有限深度均匀水流中圆柱横向阻力影响特性

Influencing Characteristics for Drag Force of Cylinder Pile Flowing Around by Uniform Water Flow with Free Surface and Definite Depth

为解决规则圆柱桩群阻力计算问题,以指导涉及规则圆柱桩群的物理模型试验和数值模拟计算等工作,在归纳总结已有研究成果的基础上,通过先进的数显式测力设备和较为准确的悬浮测力法,对有限深度均匀水流中多圆柱横向等间距不同方式的排列桩群进行了阻力测试研究,得出了有限深度均匀水流中圆柱横向阻力影响特性规律,并归纳总结出了圆柱横向阻力影响系数的经验公式。通过大量的测试试验数据证实了这些研究规律的准确性、有效性及实用性,对工程实践具有参考价值。

To solve the problem of calculation for drag force of cylinders piles, in order to direct the works of physical model test and numerical value simulation concerned with regular cylinder piles, concluded and summarized the existing research results of study on drag force characteristics of group of cylinder piles by the advanced test precision instrument as digital-show dynamometer and more advanced and scientific measure-method as floating, through measuring the drag force of several or few or many cylinder piles arranged in a row with equidistance be perpendicular to the water flow direction, the law of influencing characteristics for drag force of cylinder pile flowing around by uniform water flow with free surface and definite depth was gained and the empirical formula of horizontal influencing coefficient was summarized. Through a large number of test data, the accuracy, effectivity, scientificity and practicability of these research laws were verified. It can be as reference for engineering practices.