论文部分内容阅读
考虑真空预压下地基的变形与原有效应力及物理状态有关,真空度沿竖井线性减小,还考虑了地基的径竖向渗流以及扰动区土体水平渗透系数呈线性变化,推导了真空预压下竖井地基固结度的一个解析解并分析了地基固结性状。结果表明,地基原有效应力对地基固结度有较大影响,原有效应力越大,固结越快;而地基压缩系数、孔隙比及真空度大小对地基固结快慢没有影响。
Considering that the deformation of the foundation under vacuum preloading is related to the original effective stress and physical state, the vacuum decreases linearly along the shaft, the vertical and horizontal seepage of the foundation and the horizontal permeability coefficient of the soil in the disturbance zone are linearly changed, An Analytical Solution to Decrease the Degree of Consolidation of Shaft Foundation and Analyze the Foundation Consolidation Properties. The results show that the effective original foundation stress has a great influence on the consolidation degree of the foundation. The larger the effective stress is, the faster the consolidation. The compressibility of foundation, void ratio and degree of vacuum have no effect on the consolidation speed of foundation.