1.In terms of ship collision force design standards, the calculation results of China and some European and American countries are relatively different, and the current code values are obviously low, resulting in the obvious weakness of the bridge pier collision resistance. The main factors that are not considered or unreasonable in China's regulations are: the span effect, the relative stiffness of the bridge, the stiffness of the bow, and the collision contact time of the bridge.
2.In terms of collision avoidance system: China's existing anti-collision measures mainly include artificial islands, pile groups, steel sleeves, etc., which occupy many waterways, have high costs, are easy to corrode, difficult to repair, and are easy to cause ship damage.
3.The contradiction between the bridge and the bridge is prominent, and the accident is frequent: the collision of the bridge and the ship has become one of the important disasters in the field of transportation, and it is urgent to study and solve the problem of reducing the collision disaster of the bridge and the bridgeThe composite collision avoidance facility can solve this series of problems very well.
4.Polluted waters: Collision accidents occurred on some ship bridges at home and abroad, resulting in the collapse of bridge decks and piers, which not only led to pollution of water flow, but also caused certain damage to economic and financial resources, and more importantly, human lives were seriously threatened.
5.Local damage to the bridge pier, affecting the life of the structure: When some ship collision accidents do not cause the bridge to collapse, but the bridge pier or cushion cap is often rubbed by the collision of the ship, there will also be a lot of potential safety hazards.
2023 Annual Stocktake