双层地基中瑞利波引起的桩土竖向共同作用

Vertical Soil Pile Interaction during the Passage of Raileigh Waves in Two Layered Soil

利用文克尔地基模型 ,考虑桩底支承条件 ,研究了双层地基在瑞利波作用下桩土竖向共同作用 ,探讨了下卧层剪切波速、频率、桩土模量比及桩底支承条件对桩竖向位移和应力的影响 。

An analytical solution is presented to calculate the vertical single pile response in two layered soil when excited by the passage of Rayleigh seismic waves. The results are obtained through a widely used dynamic Winkler model, with realistic frequency dependent ‘springs’ and ‘dashpots’. It is shown that the frequency, velocity of shear waves, boundary conditions are of great influence on vertical displacement and strain of a single pile.