One-way movement three-layer composite damping device

Abstract

The invention discloses a one-way movable three-layer composite damping device, which comprises an upper seat plate, an upper pendulum, a block assembly, a connecting hinge shaft, a ball pendulum and a lower pendulum. The upper pendulum and the upper seat plate slide relatively to form a plane The sliding layer; the relative rotation between the upper pendulum and the ball pendulum forms a rotating layer; the relative swing between the ball pendulum and the lower hem forms a swing layer; the upper seat plate and the upper pendulum, the upper pendulum and the ball pendulum, and the ball pendulum and the lower hem constitute three layers Composite structure; the block assembly is arranged on both lateral sides of the upper seat plate, the upper part of the block assembly is separated from the upper seat plate, and the lower part of the block assembly is fixed by connecting the hinge shaft and the hem. During normal operation, the ball pendulum does not rotate, and there is no vertical displacement at the end of the beam, which is beneficial to the stability of the bridge; during an earthquake, the upper seat plate can transition smoothly without impact; when the horizontal shear force is greater than the shear force of the shear pin, the shear force When the pin is sheared and fails, the block assembly no longer limits the lateral direction of the upper seat plate, and the entire shock absorbing device can move bidirectionally to realize the free swing of the entire shock absorbing device.

Description

technical field [0001] The invention relates to a device capable of effective shock absorption during an earthquake, in particular to a one-way movable three-layer composite shock absorption device, which belongs to the field of shock absorption technology. Background technique [0002] At present, bridge damping devices with shock absorption mainly include friction damping devices, mild steel damping devices, rubber damping devices, etc. Friction damping device is one of the common shock absorbing devices. It has the characteristics of large vertical bearing capacity, obvious energy consumption, strong reset function, large rotation angle and large displacement. The mild steel damping device has a good shock absorption effect, but its post-earthquake restoration is poor; the rubber damping device has a good shock absorption effect and post-earthquake restoration, but the rubber is easy to age and has a short service life. Contents of the invention [0003] The object...

AI Technical Summary

Problems solved by technology

Friction damping device is one of the common shock absorbing devices. It has the characteristics of large vertical bearing capacity, obvious energy consumption, strong reset function, large rotation angle and large displacement. Secondary stress generated by the body; mild steel damping device has better shock absorption effect, but poor reset after earthquake; rubber damper has good shock absorption effect and reset after earthquake, but rubber is easy to age and has a short service life

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