Adjustable Friction Pendulum Sliding Bearing

Abstract

The invention discloses a friction-force-adjustable friction pendulum sliding support which comprises two support seats, a sliding pendulum, a friction piece, an oil tank, a servo valve and a controller. One side surface, facing another support plate, of each support plate forms a curved face, the sliding pendulum is movable between the support plates, opposite side surfaces of the sliding pendulum form curved faces respectively, the sliding pendulum is provided with a cavity with at least one end open and used for containing hydraulic oil, and a tray is arranged at the opening of the cavity to close the opening of the cavity; the friction piece is arranged between the tray and the support plates and closely attached to the support plates, the oil tank serving as an oil source is connected with the sliding pendulum, the servo valve is connected with the sliding pendulum and the oil tank respectively to adjust connection and disconnection of the oil tank and the cavity, and the controller controls input and output of the hydraulic oil to adjust oil pressure in the cavity. According to the friction-force-adjustable friction pendulum sliding support, friction force can be adjusted continuously in real time according to structural response to reduce seismic response to greatest extent; the friction-force-adjustable friction pendulum sliding support is low in cost, wide in application range and high in adaptability.

Description

technical field [0001] The invention relates to the technical field of shock absorption and isolation in civil engineering, and more specifically, to a friction pendulum sliding support with adjustable friction force. Background technique [0002] At present, shock absorption and isolation technology has been widely used in building structures. In order to improve the ability of building structures to resist external loads such as earthquakes, energy-dissipating components are often added to the structure. It directly affects the effect of shock absorption and isolation. [0003] Common vibration-absorbing and energy-dissipating components include viscous dampers, friction dampers, and energy-dissipating supports, etc., and vibration-isolation energy-dissipating components include friction pendulums and vibration-isolation pads, etc. The friction force generated on the contact surface in the opposite direction to the sliding direction converts the vibration energy of the bu...

AI Technical Summary

Problems solved by technology

However, the friction damper and the friction pendulum in the related art belong to the passive control technology, which belongs to the category of narrow-band control, and cannot adjust its own dynamic characteristics in real time according to the characteristics of external disturbances and the response of the structure itself, and the control effect is greatly affected by external conditions. Clearly, the ability to adapt has significant limitations

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