Automatic lifting type seaborne bridge pier collision preventing device

Abstract

The invention provides an automatic lifting type seaborne bridge pier collision preventing device and belongs to the technical field of water building safety protection. A soft pier face adjoining anddamping protection layer is installed on the outer wall of a bridge pier. An inner ring damping soft steel cylinder is connected to the outer wall of the soft pier face adjoining and damping protection layer. An outer ring collision preventing soft steel cylinder is arranged on the outer wall of the inner ring damping soft steel cylinder. End portion ring-shaped sealing plates are arranged at theupper ends and the lower ends of the outer ring collision preventing soft steel cylinder and the inner ring damping soft steel cylinder. The end portion ring-shaped sealing plates, the outer ring collision preventing soft steel cylinder and the inner ring damping soft steel cylinder define an area. According to the collision preventing device, the inflating capacity for increasing and floating aninflating outer bag body, the filling amount for filling damping sand layers and the arrangement number of light foam aluminum structure layers are set in a matched manner and determined according tothe actual situation, it is ensured that the overall ship collision preventing device body can float on and under the water surface and automatically ascend or descend along with rising and falling of torrents, and therefore the position of protected piers changes along with the water level.

Description

technical field [0001] The invention belongs to the technical field of water building safety protection, and in particular relates to an automatic lifting anti-collision device for offshore bridge piers. 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. Relevant studies have been carried out at home and abroad, and the ship-bridge collision theory has been proposed, and some bridge protection facilities have been designed. The fundamental purpose of bridge anti-collision is to prevent the structural damage of the bridge caused by the collision force of the ship exceeding the design bearing capacity of the bridge pier on the one hand, a...

AI Technical Summary

Problems solved by technology

Among them, the anti-collision box or double-wall anti-collision steel box is used to block the ship, consume the kinetic energy of the ship, slow down the ship, delay the impact, and weaken the impact force of the ship on the pier; The kinetic energy of the ship is huge, and the anti-collision box, double-wall anti-collision steel box and flexible energy-dissipating anti-collision device can only prevent small ships due to the limited elastic buffer of the material. For ships with slightly larger mass or higher speed, It cannot absorb the huge kinetic energy of the ship very well, its energy dissipation and anti-collision effects are not good, it is easy to be damaged, potential safety hazards still exist, and its service life is short. It needs to be replaced immediately after being damaged. It is a giant, weighing thousands of tons, difficult to install, easy to corrode after being scratched, and affecting the service life

Therefore, the existing protective devices for bridge piers need to be further improved. At present, anti-collision bridge piers are a very common marine traffic safety facility, and have been widely used in some dangerous areas. In the event of a collision, setting up an anti-collision pier or pier anti-collision installation kit with cushioning performance can greatly buffer the huge impact force generated by the impact, thereby greatly reducing the serious consequences of traffic collision accidents. Under the action of the impact force, the anti-collision bridge piers with strong, strong impact resistance and good cushioning performance are very necessary infrastructure for marine traffic safety. In the past two decades, nearly a hundred bridges across rivers and seas have been built in China. Many of them are super projects, but the impact of objects such as ship hulls on bridge piers has caused heavy casualties, property losses and other incidents from time to time, which shows that there are still deficiencies in the anti-collision design and anti-collision measures of bridge piers in marine traffic, and the research on anti-collision of bridge piers in China has started It is still relatively late, and the attention was not paid enough in the early stage. Many anti-collision design theories and calculation methods refer to foreign research results. Therefore, it is particularly critical to develop and design effective anti-collision pier facilities, so that the bridge will not be damaged and the hull will not be damaged. , The design purpose of the strong enough piers plays an important role in the development of China's maritime traffic in the national economy and society

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