多波束系统在崇启大桥基础冲刷检测中的应用

Application of Multibeam System in Foundation Scour Detection of Chongqi Bridge

摘要:

基础冲刷是造成桥梁病害的重要因素之一。针对大桥水下环境复杂、检测难度大的问题，探讨了一种高效、高精度的基础冲刷检测技术-多波束测量技术。简述了多波束系统的工作原理及系统组成，并结合实际工程，对崇启大桥51个桥墩及其周围水下地形进行扫测，直观地展示出水下桥梁基础冲刷程度、外观形态及河床地形地貌，为桥梁后期安全评价提供数据支撑。

Abstract:

Foundation scour is one of the important factors causing the bridge diseases. In the view of the problems of complex underwater environment and large detection difficulty of the bridge, a high-efficiency high-precision foundation scour detection technology – the multibeam measurement technology is discussed. The operational principle and system composition of the multi-beam system are described. And combined with an actual project, 51 piers of the Chongqi Bridge and its surrounding underwater terrain are scanned in order to visually show the underwater bridge foundation scour level, appearance and riverbed topography, which provides the data support for subsequent safety assessment of the bridge.