| 基桩低应变缺陷定量分析新方法的研究 |
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| 引用本文： | 赵晓艳,臧民,蔡靖,李静娟. 基桩低应变缺陷定量分析新方法的研究[J]. 建筑科学, 2004, 20(4): 38-42 |
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| 作者姓名： | 赵晓艳 臧民 蔡靖 李静娟 |
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| 作者单位： | 河北工业大学,土木工程学院,天津,300132;中国建筑技术集团有限公司,北京,100013;天津大学,岩土工程研究所,天津,300072 |
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| 摘 要： | 从桩土共同作用的波动阻尼方程入手，建立缺陷桩的桩土系统参数模型，通过Laplace变换得到缺陷桩在瞬态激励作用下频率域中的速度响应解析解，通过傅丽叶逆变换将频率域中的缺陷桩速度响应变换为时域中的速度响应。根据此模型编制了Metlab程序，进行大量计算分析，得出缺陷程度与速度曲线中反射波、入射波振幅比之问的关系式。通过工程实际验证本文提出的时域缺陷量化分析方法的正确性。
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| 关 键 词： | 基桩 速度响应 振幅比 缺陷程度 定量分析 |
| 文章编号： | 1002-8528(2004)04-0038-05 |
A New Quantity Analysis Technique on Defects of Pile in Low Strain |
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| ZHAO Xiao-yan,ZANG min,CAI Jing,LI Jing-juan. A New Quantity Analysis Technique on Defects of Pile in Low Strain[J]. Building Science, 2004, 20(4): 38-42 |
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| Authors: | ZHAO Xiao-yan ZANG min CAI Jing LI Jing-juan |
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| Affiliation: | ZHAO Xiao-yan~1,ZANG min~2,CAI Jing~3,LI Jing-juan~1 |
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| Abstract: | This paper began with the wave-damping equation of pile-soil system, and the parameter model of defective piles was established. With Laplace transformation analytical solution of velocity response in frequency domain of a defective pile subjected to a transient dynamical load was found. And then response in time domain was gained with Fouire transformation. Based on the solution algorithm in Metlab was found in this paper, with which a number of calculation was made. At the result of the relation between defects' degree and amplitudes' ratio on test plot was established in this article. At last the solution of defect degree provided in this paper was verified by practical project. |
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| Keywords: | pile velocity response amplitude ratio defect degree quantity analysis |
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