AN UNSEATING PREVENTION DEVICE OF BRIDGES FOR PREVENTING CORRUPTION AND SHOCK ABSORBTION DURING EARTHQUAKE

摘要

The present invention relates to a seismic device of a bridge, and more particularly, an excessive load on the bridge due to an earthquake prevents the top plate of the bridge from falling off the bridge and prevents falling out, and excessive horizontal load acts directly on the bridge device. It is a device that prevents the device from being damaged.;The present inventors bridge fall prevention device is largely composed of the buffer head 10, the upper cylinder 20, the slider 30, the lower cylinder 40, the piston rod 50 and the fixed plate 60.;The present inventors' fall prevention device of the bridge absorbs a large impact load generated on the bridge by an earthquake or the like in three stages to prevent the bridge from falling and breaking. In the present invention, the fall prevention device of the bridge resists most of the impact force by the viscous and compressive forces of the compressive viscous fluid, and since it has a very good linear characteristic, the dynamic behavior of the bridge during the earthquake matches well with what was predicted in the design, so that the accurate seismic resistance of the bridge Enable the design. This device is safe because there is no site where rupture occurs like a rubber film even if a very large lateral load is caused by a large earthquake.;Falling prevention, earthquake, shock absorption, compressive viscous fluid, linear characteristics