A Calculation Method of Risk Degree of Ship Colliding with Bridge Considering Ship Size

Abstract

The invention discloses a method for calculating the risk degree of a ship hitting a bridge considering the scale of the ship. By establishing a plane rectangular coordinate system and using the Mercator projection method to convert the geographical position of the bridge and the ship according to the warning range of the bridge area, the rectangular coordinates are designed. The method of projecting the ship on the bridge axis along the channel direction uses the distance between the projected point and the center point of the pier to construct the risk algorithm of ship collision with the bridge. This algorithm fully considers the influence of ship size on the risk of ship collision with bridge, and uses the geometric analysis method to obtain the risk interval of ship collision with bridge from the horizontal direction, so that the algorithm is more in line with the actual situation. , and further proposed an active early warning and prediction strategy for ship collision with bridges. Through the above early warning strategy, the accuracy of early warning can be improved, the reliability and practicability of the system can be improved, and the common safety of bridges and ships can be 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 of a ship colliding with a bridge considering the scale of the ship. Background technique [0002] The reason why the calculation of the risk of ship collision with bridges is so important is because the number of ship collision accidents in my country is increasing, the super-span bridges across rivers and seas are constantly developing, and the potential risk of ships collision bridges is increasing. Traffic accidents, once they occur, often lead to serious consequences such as bridge damage, ship destruction, waterway obstruction, land traffic interruption and cargo leakage, and the cost of rebuilding bridges and clearing waterways is staggering. In this context, the bridge active anti-ship collision warning system came into being, and the risk of ship collision with bridge and its core algorithm are the key to the application of thi...

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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