Viscous, elastic and anti-buckling brace combined damper

Abstract

The invention discloses a viscous, elastic and anti-buckling brace combined damper. The damper sequentially comprises a steel plate in the center, an annular inner steel cylinder and an annular outer steel cylinder from inside to outside, the steel plate is sleeved with the annular inner steel cylinder, the annular inner steel cylinder is sleeved with the annular outer steel cylinder, the portion between the annular inner steel cylinder and the annular outer steel cylinder is filled with a viscous and elastic material layer, and the annular inner steel cylinder, the viscous and elastic material layer and the annular outer steel cylinder are connected in a high-temperature high-pressure vulcanization mode. The damper further comprises an upper anchoring plate and a lower anchoring plate which are opposite to each other. The steel plate is composed of an upper end, a buckling section and a lower end, two grooves I are symmetrically formed in the upper end in the horizontal direction, the upper anchoring plate is fixedly embedded in the grooves I, two grooves II are symmetrically formed in the lower end in the horizontal direction, the lower anchoring plate is embedded in the grooves II, the lower anchoring plate can slide up and down in the grooves II relative to the grooves II, the annular outer steel cylinder is fixedly connected with the lower anchoring plate, and the annular inner steel cylinder is fixedly connected with the upper anchoring plate. The diameter of the annular inner steel cylinder is 1-3 mm larger than the horizontal length of the steel plate.

Description

technical field [0001] The invention relates to a damper, in particular to a viscoelasticity-buckling-resistant support composite damper, which belongs to the technical field of energy dissipation and shock absorption. Background technique [0002] Both viscoelastic dampers and anti-buckling braces are the most commonly used dampers in civil engineering. The viscoelastic damper is a kind of damper suitable for anti-wind vibration and small earthquake. It can start to dissipate energy under small displacement, and has good fatigue performance and energy dissipation performance. The anti-buckling brace is a damper suitable for resisting moderate or large earthquakes. Under large displacements, it can dissipate seismic energy through tensile and compressive yielding, which can effectively reduce the damage of the main structural components. The lower anti-buckling braces can only provide lateral stiffness to the structure and cannot dissipate energy. In order to solve the pro...

AI Technical Summary

Problems solved by technology

The anti-buckling brace is a damper suitable for resisting moderate or large earthquakes. Under large displacements, it can dissipate seismic energy through tensile and compressive yielding, which can effectively reduce the damage of the main structural components. Lower anti-buckling braces can only provide lateral stiffness to the structure and cannot dissipate energy

In order to solve the problem of energy dissipation under small earthquakes and wind vibrations, the yield section of the support can be designed to be shorter, so that the steel core elements can dissipate energy under small strains, but under moderate or large earthquakes, the steel core elements If the strain is too large, the number of cycles is reduced, and the low-cycle fatigue performance cannot be satisfied, so that the support will fail prematurely under the action of moderate or large earthquakes

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