| 基桩低应变动测的频响特性与频域分析 |
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| 引用本文： | 丁科 王丰华 唐小弟. 基桩低应变动测的频响特性与频域分析[J]. 中南林学院学报, 2006, 26(6): 59-64 |
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| 作者姓名： | 丁科 王丰华 唐小弟 |
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| 作者单位： | [1]中南林业科技大学土木建筑与力学学院,湖南长沙410004 [2]中南林业科技大学后勤管理处,湖南长沙410004 |
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| 基金项目： | 中南林业科技大学引进人才基金项目“弹性波散射理论与应用研究”（编号0115）. |
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| 摘 要： | 动态测试与静态测试最大的区别在于动态测试包含了对多种频率成分的动态信号记录问题，频域分析是时域分析的一种必要的、有益的补充，能够更好地指导我们的现场测试．帮助我们选择更好的安装方法．在对基桩动态响应的频谱特性进行分析基础上，讨论了基桩低应变动测曲线的额域分析方法，并介绍了计算桩底土的单位剐度和桩身动刚度的方法．
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| 关 键 词： | 土建工程 基桩检测 低应变 反射波法 频域分析 时域分析 |
| 收稿时间： | 2006-05-30 |
Frequency Response Characteristics and Frequency-domain Analysis in Low-strain Dynamic Testing of Piles |
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| DING Ke, WANG Feng-hua, TANG Xiao-di. Frequency Response Characteristics and Frequency-domain Analysis in Low-strain Dynamic Testing of Piles[J]. Journal of Central South Forestry University, 2006, 26(6): 59-64 |
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| Authors: | DING Ke WANG Feng-hua TANG Xiao-di |
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| Affiliation: | 1. School of Civil Engineering and Meehanices, Central South University of Forestry and Technology, Changsha, Hunan 410083 China; 2. Department of Logistics Management, Central South University of Forestry and Technology, Changsha 410083, Hunan, China |
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| Abstract: | The main difference between dynamic testing and static testing is that dynamic testing records various frequency components of dynamic signals, It is pointed out that frequency-domain analysis is a necessary, beneficial and useful complement to time-domain analysis. It contributes to direct field measurements and helps us to select the method of erection of sensors. Based on an analysis of the spectral characteristics of dynamic response of piles, this paper introduces the analyzing method for frequency domain, and finally discusses a computing method for calculating the dynamic stiffness of piles. |
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| Keywords: | civil engineering pile detection low-strain reflected wave method frequency-domain analysis tlme-domaln analysis |
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