节点文献
基桩低应变动测的频响特性与频域分析
Frequency Response Characteristics and Frequency-domain Analysis in Low-strain Dynamic Testing of Piles
【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频域分析方法,并介绍了计算桩底土的单位刚度和桩身动刚度的方法.
【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.
【Key words】 civil engineering; pile detection; low-strain; reflected wave method; frequency-domain analysis; time-domain analysis;
- 【文献出处】 中南林学院学报 ,Journal of Central South Forestry University , 编辑部邮箱 ,2006年06期
- 【分类号】TU473.1
- 【被引频次】5
- 【下载频次】229