新型柔性防撞装置在山区桥梁中的应用

山区河流航道狭窄,滩多流急,通航环境十分复杂,同时桥梁林立,存在较大的船撞风险。综合分析国内外现有防撞技术,依托重庆双碑大桥,围绕船撞风险、船撞力、防撞方案等方面对该桥进行全面研究;并通过详细的方案对比分析,表明新型柔性防撞装置可削减约55%的船撞力;且在碰撞过程中拨转船头、改变航向,有效地保护了船舶与大桥安全,能较好地适应局部流速大、比降大、水位落差大的河段,在山区桥梁中具有广阔的应用前景。

Application of the new flexible equipment for bridge anti-collisionin mountain bridges

The channel in mountain rivers which have many beaches and a big velocity is complex and narrow. Moreover, because of a large number of bridges, there is a huge possibility of ship-bridge collision. The studies on Shuangbei bridge in Chongqing are expatiated and analyzed by ship-bridge collision risk, ship-bridge collision force and anti-collision projects in this paper, based on the existing anti-collision technology at home and abroad. By analyzing the projects comparison in detail, it is found that the new flexible equipment can reduce about 55% ship-bridge collision force. At the same time, the bow is not only pushed away but also changed directions during the accident, which can protect the bridges and ships effectively. What is more, the equipment can adapt to the reach with a big velocity, gradient and a high head. In a word, the new flexible equipment has a broad application prospects in mountain bridges.