夯锤在水中运动特性的试验研究

发布时间：2018-08-29 16:16

【摘要】：水下抛石基床在海岸工程中应用广泛,重锤夯实法为抛石基床的主要密实方法之一。针对水下强夯过程中,夯锤受到水阻力影响,无法准确测定夯击能的问题,进行圆台型夯锤在水中运动特性的试验研究,采用理论计算、模型试验及数值模拟相结合的方法,通过对比分析,得到确定夯锤水阻力系数的数值计算方法,为确定不同形状的夯锤有效夯击能提供依据。
[Abstract]:Underwater riprap bed is widely used in coastal engineering. Heavy hammer ramming method is one of the main compacting methods of the bed. In view of the problem that the tamping hammer is affected by water resistance in the process of underwater dynamic compaction, it is impossible to accurately measure the tamping energy. The experimental study on the motion characteristics of the round type rammer in water is carried out, and the method of combining theoretical calculation, model test and numerical simulation is adopted. Through comparison and analysis, a numerical calculation method for determining the water resistance coefficient of the rammer is obtained, which provides a basis for determining the effective tamping energy of the rammer with different shapes.
【作者单位】：中交四航工程研究院有限公司;华南理工大学土木与交通学院;中交第四航务工程局有限公司;河海大学岩土力学与堤坝工程教育部重点实验室;
【分类号】：U655.54

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