| 强夯引起地基震动衰减规律的数值模拟 |
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| 引用本文： | 高飞,陈龙珠,黄大治. 强夯引起地基震动衰减规律的数值模拟[J]. 建筑技术开发, 2003, 30(7) |
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| 作者姓名： | 高飞 陈龙珠 黄大治 |
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| 作者单位： | 上海交通大学建工学院安全与防灾工程研究所,上海,200030;上海交通大学建工学院安全与防灾工程研究所,上海,200030;上海交通大学建工学院安全与防灾工程研究所,上海,200030 |
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| 摘 要： | 从弹性地基空间轴对称动力问题出发 ,建立强夯计算模型 ,运用轴对称有限元法对单点单次夯击下地基的振动过程进行数值模拟。结合工程算例 ,详细分析了强夯施工时地基土的位移、速度和加速度随时间的变化过程及其峰值的空间分布 ,进而分析强夯引起地基震动衰减规律以及相应的减振隔振措施 ,为控制强夯地基处理施工产生的振动影响提供了一些有益的参考
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| 关 键 词： | 强夯 地基加固 振动 有限元 |
NUMERICAL SIMULATION OF GROUND VIBRATION CAUSED BY DYNAMIC COMPACTION |
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| Gao Fei Chen Long-zhu Huang Da-zhi. NUMERICAL SIMULATION OF GROUND VIBRATION CAUSED BY DYNAMIC COMPACTION[J]. Building Technique Development, 2003, 30(7) |
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| Authors: | Gao Fei Chen Long-zhu Huang Da-zhi |
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| Affiliation: | Gao Fei Chen Long-zhu Huang Da-zhi |
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| Abstract: | Based on the space axis-symmetric dynamic model of elastic foundation,ground vibrations caused by the dynamic compaction are simulated by a finite element analysis procedure.For a single tamping,time histories of soil displacement,velocity and acceleration as well as their maximum peaks are analysed in details with some curve fitting equations.The effect of vibration-isolationg trench surrounding a tamping point is also evaluated,which shows a useful reference for controlling vibrations generated by the construction activity. |
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| Keywords: | Dynamic compaction Soil improvement Ground vibration Finite element method. |
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