| 旁孔透射波法检测水泥搅拌桩的三维有限元分析 |
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| 引用本文： | 黄大治,陈龙珠.旁孔透射波法检测水泥搅拌桩的三维有限元分析[J].上海交通大学学报,2007,41(6):960-964. |
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| 作者姓名： | 黄大治 陈龙珠 |
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| 作者单位： | 上海交通大学,安全与防灾工程研究所,上海,200240 |
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| 摘 要： | 介绍了旁孔透射波法的原理和测试步骤,建立了桩-土体系的三维有限元模型并对这种无损检测方法在水泥搅拌桩中的应用进行了三维有限元分析.数值分析分别给出了饱和土、非饱和土地基中完整桩和缺陷桩的旁孔透射波信号,并由此分析了P波时-深图中特征与桩身质量的相关性.结果表明,旁孔透射波法简单易行,是适合于水泥搅拌桩检测的一种新方法.
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| 关 键 词： | 水泥搅拌桩 旁孔透射波法 三维有限元法 完整性 |
| 文章编号： | 1006-2467（2007）06-0960-05 |
| 收稿时间： | 2006-07-05 |
| 修稿时间： | 2006年7月15日 |
3D Finite Element Analysis of Parallel Seismic Method for Integrity of Cemented Soil Columns |
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| HUANG Da-zhi,CHEN Long-zhu.3D Finite Element Analysis of Parallel Seismic Method for Integrity of Cemented Soil Columns[J].Journal of Shanghai Jiaotong University,2007,41(6):960-964. |
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| Authors: | HUANG Da-zhi CHEN Long-zhu |
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| Abstract: | The principle and process of parallel seismic method for the integrity of cemented soil columns were introduced.A 3D finite element model for the pile-soil system was established for impulse responses.Under saturated soil or unsaturated soil condition,some vibrating velocity-time histories at different depths in the parallel hole were obtained with the numerical model.It is shown that the length and 1D P-wave velocity of a cemented soil column are easy to determine from the features of the mentioned velocity-time histories.The effect of 3D P-wave propagation through the saturated soil and the defect of the cemented-soil column on the velocity-time histories in the parallel hole were also investigated. |
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| Keywords: | cemented soil columns parallel seismic method three-dimensional finite element method (integrity) |
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