| 软土地基连续强夯置换碎石墩的数值分析 |
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| 引用本文： | 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. |
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| 作者姓名： | 谢新宇 徐玉胜 吴健 江辉煌 吴勇华 |
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| 作者单位： | 浙江大学教育部软弱土与环境土工重点实验室;铁道部科学研究院深圳研究设计院;中国汉嘉设计集团; |
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| 摘 要： | 根据土体损伤力学,考虑在冲击荷载作用下土体失效机制,建立了基于ABAQUS软件的连续强夯碎石墩形成过程的大变形非线性轴对称有限元方法。根据室内模型实验和数值模拟对比研究,考虑了每一次冲击荷载下土体失效区域大小对下一击碎石进入土体的影响,得到了每次强夯作用下碎石墩性状和土体变形过程,分析了主要影响因素如不同夯击能、垫层厚度以及锤径条件下夯击次数与碎石墩高度之间的关系。本文结果对强夯工程实践具有指导作用。
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| 关 键 词： | 损伤力学 碎石墩 连续强夯 数值分析 |
Numerical Simulation of Stone Column Replacement by Consecutive Dynamic Compaction in Soft Ground |
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| XIE?Xin-yu,XU?Yu-sheng,WU?Jian,JIANG?Hui-huang and WU?Yong-hua.Numerical Simulation of Stone Column Replacement by Consecutive Dynamic Compaction in Soft Ground[J].Northwestern Seismological Journal,2011,33(3):249-254. |
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| Authors: | XIE?Xin-yu XU?Yu-sheng WU?Jian JIANG?Hui-huang and WU?Yong-hua |
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| Institution: | XIE Xin-yu1,XU Yu-sheng2,WU Jian1,3,JIANG Hui-huang2,WU Yong-hua1(1.MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,Zhejiang University,Hangzhou 310027,China,2.Shenzhen Research and Design Institute,China Academy of Railway Sciences,Guangdong Shenzhen 518034,3.China Hanjia Design Group,Hangzhou 310005,China) |
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| 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 ... |
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| Keywords: | Damage mechanics Stone column Consecutive dynamic compaction Numerical simulation |
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