Friction pendulum type inerter shock isolation system

Abstract

The invention relates to a friction pendulum type inerter shock isolation system used in the field of civil engineering and energy infrastructures. The friction pendulum type inerter shock isolation system comprises a friction pendulum unit, an inerter subsystem unit and an installation unit. According to the friction pendulum type inerter shock isolation system, an energy disposal mechanism of the system is established for a structural system subjected to an external action; firstly, external energy input is reduced by isolating the structure from the ground through the friction pendulum unit; secondly, energy is stored in the form of kinetic energy through the rotation of an inerter in the inerter subsystem unit; and the energy is dissipated through a friction pendulum friction sliding mechanism and an eddy current unit. The friction pendulum type inerter shock isolation system utilizes the arrangement of the inerter subsystem unit, the energy absorption efficiency and energy consumption efficiency of the friction pendulum type inerter shock isolation system are improved while the physical quality of the shock isolation system is not significantly increased, the displacement of ashock isolation layer can be effectively controlled, and the inertial characteristics of an upper structure can further be effectively adjusted, so that the control over high-order vibration of the structure is realized, and the dynamic response of the structure is significantly reduced. The friction pendulum type inerter shock isolation system has the characteristics of high energy consumption efficiency, high robustness and the like, and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of energy consumption reduction and shock isolation of civil engineering structures, and in particular relates to a friction pendulum type inertial shock absorption system. Background technique [0002] Seismic isolation technology installs seismic isolation devices at the base or a certain position of buildings and structures to isolate or dissipate seismic energy, so as to avoid or reduce the transmission of seismic energy to the upper structure, reduce the vibration response of the structure, and make the building only slightly move. and deformation, so as to ensure the safety of buildings during earthquakes. The friction pendulum bearing is a common type of shock-absorbing and isolating bearing based on dry friction sliding. Under external action, the friction pendulum bearing uses frictional sliding to isolate the upper structure from the ground and prolong the life of the friction pendulum seismic-isol...

AI Technical Summary

Problems solved by technology

However, such devices often have problems such as low frictional energy consumption efficiency (especially when the deformation of the seismic isolation layer is small), excessive deformation of the seismic isolation layer, and insufficient self-resetting ability caused by friction.

Images