分层饱和土中横向受荷桩动力响应分析

Analysis of dynamic response of laterally loaded pilein layered fluid-saturated soil

考虑饱和土的成层性和孔隙流体与土骨架变形的相互作用,用积分变换方法构建盘面和柱面荷载作用下土体与结构动力相互作用影响函数,用边界元方法建立相应的考虑饱和土成层性的地基与桩基础动力相互作用分析方法。以层状饱和土中横向受荷桩动力阻抗分析表明分析方法的可行性。算例分析孔隙流体对分层饱和土中横向受荷桩动力响应影响。

The soil is treated as a layered two-phase mixture and the interactive influence of fluid flow and solid deformation is considered. The influence functions of dynamic interaction between saturated soils and structure with disk and barrel loading are obtained. Theoretical procedure of the dynamic interaction with pile and layered fluid-saturated soils is developed by an indirect boundary element method. Finally, dynamic impedance of piles in layered fluid-saturated soils is performed which can prove the present method true. The effects of fluid flow of two-phase saturated soils on dynamic response of piles are investigated.