Bent steel truss coupling beam with U-shaped damper and capable of being quickly restored after earthquake

Abstract

The invention provides a bent steel truss coupling beam with a U-shaped damper and capable of being quickly restored after an earthquake. The bent steel truss coupling beam comprises the U-shaped damper. The bent steel truss coupling beam consumes energy by utilizing the U-shaped damper on the basis of a common steel truss coupling beam. The U-shaped damper comprises a U-shaped upper cover plate,a U-shaped lower cover plate and bolts. The bent steel truss coupling beam is simple in structure, convenient to construct and easy to disassemble. Under a small earthquake, the bent steel truss coupling beam with the U-shaped damper does not generate plastic deformation, is equivalent to the common steel truss coupling beam and provides vertical rigidity for the structure; and under a large earthquake, after the yield load of the U-shaped damper is reached, the damper generates plastic deformation, and therefore energy is consumed. Most energy in the earthquake is consumed by the U-shaped damper. According to the bent steel truss coupling beam with the U-shaped damper and capable of being quickly restored after the earthquake, under the action of the earthquake, the strength is not degraded, damage is avoided, only the U-shaped cover plates of the damper need to be checked and replaced after the earthquake, and the bent steel truss coupling beam has the advantages of being low in post-earthquake repairing cost and capable of being used in time.

Description

technical field [0001] The invention belongs to the technical field of energy dissipation and shock absorption in civil engineering, and in particular relates to a curved steel truss connecting beam with a bending damper for quick recovery after an earthquake. Background technique [0002] The coupling beam is an important seismic energy-dissipating component in the shear wall system and the frame-shear wall system. It can effectively resist the overturning moment by ensuring the force transmission between adjacent wall piers. Reinforced concrete coupling beams are fundamentally restricted in performance due to material factors, so steel structure coupling beams with excellent energy dissipation and ductility properties have been proposed in recent years. On this basis, the steel truss connecting beam not only has the advantages of steel connecting beams, but also has the advantages of saving steel, flexible arrangement of rods, and convenient replacement. When the span hei...

AI Technical Summary

Problems solved by technology

When the span height of the steel truss coupling beam is relatively small, the steel truss coupling beam mainly undergoes shear deformation. However, since these deformations are irreversible, it is difficult to repair after the earthquake

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