摘要
利用平均固结度普遍解,将未打穿砂井地基转化为等效双层地基,给出其一维固结的解析解,求出未打穿砂井地基的平均固结度。根据所给出解、现有解和有限单元法,编制程序,绘制了贯入比ρw值对固结影响曲线图,对各种求解未打穿砂井地基平均固结度的方法展开评估。研究表明,所给出解能较好地反映不同排水条件下未打穿砂井地基中总平均固结度–竖向固结时间因子(U-Tv)曲线变化情况,适合于工程应用。
The ground by partially penetrated sand drain is turned into an equivalent-double-layered ground with the general solution of average degree.of consolidation; and its analytical solution of one-dimensional consolidation is worked out, and furthermore, the average degree of consolidation is gained. Based on this solution, the present existing solutions, and finite element method, these relevant programs are coded. The influence of ρw on the consolidation process is investigated; and the relevant results are prepared in graph forms; and the applicability of all these solutions is evaluated. It is shown that the curves of U - Tv are more actual which is drawn by this solution in comparison with the others in the case of PTPB or PTIB. And the solution given in this paper meets the requirements of project.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第22期4164-4171,共8页
Chinese Journal of Rock Mechanics and Engineering
关键词
土力学
未打穿砂井地基
等效双层地基
平均固结度
解析解
soil mechanics
ground by partially penetrated sand drain
equivalent-double-layered ground
averagedegree of consolidation
analytical solution
