Seismic energy dissipation system for T-shaped lever mechanism extended arm truss

Abstract

The invention discloses a seismic energy dissipation system for a T-shaped lever mechanism extended arm truss. The seismic energy dissipation system comprises an extended arm truss arranged between acore tube and a frame column, wherein the end of the extended arm truss is connected with a damping mechanism hinged by a T-shaped lever and a damper; one end of the T-shaped lever is hinged with theouter end of the extended arm truss, and the other end of the T-shaped lever is hinged with the frame column; the lower end of the T-shaped lever is hinged with the damper; the extended end of the damper is hinged to the outer end of the extended arm truss. By meeting the relationship between the T-shaped lever and damper connecting length and height and the height of the extended arm truss and alength of an upper chord of the extended arm truss extending from the core tube, an amplification effect of the extended arm lever is achieved so as to improve the energy dissipation efficiency of thedamper. The displacement amplification factor of the seismic energy dissipation system can reach about 10.0. The system disclosed by the invention is excellent in damping effect and high in working efficiency.

Description

technical field [0001] The invention relates to the field of civil and structural engineering, in particular to a T-shaped lever mechanism outrigger truss energy dissipation and shock absorption system. Background technique [0002] With the development of my country's social economy and the acceleration of urbanization, super high-rise buildings have developed rapidly. Under the action of earthquake and wind load, the energy consumed by the building itself is relatively limited. At present, energy dissipation and shock absorption technology is generally used to dissipate or absorb the energy input by the earthquake into the structure. Dampers have been gradually applied in the design of super high-rise buildings because they can effectively improve the seismic performance and economy of structures. However, the arrangement of the damper has a great influence on its working efficiency. Usually, the displacement amplification factor f is used to judge the working efficiency ...

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Problems solved by technology

However, after this setting, the overall rigidity of the structure becomes larger, resulting in a shorter period and increased earthquake action. At the same time, it will also cause a sudden change in the internal force of the core tube, forming a weak layer, resulting in serious damage to the core tube, and making it difficult to repair later.

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