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港珠澳大桥装上“超强大脑” 识别车牌仅需0.3秒

2018-01-05 14:14:36    央广网

4日,记者在港珠澳大桥管理局洪湾管理中心看到,整墙巨大的屏幕上,大桥任意监控点的实时视频随时显现。轻点鼠标,屏幕上即刻显示出一个三维立体画面,任意选择一盏灯移动鼠标,实时视频上便可清晰呈现出灯光亮度变化的全过程。

“在高速公路行业应用BIM系统展示系统机电设备数据流、供电流路由关系属世界首次。”项目副总工程师、系统集成部负责人张平博士告诉记者。

“如果某个点发生火灾,视频监控将随时捕捉,信息传递到监控终端,警报在几秒钟内就会响起。”张平介绍说,这一BIM系统不仅满足施工需要,未来还将在运维方面继续发力。

桥面伸缩缝内,电缆自由张弛

港珠澳大桥上的青州航道桥,巨大的“中国结”造型蔚为壮观。很少有人注意到“中国结”附近桥面,有一片是用长约1.7米、与大桥等宽的折叠式材料铺设的。

“受大风、温度、车辆等多种负荷作用,大桥会发生一定位移,必须要每隔一定距离设置伸缩缝。”蔡俊福解释说,各种电缆在通过桥梁伸缩缝处时,会承受较大的张力,易造成金属护套断裂与绝缘损坏,给大桥的通信与照明带来故障。

交通工程三项顶尖技术中的第三项,便是让电缆在伸缩缝内做到自由张驰。

项目联合相关设计院和设备厂家联合攻关,破解了一个又一个难题。通过对定制的电缆伸缩装置进行大幅改进,并运用各类实验手段,历经5个月的安装调试和近一年的运行观测,使应用于港珠澳大桥的4种伸缩量、7种安装形式的74套电缆伸缩装置全部满足设计要求。

“如今,装配在港珠澳大桥上的电缆伸缩装置,既能满足桥梁的自身条件,还能满足电缆弯曲半径、设备抗震要求,在国内外同类型产品中处于较高水平,填补了国内长大桥梁电缆相关技术空白。”蔡俊福说。

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