摘要
基于横观各向同性饱和地基的Biot固结理论,建立了单桩分析的有限元固结分析方程,讨论了横观各向同性参数对桩土相互作用的影响。计算结果表明:水平向弹性模量Eh和竖直面上的剪切模量Gv对桩顶沉降和饱和土孔压的影响较大,而水平向应力引起的正交水平向应变的泊松比μh对桩顶沉降和饱和土孔压产生的影响较小。
Based on Biot＇s consolidation theory of transversely isotropic saturated soil, finite element equations are set up for a single pile embedded in Wansversely isotropic saturated soil, the effects of transversely isotropic soil parameters on pile-soil interaction in satttrated soil are discussed. Numerical results show that Young＇s modulus Eh in the plane of transversely isotropy and the shear modulus Gv in the plane normal to the plane of transversely isotropy have remarkable effects on the settlement of pile top and the excess pore pressure of saturated soil under the bottom of pile, however, Poisson＇s ratios Ph characterizing the orthotropic lateral strain response in the plane of transversely isotropy to a stress acting parallel to it has less effect on the settlement of pile top and the excess pore pressure of saturated soil under the bottom of pile.
基金
国家自然科学基金资助项目(50578121)
关键词
横观各向同性
有限单元法
BIOT固结
单桩
transversely isotropy
finite element method（FEM）
Biot＇s consolidation
single pile
