A bridge pier anti-collision device with super large expansion and contraction

Abstract

The invention discloses an ultralarge-expansion-amount pier anti-collision device. The outer side of a pier (1) is provided with an integral annular pontoon group, the integral annular pontoon group is provided with an expansion device, the expansion device is provided with a counterweight (36) capable of controlling a tensile displacement amount, the integral annular pontoon group comprises a first pontoon group (21) and a second pontoon group (22), the inner sides of the first pontoon group (21) and the second pontoon group (22) are provided with a plurality of energy absorbing damping elements, and the plurality of energy absorbing damping elements are attached onto the outer side surface of the pier (1). Since the retractable integral annular pontoon group is provided and the corresponding expansion device with the counterweight is also provided, the adjustment of the expansion amount of the integral pontoon group is facilitated; in addition, the energy absorbing damping elements can better adapt to the shape of the outer side of the pier and can play a role of buffering and energy dissipation; the structure is simple and practical, the cost is low, the operation is convenient to perform and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of water building safety protection, in particular to a bridge pier anti-collision device with a super large telescopic amount. Background technique [0002] In recent years, with the upgrade of the channel, the tonnage of navigable ships has increased significantly, and the traffic volume of ships has also increased significantly. Once the ship loses control or deviates from the channel and hits the bridge, it is very easy to cause vicious accidents such as bridge collapse and ship capsizing, with disastrous consequences. [0003] The rivers in the western mountainous area have the characteristics of large water level fluctuations and turbulent water flow, especially in the hub reservoir area, as the reservoirs store and release water, the water level fluctuations are even greater. For bridges crossing mountainous rivers, or bridges located in hub reservoir areas, in order to ensure sufficient clearance for...

AI Technical Summary

Problems solved by technology

[0005] Although the anti-collision pontoon can automatically rise and fall with the water level, and can meet the anti-ship protection problem of bridge piers under different water levels, but for some piers with large linear changes and large changes in the circumference of the pier with water level changes In other words, conventional equal-section anti-collision buoys or small-range retractable anti-collision buoys are not applicable

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