Computers and Geotechnics ( IF 5.3 ) Pub Date : 2021-05-23 , DOI: 10.1016/j.compgeo.2021.104218 Yuan Chen , An-Feng Hu , Sen-Lin Xie , Yi-Yang Chen , Zhao-Qi Gong
Considering the foundation stiffness, this paper presents a new theory for consolidation of the stone column reinforced ground with time-dependent drainage boundary. The differential settlement between the soil the and column is obtained by using an improved equal-strain assumption. And the drainage capacity at the top of column is described by a time-decaying exponential function. Based on the above assumptions, a general solution for the differential governing equation is derived using the method of variables separation. A parametric study is carried out to evaluate the effects of the stiffness and the drainage boundary on the average degree of consolidation, the differential settlement and the stress concentration ratio. Finally, the settlement predicted by the present solution is compared with the measured settlement from a previous case study, and the value of the parameter in time-dependent boundary is discussed.
中文翻译:
考虑地基刚度的时变排水边界石柱加筋地基固结理论
考虑基础刚度,本文提出了一种具有时变排水边界的固结石柱加筋地面固结的新理论。土和柱之间的差异沉降是通过使用改进的等应变假设获得的。柱顶的排水能力由时间衰减指数函数描述。基于以上假设,采用变量分离法推导了微分控制方程的一般解。进行了参数研究,以评估刚度和排水边界对平均固结度,差异沉降和应力集中比的影响。最后,将本解决方案预测的沉降与之前案例研究中测得的沉降进行比较,