Composite anti-collision cofferdam for bridge bearing platform

Abstract

The invention provides a composite anti-collision cofferdam for a bridge bearing platform. The composite anti-collision cofferdam comprises a first buffer ring sleeving the bearing platform, a second buffer ring sleeving the first buffer ring and a plurality of elastic pieces arranged between the first buffer ring and the second buffer ring, wherein the first buffer ring comprises a first shell made from a fiber reinforced plastic material and a first energy dissipation material filling the first shell, and the second buffer ring comprises a second shell made from a fiber reinforced plastic material and a second energy dissipation material filling the second shell. By virtue of the composite anti-collision cofferdam for the bridge bearing platform, the weight of a protection device of the bridge bearing platform is greatly lowered, and materials are saved; the composite buffer rings are high in deformation buffering capability, thereby lowering damage to a ship and a pier to the greatest extent when the large-tonnage ship hits the bearing platform, and the elastic pieces are capable of further reducing the impact of the ship; the composite buffer rings are high in corrosion resistance and long in service life; the composite anti-collision cofferdam is simple in structure and convenient to install and implement, and a small quantity of materials are used.

Description

technical field [0001] The invention relates to the technical field of water building safety protection, in particular to a composite anti-collision cofferdam used for bridge caps. Background technique [0002] With the continuous development of the transportation industry, a large number of cross-sea and cross-river bridges are constantly being built. Most of the rivers and seas where such bridges are located are busy waterways, and the conditions such as currents, waves, wind and waves are complicated, and the bridge inevitably bears a certain risk of ship collision. In non-conditions, when a ship collides or hits a bridge pier or anti-collision pier, the momentum of a ship with a certain speed is very large. According to the momentum theorem: mv1-mv2 = FΔt, Δt is instantaneous, so its impact force is huge , Damaged bridges occur from time to time. When the pier of the bridge is continuously rubbed by the ship, the huge kinetic energy of the ship is converted into th...

AI Technical Summary

Problems solved by technology

When the ship collides or hits the pier, the kinetic energy of the ship involved in the accident is huge. The anti-collision box, double-wall anti-collision steel box and flexible energy-consuming anti-collision device can only prevent small ships due to the limited elastic buffer of the material. For ships with a slightly larger mass or higher speed, the huge kinetic energy of the ship cannot be well absorbed, and its energy dissipation and anti-collision effects are not good, and it is easy to be damaged, and potential safety hazards still exist, and its service life is also short. It needs to be replaced immediately. The anti-collision box is welded by steel plates. It is a huge object, weighing thousands of tons. It is not easy to install, easy to corrode after being scratched, difficult to arrange, and occupies the position of the waterway.

Images