Lead core tenon limiting damper system

Abstract

The lead core tenon limit damper system can simultaneously prevent the beam body from falling longitudinally, transversely and vertically in an earthquake, and can also play a role in shock absorption and energy consumption. All components are replaceable and modular The product is convenient for post-earthquake repair and replacement. It includes a steel tenon and a steel snap. The steel tenon includes a head, a buckle fixing section, a tapered section and an anchor plate from top to bottom, wherein the tapered section has a tapered cavity, and the tapered cavity is filled with a lead core. The outer end of the steel tenon is engaged with the buckle fixing section, and the inner end thereof is a bottom plate. The steel tenon and the steel buckle are arranged on the outside of the pad stone in the direction of the transverse bridge. The steel tenon is fixed and installed on the top of the pier through the high-strength bolt assembly passing through the mounting hole on the anchor plate, and the steel tenon is fixed on the top of the pier. The buckle is fixedly installed on the side wall of the beam body through the high-strength bolt assembly passing through the mounting hole on the bottom plate.

Description

technical field [0001] The present invention relates to bridges, in particular to a lead core tenon limit damper system, which is mainly used in bridges with relative displacement between piers and girders such as simply supported beams, continuous beams (rigid structures), cable-stayed bridges, etc., during earthquakes, Under impact loads such as vehicles (trains), it plays the role of vertical, horizontal, and vertical three-way limit and shock absorption (vibration) energy dissipation, so as to restrain the vibration of the beam body and reduce the distance between the beam body and the beam body, and the beam body and the pier. collision between. Background technique [0002] Simply supported girder bridges, continuous girder (rigid frame) and other girder bridges are the most commonly used bridge types in traffic engineering. The girder drop caused by excessive relative displacement between the girder part and the abutment is the primary cause of bridge collapse in eart...

AI Technical Summary

Problems solved by technology

However, these current anti-drop beam devices have certain limitations, such as: it is difficult to realize vertical, horizontal, and vertical three-way limit; energy consumption and limit function are separated; energy dissipation capacity is limited; conventional friction pendulum bearings, The shock-absorbing and isolating measures such as hyperboloid spherical shock-absorbing and isolating bearings will fail when the vertical earthquake is strong; the cost is relatively high

In recent years, some scholars have also studied the shock-absorbing tenon, but it has no damping effect.

In addition, some new anti-fall beam devices use some complex structures or new materials, resulting in high costs and cannot be popularized and applied; the process is complicated, the repair after the earthquake is difficult, and the replaceability is poor.

[0003] In addition, locking devices are commonly used in the longitudinal vibration control of beams introduced under impacts such as train braking and traction, but the locking devices have limitations such as high cost, oil leakage, and relatively small damping ratio.

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