飞云江特大桥桥墩局部冲刷试验研究

Experimental Study on Local Scour at Large Bridge Pier of Feiyun River

飞云江特大桥位于飞云江口门水域,桥墩结构及水动力条件复杂,通过建立大比尺正态物理模型进行桥墩局部冲刷试验,对设计洪水、设计潮水条件下桥墩的最大局部冲刷深度及冲刷坑形态、范围进行预测,并通过公式估算、实测分析、试验类比的方法对试验结果进行合理性分析。为工程设计及运行安全提供技术支撑。

The Feiyun river large bridge located at entrance of the river,the pier structure and hydrodynamic condition is very complex.A big scale undistorted model was set up to test the local scour of pier.It forecast the maximum local scour depth,the scour hole morphology and scour hole range of piers in condition of the design flood and spring tide.Analysed the rationality of results through the method of formula calculation,measured data analysis and testing analog,and so on.It finally offered a technological support for the engineering design and the operation safety.