Anti-collision device for bridge pier

Abstract

The invention discloses an anti-collision device for a bridge pier. The anti-collision device comprises an inner buffering cushion, a rotating assembly and an outer anti-collision assembly which are coaxially arranged from inside to outside. The pier is tightly wrapped by the inner buffering cushion, the outer anti-collision assembly can rotate around the axial central line through the rotating assembly, the rotating assembly comprises an inner ring, an outer ring and spherical rolling bodies evenly distributed between the inner ring and the outer ring, the outer ring can rotate relative to the inner ring, and the inner ring can be matched with the inner buffering cushion in a relatively rotating mode. Not only can the aims of prolonging stress time and reducing impact force borne by the pier be achieved through the outer anti-collision assembly, but also the outer anti-collision assembly can rotate around the axial central line through the rotating assembly when the pier is impacted, so that the impact force caused by objects of ships and the like is guided to shift away from the pier, the remaining huge impact force after buffering of the outer anti-collision assembly is shifted away as much as possible, and safety of a bridge is greatly improved. In addition, the inner ring of the rotating assembly further can rotate relative to the lateral face of the outer circumference of the inner buffering cushion to generate a secondary rotating effect, and the effect of shifting the impact force away from the pier is further improved.

Description

technical field [0001] The invention relates to the field of bridges, in particular to an anti-collision device for bridge piers. Background technique [0002] With the rapid development of transportation, a large number of bridges have been built due to their characteristics of crossing rivers, facilitating cross-strait connections, and shortening road mileage. At the same time, the development of waterway transportation industry has also increased the number and tonnage of ships. These two factors increase the probability of ships hitting bridges, threatening the safety of bridges and the lives of people on bridges. For example: the 2007 "Jiujiang Bridge 6-15 ship collision accident" caused the bridge to collapse and 9 people died. [0003] In order to improve the safety of the bridge after the ship hits the bridge, there are mainly two existing methods. One is to strengthen the resistance of the pier itself, and the other is to install anti-collision devices on the pier....

AI Technical Summary

Problems solved by technology

It is unrealistic to resist the large impact force brought by objects such as ships only by setting and changing the buffer material, because the impact force brought by large objects such as ships usually reaches tens to hundreds of MN. Relying on cushioning materials to resist a huge impact is tantamount to hitting a stone with a pebble

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