Analysis Of Two Side Large Cantilever And Large Span Truss Structure With The Viscous Damper Setting

Truss structure because of its reasonable mechanical characteristics, superior economic and beautiful appearance, the modern gymnasium, exhibition hall, hall, terminals, stations, has been widely used in the building, won the favor of the construction engineer all over the world. In a truss structure are often produced during the earthquake of irreparable deformation, direct damage or partial collapse structure as a whole, what reason is structures absorb a large amount of seismic energy, lead to yield structures into the elastic-plastic state and even damage. Traditional anti-seismic structure is usually through strengthening structure itself to improve the performance of structures to resist earthquake damage. Damper is a common and very versatile wall-beam, through the appropriate place and proper arrangement in structure, set the damper in at the time of the earthquake can prevent structure due to absorb a large number of seismic energy unable to repair large deformation and failure, and improves the seismic performance of structures. This paper studies the large-span truss structure set seismic performance analysis of viscous dampers.This paper first introduces some commonly used way of structural vibration control, damping energy consumption concept, several common damper and the finite element software Sap2000, and then introduces the basic theory and several kinds of damper seismic analysis method. This article is based on a large station at both ends of the large cantilever large-span truss structure model as the research object. Model is firstly established by finite element software Sap2000, the modal analysis under no control analysis of the inherent attributes, and then to set the damper of truss structure time history analysis method is adopted to improve the seismic performance analysis respectively. In reference to the existing structure of large span truss vibration data and multiple trial results, ultimately determines the structure of the damper layout (quantity and arrangement of parts),finally got a big shock absorption effect. On this basis, adjust the impact energy dissipation damping effect is one of the most obvious damper parameters were analyzed and the optimal choice. Finally concluded on both ends of the large cantilever large-span truss structure in the viscous damper is set up when the seismic energy dissipation performance is very outstanding. For the future similar design and deep research provides experience.