A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a novel friction energy consumption damper which adopts the structure that four strip-shaped steel sheets are in two-two connection with each other through four pre-stressed bolts, so as to form four friction nodes, and the friction energy consumption damper of a quadrilateral structure. When pulling force or pushing force exerted on the strip-shaped steel sheets is larger than the maximum static friction force of a friction interface, sliding friction generates among connecting rods to dissipate energy. The friction energy consumption damper has the advantages that damping required by a structure can be adjusted by adjusting the pre-stressing force on each pre-stressed bolt and the number of dampers, so as to effectively reduce structure vibration; moreover, no additional rigidity is required by the friction energy consumption damper. Therefore, the natural vibration period of an original structure cannot be changed by mounting of the friction energy consumption damper, that is, increment of earthquake action is avoided. Compared with a viscoelastic damper, the friction energy consumption damper is low in impact caused by excitation frequency and temperature. The friction energy consumption damper can be mounted on various buildings and bridge structures, meets the requirements in the aspects of earthquake prevention and the like, is high in economical index and material availability, simple to machine, low in cost, convenient to replace, convenient and fast to apply, and suitable for large-scale popularization.
The invention discloses a novel friction energy consumption damper which adopts the structure that four strip-shaped steel sheets are in two-two connection with each other through four pre-stressed bolts, so as to form four friction nodes, and the friction energy consumption damper of a quadrilateral structure. When pulling force or pushing force exerted on the strip-shaped steel sheets is larger than the maximum static friction force of a friction interface, sliding friction generates among connecting rods to dissipate energy. The friction energy consumption damper has the advantages that damping required by a structure can be adjusted by adjusting the pre-stressing force on each pre-stressed bolt and the number of dampers, so as to effectively reduce structure vibration; moreover, no additional rigidity is required by the friction energy consumption damper. Therefore, the natural vibration period of an original structure cannot be changed by mounting of the friction energy consumption damper, that is, increment of earthquake action is avoided. Compared with a viscoelastic damper, the friction energy consumption damper is low in impact caused by excitation frequency and temperature. The friction energy consumption damper can be mounted on various buildings and bridge structures, meets the requirements in the aspects of earthquake prevention and the like, is high in economical index and material availability, simple to machine, low in cost, convenient to replace, convenient and fast to apply, and suitable for large-scale popularization.
Novel friction energy consumption damper
2015-12-30
Patent
Electronic Resource
English
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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