Intelligent early warning ship collision prevention graded buffering system and energy consumption design method

Abstract

The invention relates to the field of bridge protection, and discloses an intelligent early-warning ship-collision-prevention graded buffering system and an energy dissipation design method.The intelligent early-warning ship-collision-prevention graded buffering system comprises a bridge pier, a first-stage anti-collision structure and a second-stage anti-collision structure, the bridge pier is wrapped with the second-stage anti-collision structure, and an ultrasonic monitor for monitoring coming ships is installed on the bridge pier; the first-stage anti-collision structure comprises a support, a flexible armor, underwater energy consumption devices, a supporting rope and an anchor pulling rope, the support is fixedly arranged on the pier, the supporting rope penetrates through the flexible armor, the two ends of the supporting rope are connected with the underwater energy consumption devices, and the flexible armor is located on the outer side of the second-stage anti-collision structure and tightened on the support through the supporting rope; the two ends of the anchor pulling rope are installed on the underwater energy dissipation device and the pier respectively. By arranging two-stage protection, collision of ships with the tonnage being 500 tons or below can be completely absorbed by the first-stage anti-collision structure, collision of ships with the tonnage being 500 tons or above can be dissipated through the first-stage anti-collision structure, the second-stage anti-collision ring is used for buffering and stopping, the first-stage anti-collision structure is easy to recover, and damage to the whole system is avoided.

Description

technical field [0001] The invention relates to the field of bridge protection, in particular to an intelligent early warning and anti-ship collision grading buffer system and an energy consumption design method. Background technique [0002] With the construction of large-scale bridges in China, the problem of anti-ship collision of bridges, especially bridge piers, needs to be effectively solved. The protection of large bridges is related to social public safety and is the guarantee of the safety of people's lives and property. Traditional bridge anti-collision devices often use pier outsourcing boxes. The form of plate steel structure, or the way of simply blocking cables and adding energy consumers, and has little early warning function. [0003] The following issues still exist: (1) Protective devices without monitoring and early warning functions, insufficient disaster information control capabilities, and untimely disaster perception. [0004] (2) The protection fo...

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Problems solved by technology

(1) Protective devices without monitoring and early warning functions, insufficient disaster information control capabilities, and untimely disaster perception

[0004] (2) The form of protection is single, and the same mode is used to intercept ships of different tonnages. Traditional devices will cause great damage to the hull, protective structures and bridges after collisions at small and medium energy levels. Structural restoration is difficult, and emergency disaster prevention resilience is poor

[0005] (3) For the method of single arresting cable or arresting cable plus energy dissipating anchor, its energy consumption mode is unstable, and due to the complex condition of underwater rock and soil, it is very easy to Failure to move the anchor, resulting in excessive collision force and device damage

[0006] (4) Traditional energy dissipators often use friction and plastic deformation to dissipate energy, which cannot be recycled and is not easy to restore

[0007] (5) The working tension of traditional energy consumers is fixed. Once a single energy consumer is started, it maintains the same working tension for collisions at different speeds, and there is no self-adaptation characteristics, leading to greater internal force under low-velocity and small-energy-level collisions

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