| 长螺旋钻孔灌注桩完整性的定量分析方法研究 |
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| 引用本文： | 卢海林,刘勇,彭少民.长螺旋钻孔灌注桩完整性的定量分析方法研究[J].武汉理工大学学报,2007(Z2). |
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| 作者姓名： | 卢海林 刘勇 彭少民 |
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| 作者单位： | 长江大学城市建设学院 荆州434023(卢海林，刘勇)，武汉理工大学土木工程与建筑学院 武汉430070(彭少民) |
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| 基金项目： | 湖北省教育厅科学研究计划重点(2004D0009) |
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| 摘 要： | 从桩-土系统共同作用的波动阻尼方程入手,建立了成层土中缺陷长螺旋钻孔灌注桩的时域响应模型。提出了采用加权的方法对成层土中桩侧土阻尼系数进行等效简化的概念,并由此拟合出了长螺旋钻孔灌注桩缺陷程度与速度响应曲线中入射波和反射波幅值之比的关系式,从而实现了量化分析。通过模型桩验证了此量化分析方法的正确性。
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| 关 键 词： | 长螺旋钻孔灌注桩 缺陷程度 量化分析 阻尼系数 时域响应 |
Research on Quantitative Analysis Method for Integrity of Long Screw Drill and Pour Pile |
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| LU Hai-lin,LIU Yong,PENG Shao-min.Research on Quantitative Analysis Method for Integrity of Long Screw Drill and Pour Pile[J].Journal of Wuhan University of Technology,2007(Z2). |
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| Authors: | LU Hai-lin LIU Yong PENG Shao-min |
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| Affiliation: | LU Hai-lin1,LIU Yong1,PENG Shao-min2 |
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| Abstract: | The time-domain response model of flaw long screw drill and pour pile was established based on the damped wave equation of pile-soil interaction system.The concept that using the weighted method to make equivalent simplification for soil damping coefficient around pile in layered soil was proposed,the relation between the degree of defect in long screw drill and pour pile and the ratio of amplitude values of incident and reflected waves in the speed response curves was obtained by fitting method,and then realized the quantitative analysis.Model tests were conducted to verify the correctness of the quantitative analysis method. |
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| Keywords: | long screw drill and pour pile defect degree quantitative analysis damping coefficient time-domain response |
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