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中文摘要：
通过有限深度均匀流水槽试验研究不同圆柱桩群对均匀水流的绕流影响程度。通过多组试验研究数据对比分析得到圆柱桩群对均匀水流的影响规律;不同圆柱桩群对同样水流影响性质与程度的差别;不同圆柱桩群对水流流场影响范围的规律;圆柱桩群的阻流率、排架密度、桩群长度对水流流场的影响规律;不同流速的水流对圆柱桩群影响的反应规律;水流绕流圆柱桩群时,横向断面流速的变化规律等。研究分析还发现：桩群阻力是桩群影响水流的一个因素但非唯一因素,桩群的排列方式和桩群迎流角对水流流速的变化有不同程度的影响,且其影响程度大于阻力影响。
英文摘要：
Through flume tests of uniform current and limited depth, this paper studies the influence of different cylinder pile clusters on the circumfluence. By contrast analysis of several groups of experimental data, we achieved the laws including the influence of different cylinder pile clusters on the uniform flow, the influential scope of different cylinder clusters on the flow filed, the difference of the influential feature and degree from different cylinder pile clusters on the same flow, the influential scope of different cylinder pile clusters on the flow field, the influences of the flow-obstructing ratio, the bents＇ arrangement and cluster length on the flow field, the reaction of flow with different velocity on the cylinder pile clusters, as well as the variation of flow velocity on the transverse section, etc. It is found that the drag of cylinder pile cluster is one but not the only one factor affecting the water flow, the arranging formats and up-flow angles of cylinder pile cluster have different influences on the variation of flow velocity, and the back is greater than the front factor.
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