桥墩扰流对通航净宽尺度影响的试验研究

Experimental Research on Influence of Disturbed Flow at Bridge Pier on Navigation Clearance

建桥后由于桥墩扰流,改变了原有的水流条件与河床冲淤条件,从而影响到原有的通航条件。在总结国内主要研究成果的基础上,结合水槽定、动床试验成果,对桥墩扰流宽度影响因素进行深入分析,并用量纲分析法得出其计算公式。

Due to the disturbed flow at bridge pier, the original condition of flow and bed scouring and sedimentation was changed, and thus the navigation condition was affected. Basing on a summary of main research achievement in China, and combining the results of static ＆ mobile bed model tests, an in-depth analysis was carried out to the influential factors of disturbed flow＇s width, and the calculation formula was obtained by dimensional analysis method.