苏通大桥河床冲刷多尺度监测系统的构建

为了监测苏通长江公路大桥的河床冲刷深度,利用水深传感器建立了桥位区的小尺度监测系统,实现了群桩基础内部河床冲刷的实时监测,并引入网络覆盖模型,对传感器埋设位置进行了优化,解决了河床冲刷传感器位置的优化问题;利用多波束测深系统建立了整个河床防护区的大尺度冲刷监测系统,并对部分实测数据进行了分析.结果表明:所建立的河床冲刷多尺度监测系统能够实现河床冲刷深度的高精度监测,整个系统的监测精度可以达到dm级.

Multi-scale Monitoring System Construction of River-Bed Scouring around Sutong Bridge

In order to monitor the river-bed scouring depth around Sutong bridge,a small-scale monitoring system was established with water piezometers to realize the real-time monitoring of the scouring depth in the middle area of pile-group foundation,and the sites of the water piezometers were optimized based on the network coverage model.A large-scale monitoring system of protected river-bed area was constructed using a multi-beam sounding system,and parts of monitoring data were analyzed.The result shows that the multi-scale monitoring system can monitored the scouring depth with high precision,and its monitoring precision can reach decimeter level.