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本文介绍了一种新型的桥梁防船撞拦阻系统,以及该系统应用于平潭跨海大桥时所进行的实船拦阻实验。该防船撞拦阻系统由浮体、限载式拦索及锚链等组成,可以在船舶驶入时自动翻转并通过拖曳损耗船体动能最终保护桥梁安全。针对实船实验较为恶劣的环境,利用单目视觉测量技术,通过高速影像记录、数字图像处理及力学模型分析得到了实验船在受阻拦条件下的运动及受力,进而评估船舶进入阻拦区后阻拦系统的工作过程及工作效能。实验结果表明该技术能有效地对桥梁进行撞击防护。
This paper introduces a new type of bridge anti-collision blocking system, and the system used in Pingtan Sea Bridge when the real ship blocking experiments. The anti-collision block system consists of a floating body, a limited load barge and an anchor chain, which can automatically turn over when the ship enters and ultimately protect the bridge safety by dragging the kinetic energy of the hull. Aiming at the harsh environment of the real-ship experiment, using the monocular vision measurement technology, the motion and force of the experimental ship under the blocked condition are obtained through high-speed image recording, digital image processing and mechanical model analysis, Block the system’s work process and work efficiency. Experimental results show that the technology can effectively strike the bridge protection.