Self-reset friction damper

Abstract

The invention relates to the technical field of civil engineering earthquake resistance and disaster prevention, in particular to a self-reset friction damper. An energy dissipation assembly and a reset assembly of the damper are mounted in an outer sleeve in a sleeved mode, static friction force exists between the energy dissipation assembly and the outer sleeve, and the energy dissipation assembly and the reset assembly are coaxially connected through a connecting shaft. When the energy dissipation assembly is subjected to the effect of outer force to slide in the axial direction of the connecting shaft, the static friction force can be overcome, and the reset assembly can be pushed to store energy; the reset assembly has preset elastic potential energy and is used for utilizing the elastic potential energy to drive the energy dissipation assembly to reversely move and reset after the energy dissipation assembly slides, the energy dissipation assembly with the stored energy is resetthrough the reset assembly, thus large residual deformation generated by an existing friction damper after an earthquake is effectively reduced and even eliminated, the self-reset friction damper hashigh energy dissipation and the self-reset characteristic, and both the friction force and restoring force can be adjusted; and meanwhile, full-prefabricated machining and fabricating can be implemented, demounting can be conducted in the using period, overhauling and maintenance are easy, and the self-reset friction damper can be replaced after the earthquake.

Description

technical field [0001] The invention relates to the technical field of earthquake resistance and disaster prevention in civil engineering, in particular to a self-resetting friction damper. Background technique [0002] With the frequent occurrence of earthquake disasters in recent years, there are new requirements for building anti-seismic in construction engineering. Traditional building anti-seismic structures consume earthquake energy through the deformation of the building's own components, but it will cause permanent damage to the building's own structure and have a greater impact on the safety of the building in the later use. By adding a friction damper to the building's anti-seismic system, the damper can absorb most of the seismic energy, effectively reducing the damage to the main structure of the building caused by the earthquake, and playing an important role in improving the overall anti-seismic performance of the building. [0003] The friction damper is an e...

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Problems solved by technology

[0004] However, the relatively sliding part of the friction damper will produce a large parallel displacement after the earthquake, resulting in a large residual deformation of the damper, which cannot return to the original state after the earthquake, which will increase the maintenance and maintenance of the structural system after the earthquake. reconstruction cost

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