防灾减灾工程学报2016，Vol.36Issue(4)：505-511,7.DOI:10.13409/j.cnki.jdpme.2016.04.001
刚性基础下劲性搅拌桩复合地基固结解析解
Analytical Solution for Consolidation of Composite Ground with Stiffened Deep Cement Mixing Piles under Rigid Foundation
摘要
Abstract
Based on the axisymmetric consolidation model,the equations governing the consolidation of composite ground with SDCM piles were derived under rigid foundation.The analytical solutions were then developed for the consolidation of the composite ground under an instant loading according to the 1-D consolidation theory of a double-layer ground.In order to verify the correctness and accuracy of the present solutions,comparison of the calculated consolidation rate of the composite ground by the proposed solution and the finite element method was made.The consolidation behavior of this new kind of composite ground was investigated using the proposed analytical solution.The results show that the consolidation rate of the composite ground with SDCM piles is greater than that of the conventional composite ground with DCM piles.It increases with the increasing of the length ratio of the concrete core pile to SDCM pile,the area replacement ratio and the compressive modulus of DCM pile socket.While the elasticity modulus of the core pile and its area core ratio have insignificant influence on consolidation rate of the SDCM pile reinforced soft ground.关键词
劲性搅拌桩复合地基/固结/解析解/芯长比/截面含芯率Key words
composite ground with stiffened deep cement mixing (SDCM)pile/consolidation/analytical solution/core-pile length ratio/area core ratio分类
建筑与水利引用本文复制引用
杨涛,唐凤..刚性基础下劲性搅拌桩复合地基固结解析解[J].防灾减灾工程学报,2016,36(4):505-511,7.基金项目
广东省交通科技项目(201102021)资助 （201102021）
