Floating two-stage buffer anti-collision system

Abstract

The invention discloses a floating two-stage buffer anti-collision system, and belongs to the technical field of bridge ship collision prevention systems. The floating two-stage buffer anti-collision system comprises a floating body, connecting pieces and dampers, wherein the floating body is arranged around a bridge pier; the dampers are arranged on the floating body at intervals; the dampers are connected with the bridge pier through the connecting pieces. According to the floating two-stage buffer anti-collision system disclosed by the invention, the floating body is arranged around the bridge pier, the dampers are distributed and arranged on the floating body, after a ship collides with the floating body, energy can be buffered and dissipated by using the dampers, and can also be buffered and dissipated by using the deformation of the floating body structure, the action time and distance of the floating body and a ship can be prolonged through two-stage buffer energy consumption, the system is beneficial for changing the motion direction of the ship, the force applied to the bridge pier is greatly reduced, the bridge pier can be protected, and protection for the ship is also facilitated at the same time; the floating body is arranged around the bridge pier and the floating body and the bridge pier are spaced at an interval, and furthermore, the installation and maintenance of the anti-collision system are facilitated.

Description

technical field [0001] The invention belongs to the technical field of bridge ship anti-collision systems, in particular to a floating two-stage buffer anti-collision system. Background technique [0002] The anti-collision facilities of bridge piers in the prior art mainly include the following two types: the first type is the attached anti-collision facilities installed on the piers, and there are relatively many engineering applications, mainly using the structural deformation of the anti-collision facilities to consume the kinetic energy of the ship , prolong the impact time and reduce the impact force of the ship; the second type is a separate anti-ship collision facility installed in front of the pier, which has relatively few engineering applications, such as independent anti-collision piers, artificial islands and mooring buoys. [0003] However, due to the limited thickness of the attached anti-collision facilities in the first category, the deformation of the mater...

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Problems solved by technology

[0003] However, due to the limited thickness of the attached anti-collision facilities in the first category, the deformation of the material is even more limited, and the pier will still be subjected to a large force. The maximum impact force can usually be reduced by about 30%. If the thickness of the anti-collision facilities is increased, the impact force will be further reduced, but the decline is usually difficult to exceed 50%. It is difficult to repair after damage, which is not conducive to protecting the accident ship, and will also increase the wave and current force on the pier

In addition, for the bridge piers that have been built, when installing the attached anti-collision facilities, they need to be fixed on the bridge piers, which may also affect the durability of the bridge piers

[0004] For the second type of fixed anti-ship collision facilities such as independent anti-collision piers and artificial islands, not only the construction and installation costs are high, but also it is not conducive to protecting accident ships; for mooring floating bodies, gravity anchors can be used to move anchors to consume energy. It is beneficial to protect the accident ship, but because the gravity anchor may fall into the mud and cannot move the anchor, it is difficult to continue to play a role

In addition, in order to protect the bridge pier, the distance from the anti-collision facilities to the bridge pier is limited, usually only tens of meters, and the mooring floating body of the anchor-walking energy dissipation type is difficult to meet the requirements of blocking large ships

[0005] A mooring anti-ship collision system (patent application No. 2014105761973) is composed of a floating body, main anchor, main anchor cable, damping unit, etc. The floating body is arranged in front of the pier, and the energy-dissipating cable is stretched and broken to provide resistance and Consume the kinetic energy of the ship, and finally prevent the ship from moving towards the bridge position. It can effectively prevent the ship from hitting the front of the pier from a direction approximately perpendicular to the axis of the bridge. It is suitable for piers with non-navigation holes, but it is difficult to prevent ships from hitting the side of the pier obliquely, so it is not suitable for piers with navigation holes

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