西北地震学报2011，Vol.33Issue(3)：249-254,6.
软土地基连续强夯置换碎石墩的数值分析
Numerical Simulation of Stone Column Replacement by Consecutive Dynamic Compaction in Soft Ground
谢新宇 1徐玉胜 2吴健 1江辉煌 3吴勇华2
作者信息
- 1. 浙江大学教育部软弱土与环境土工重点实验室,浙江杭州 310027
- 2. 铁道部科学研究院深圳研究设计院,广东深圳 518034
- 3. 中国汉嘉设计集团,浙江杭州 310005
- 折叠
摘要
Abstract
Based on the damage mechanics of soil and using ABAQUS software, considering the failure mechanism of soil under dynamic compaction, the geometric nonlinear and material nonlinear axisymmetric finite element method with large deformation for simulating the formation course of stone column under consecutive impact loading is established. From comparison and analysis for the results of model test and numerical simulation, the formation course of stone column and soil deformation course are obtained. The effect of area of failure to next dynamic compaction on stone column for every compacting is taken into account when simulates the formation progress. The depth development of stone column with compaction numbers is analyzed under different conditions such as compaction energy, cushion thickness and hammer diameter. The shape of stone column is described in every compaction loading, and its spatial distribution could be predicted successfully. The achievement of this paper will be helpful to similar engineering practices.关键词
损伤力学/碎石墩/连续强夯/数值分析Key words
Damage mechanics/ Stone column/ Consecutive dynamic compaction/ Numerical simulation分类
建筑与水利引用本文复制引用
谢新宇,徐玉胜,吴健,江辉煌,吴勇华..软土地基连续强夯置换碎石墩的数值分析[J].西北地震学报,2011,33(3):249-254,6.
