摘要
为研究环翼式桥墩环翼式挡板的最佳延伸长度,进行了不同流速和不同环翼式挡板延伸长度下环翼式桥墩的局部防冲刷试验。试验结果表明:环翼式挡板的延伸长度不同,桥墩的冲刷效果有较大的差别,当环翼式挡板的延伸长度与桥墩的半径相同时,与无挡板的桥墩相比最大冲坑深度可减小57.6%,近底垂向流速最大可减小70.4%,近底紊动强度也明显减小,防冲刷效果显著。
In order to determine the optimal development lengths of ring-wing baffle, a series of experiments were carried out to study the effects of local scour with different velocities and different baffle development lengths. The test results show that the local scour effects are significantly different for piers with different ring-wing baffle lengths. Compared to the flow conditions without baffles, the maximum scour length and the near-bottom vertical velocity can be reduced by 57.6% and 70. 4% , respectively, and near-bottom turbulence intensity is significantly reduced when the development lengths of ring- wing baffle and the pier radius are the same.
出处
《水利水电科技进展》
CSCD
北大核心
2013年第2期32-36,共5页
Advances in Science and Technology of Water Resources
关键词
环翼式桥墩
挡板
延伸长度
冲坑深度
紊动强度
ring-wing pier
baffle
the development lengths
scour depth
turbulence intensity
