| 桩土阻尼作用下低应变法可测桩长的分析 |
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| 引用本文： | 张献民,曹宗亮.桩土阻尼作用下低应变法可测桩长的分析[J].中国民航学院学报,2011(5):46-49. |
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| 作者姓名： | 张献民 曹宗亮 |
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| 作者单位： | 中国民航大学机场学院,天津300300 |
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| 基金项目： | 河北省交通科学基金项目（y-2010112） |
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| 摘 要： | 低应变检测是桩身完整性检测的一种常用方法。桩土的阻尼作用是造成应力波传播过程中衰减的关键因素。利用一维波动理论，建立桩土相互作用的方程，得到了波幅比与桩长、波速等因素的关系，进而得到检测中可测得的最大桩身长度范围。同时，利用ANSYSLS—DYNA进行模拟，从而验证了波在桩身传播过程中的衰减特性和计算所得结果的正确性。为该方法的克服局限的进一步研究起到一定的参考作用。
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| 关 键 词： | 低应变法 桩身完整性检测 可测桩长 桩土阻尼 |
Measurable Length of Pile Under Action of Pile-Soil Damping by Method of Low Strain Testing |
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| ZHANG Xian-min,CAO Zong-liang.Measurable Length of Pile Under Action of Pile-Soil Damping by Method of Low Strain Testing[J].Journal of Civil Aviation University of China,2011(5):46-49. |
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| Authors: | ZHANG Xian-min CAO Zong-liang |
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| Institution: | (Airport College, CA UC , Tianjin 300300, China) |
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| Abstract: | Low strain testing is one of the most popular methods in the area of pile integrity inspection. The pile-soil damping is the chief reason that leads to the decay of stress wave energy. Pile-soil effect model is established based on the one-dimensional wave theory, and the relationship of amplitude ratio and pile lengths is got, the measurable lengths in different kinds of soil are calculated. Ansys ls-dyna is used to simulate to validate the wave transmission decay in the piles. This study can do favorable effect to the further study on overcoming the limitation of low strain testing. |
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| Keywords: | low strain testing pile integrity test measurable length pile-soil damping |
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