【摘要】 扼要评述高频振动沉桩机理,叙述在不同相对密度的饱和砂土中,通过小型模型试验研究模拟桩体贯入深度随激振频率(20~80 Hz)的变化规律。试验结果初步表明,增高振动频率可使饱和砂土液化加速,土阻力相应地快速减小,显著提高沉桩效率。更多还原

【Abstract】 The existing points on the mechanism of piling with high-frequency vibration are firstly reviewed in this paper,and then depicts a set of simulative experiments conducted on the saturated sand with different relative densities to investigate piling with vibration of 20~80 Hz.The preliminary results have shown that higher frequencies cause the saturated sand lower values of the liquefaction strength and leads to an easier piling.The conclusions of this paper are useful for further study and application of piling with high frequency vibration to practice.更多还原