Experimental study on local scour plane size around the pile groups of tower foundation in sandy rivers

被引：0
作者：
Cao S. [1 ]
Zhang H. [1 ,2 ]
Zhu M. [2 ]
Zhang T. [2 ]
机构：
[1] State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing
[2] Yellow River Research Center, Tsinghua University, Beijing
来源：
Shuili Xuebao/Journal of Hydraulic Engineering | 2019年 / 50卷 / 06期
关键词：
Local scour; Physical model test; Pile groups; Plane size; Regularly distributed; Sandy rivers;
D O I：
10.13243/j.cnki.slxb.20190019
中图分类号：
学科分类号：
摘要：
The plane size of local scour pit is the guiding basis for protecting the riverbed that may be scoured in sandy rivers, and it is also an important component for predicting the local scour results of pile groups. Based on the theory of sediment kinematics, this paper analyzed the evolution and influencing factors of regularly distributed pile groups in the local scour process, and put forward a local scour intensity index which can comprehensively reflect the influence of water flow intensity and tower foundation structure. On this basis, the physical model test method is adopted, and the correlation between local scour intensity index and plane size was obtained through statistical analysis. Finally, the regression equations were verified by two groups of river-crossing engineering examples. The results show that the calculated value of the fitting formula is in good agreement with the measured value with an error of less than 10%, which can provide a technical reference for the protection of the bed surface around regularly distributed pile groups in sandy rivers. © 2019, China Water Power Press. All right reserved.
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页码：753 / 760
页数：7
相关论文
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