Ship collision bridge risk degree calculation method considering ship scale

Abstract

The invention discloses a ship collision bridge risk degree calculation method considering ship scale, which comprises the following steps of establishing a plane rectangular coordinate system, performing rectangular coordinate conversion on the geographic positions of a bridge and a ship by adopting a Mercator projection method according to a bridge area channel warning range, and designing a method for projecting the ship on the axis of the bridge along a channel direction, and constructing a risk degree algorithm of ship collision bridge by using the distance between the projection point and the bridge pier center point. According to the algorithm, the influence of the ship size on the ship collision bridge risk degree is fully considered, the ship collision bridge risk degree interval is obtained from the transverse direction through a geometric analysis method, the algorithm is made to better conform to the actual situation, on the basis of the high-precision ship collision bridge risk degree, the ship collision bridge active early warning prediction strategy is further put forward, and through the early warning strategy, the accuracy of early warning is improved, the reliability and practicability of the system are improved, and the common safety of the bridge and the ship is guaranteed.

Description

technical field [0001] The invention relates to the field of bridge anti-collision safety, in particular to a method for calculating the risk degree of a ship collision with a bridge considering the size of a ship. Background technique [0002] The reason why the calculation of the risk of ship collision with bridges is so important is that the number of accidents of ship collision with bridges in our country is increasing continuously, the super-long-span bridges across rivers and seas are constantly developing, and the potential risk of ship collision with bridges is increasing. The accidents of ship collision with bridges are different from ordinary Once a traffic accident occurs, it will often cause serious consequences such as bridge damage, boat destruction, channel blockage, land traffic interruption and cargo leakage, and the cost of rebuilding bridges and dredging channel is very staggering. In this context, the bridge active anti-ship collision warning system came ...

AI Technical Summary

Problems solved by technology

[0004] The cause of the above-mentioned accidents is mainly that the ship yaws and hits the bridge. In most cases, it hits the pier, causing the bridge to collapse.

Prior to this, in the calculation of the risk of ship collision with bridges, the longitudinal collision between the ship and the bridge deck was considered more. It was analyzed from the aspects of human factors, navigation environment, management factors, ship factors, etc., and the ship factor was from the The course, traffic volume, ship speed, equipment and load capacity are considered; on the other hand, the risk of ship collision with the bridge is considered from the perspective of the bridge, and the risk of ship collision with the bridge is analyzed based on the life of the bridge and by studying the annual collision frequency and damage probability of the bridge. These two aspects have not taken into account the impact of ship size on the risk of ship collision with bridges, and there is also a lack of research and analysis of ship collision with bridge piers

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