Novel friction pendulum support

Abstract

The invention relates to the technical field of bridge engineering, and particularly discloses a novel friction pendulum support which comprises a bottom plate, a locking mechanism, a reset device and a support assembly. The locking mechanism comprises an elastic clamping tooth part, a rack plate used in cooperation with the elastic clamping tooth part and a trigger locking device. The support assembly comprises a first curved surface sliding pair, a second curved surface sliding pair, a third plane sliding pair and an anti-shearing assembly used for restraining the first curved surface sliding pair. Under a normal working condition, the anti-shearing assembly restrains the first curved surface sliding pair. Under the earthquake working condition, the trigger locking device is locked, the rack plate and the elastic clamping tooth part interact to enable a third plane sliding pair to be restrained, meanwhile, the anti-shearing assembly is sheared off, and the first curved surface sliding pair is released. After the earthquake is finished, the reset device drives the elastic clamping tooth part to move towards one side close to the support assembly, the locking device is triggered to recover to the initial state, and reset is completed. Compared with a traditional speed locking type friction pendulum support, the novel friction pendulum support is better in economical efficiency and durability, and resetting can be effectively achieved.

Description

technical field [0001] The invention relates to the technical field of bridge damping, and more specifically relates to a novel friction pendulum support. Background technique [0002] The application of shock absorption and isolation technology in the field of bridge construction is mainly to use shock absorption and isolation devices to improve safety and reduce structural damage when encountering earthquakes. Friction pendulum anti-seismic isolation bearing is the mainstream anti-vibration isolation device at the present stage. Its structural principle is to meet the normal functional requirements of the bridge and at the same time adopt the mutual sliding between the friction pendulum surfaces similar to the pendulum principle to delay the structural period to achieve the anti-vibration effect. , and at the same time, the frictional energy consumption between the pendulum surfaces achieves the effect of shock absorption. [0003] The mainstream friction pendulum bearing...

AI Technical Summary

Problems solved by technology

[0003] The mainstream friction pendulum bearing is the structure described in JT / T927-2014 "Hyperboloid Spherical Isolation Bearing for Bridges". It has a simple structure and good manufacturability, and is widely used in highway bridges. Under working conditions, the height of the support will change, which will affect the stress system of the bridge; in this regard, a combined structure of speed locker + friction pendulum support is proposed (see patent CN201891073U for a friction pendulum lock support), by adding The planar sliding pair adapted to normal temperature displacement solves the problem of the height change of the support, and at the same time, it can identify earthquakes more accurately, but because the velocity locker needs to bear a large horizontal locking force (the design fusing force of the shear pin of the support), its The structure size is large, the economy is very poor, and the speed locker will have the problem of filling leakage when it is in service for a long time, and the durability needs to be improved

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