Extending arm truss energy dissipation and shock absorption system of diagonal bracing mechanism

Abstract

The invention discloses an extending arm truss energy dissipation and shock absorption system of a diagonal bracing mechanism. The extending arm truss energy dissipation and shock absorption system comprises an extending arm truss arranged between a core tube and a frame column, wherein the end of the extending arm truss is connected with a shock absorption mechanism formed by hinging two pairs ofmutually articulated connecting rods with a damper, one end of each of the two pairs of connecting rods is hinged to the outer end of the corresponding joint of the upper chords of the extending armtruss, the other end is hinged to the oblique lower portion of the frame column, and lower chords of the extending arm truss are located on the same horizontal plane. By satisfying the length and angle of the connection of a diagonal bracer and the damper and the relationship between the extension length of the extending arm truss from the core tube and the height of the extending arm truss, the amplification effect of an extending arm lever is achieved to improve the energy consumption efficiency of the damper. The displacement amplification factor of the extending arm truss energy dissipation and shock absorption system is about 10.0, has a good damping effect and is high in working efficiency.

Description

technical field [0001] The invention relates to the field of civil structural engineering, in particular to a scissors bracing 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, the 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 used 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 is used to judge the working efficiency of ...

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Problems solved by technology

However, after this setting, the overall stiffness of the structure becomes larger, resulting in shorter periods and increased earthquake action. At the same time, it will cause sudden changes in the internal force of the core tube, forming a weak layer, resulting in serious damage to the core tube, and great difficulty in later repairs.

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