| 三向位移计在桩基测试中的应用 |
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| 引用本文： | 颜钟,李端有,李强. 三向位移计在桩基测试中的应用[J]. 人民长江, 2011, 42(24): 41-44 |
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| 作者姓名： | 颜钟 李端有 李强 |
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| 作者单位： | 长江科学院工程安全与灾害防治研究所,湖北武汉430010;水利部水工程安全与病害防治工程技术研究中心,湖北武汉430010 |
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| 摘 要： | 三向位移计是线法监测仪器中的一个代表仪器,能够测定整条测线的应变。通过工程实例展示了三向位移计在桩基摩阻力及端阻力测试中的应用情况。采用四次多项式拟合法对实测应变曲线进行处理,继而得到摩阻力与端阻力。测试结果显示,桩在荷载较小的时候,反力大部分由桩侧摩阻力提供,当荷载增加到一定数值时,端阻力开始出现,此时侧摩阻力增量较小或不再随荷载的增加而增加,端阻力增量却表现得十分明显。桩侧摩阻力峰值位置会随荷载的增加而向桩底方向移动。
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| 关 键 词： | 桩基测试 摩阻力 端阻力 线法监测 三向位移计 |
Application of TRIVEC in pile testing |
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| YAN Zhong , LI Duanyou , LI Qiang. Application of TRIVEC in pile testing[J]. Yangtze River, 2011, 42(24): 41-44 |
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| Authors: | YAN Zhong LI Duanyou LI Qiang |
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| Affiliation: | YAN Zhong1,2,LI Duanyou1,LI Qiang1,2(1.Engineering Safety and Disaster Prevention Scientific Institute,Changjiang River Scientific Institute,Wuhan,430010,China,2.Research Center on Water Engineering Safety and Disaster Prevention of Ministry of Water Resources,Wuhan 430010,China) |
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| Abstract: | TRIVEC is a representative of linear observation equipment that can measure strain in a whole line range.We present the application of TRIVEC in detection of frictional resistance and end resistance in a pile testing projects.Quartic polynomial fitting is applied to process the measured strain data,and then the frictional resistance and end resistance of a pile can be obtained.The result show that,frictional resistance provides a larger part of counter force when load is small,but when the load increases to... |
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| Keywords: | pile testing frictional resistance end resistance linear monitoring TRIVEC |
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