performance, but the viscoelastic performance varies greatly with the ambient temperature and load frequency, and it is still Viscoelastic materials are mostly thin-layered, with limited shear deformation capacity, and are not suitable for large-deformation seismic structures.

Metal dampers are displacement-related dampers, which mainly rely on metal yield deformation to dissipate energy. They can meet the needs of large displacements and are almost not affected by the environment. Therefore, metal dampers can dissipate energy under moderate or large earthquakes, but Under the action of wind vibration or small earthquake, the metal damper usually can only provide stiffness to the structure. At this time, the metal damper has not yielded and is still in the elastic stage, unable to dissipate energy

It can be seen that the traditional coupling beam cannot meet the requirements of small earthquake (wind vibration) and large earthquake at the same time

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