| 基桩质量定量分析的频响函数法 |
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| 引用本文： | 李命成.基桩质量定量分析的频响函数法[J].福州大学学报(自然科学版),2002,30(5):592-596. |
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| 作者姓名： | 李命成 |
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| 作者单位： | 厦门市建筑科学研究院,福建,厦门,361003 |
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| 摘 要： | 实测桩顶响应信号是振源与系统频响函数的时域卷积 .本文利用时谱技术 ,从桩顶反射信号的功率谱中分解得到频响函数的模函数 |H(f) |,导出了 |H(f) |函数与反射系数r的关系 ,提出了利用 |H(f) |函数定量识别基桩质量的方法 .为了证明本文方法的有效性 ,给出了 3根桩的识别实例 .
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| 关 键 词： | 频响函数 时谱技术 定量分析 基桩 |
| 文章编号： | 1000-2243(2002)05-0592-05 |
| 修稿时间： | 2001年10月18 |
A method for pile quantitative analysis with frequency response function |
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| LI Ming-cheng.A method for pile quantitative analysis with frequency response function[J].Journal of Fuzhou University(Natural Science Edition),2002,30(5):592-596. |
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| Authors: | LI Ming-cheng |
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| Institution: | LI Ming-cheng (Xiamen Institute of Build Research, Xiamen, Fujian 361003, China) |
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| Abstract: | The tested signal on pile head is the convolution of the vibration resource and frequency response function of itself in domain of time. Using cepstrum technique, the function |H(f)| is extracted from the power of velocity on a pile head, the relation between the function |H(f)| is concluded and a method for pile quantitative analysis is proposed in this article. Three practical examples are given to show the effectiveness of the proposed method. |
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| Keywords: | frequency response function cepstrum technique quantitative analysis pile |
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