摘要
针对桩基低应变动测中应力波在桩身不连续界面产生反射的同时也会产生透射衰减,同时桩周土轴向阻尼作用也会进一步引起应力波的衰减,文章探讨了考虑桩土衰减系数和桩身不连续界面的透射系数、反射系数的低应变动测的桩身应力波衰减规律,并根据该规律,实现对桩基缺陷程度的量化分析。通过模型桩验证该方法是可行的。
In the low strain dynamic test of a pile, attenuation of the stress wave comes from transmission and reflection in the discontinuous interface of the pile and effect of soil-damp. The attenuation principle of the stress wave in the body of a pile in the low strain dynamic test is investigated. The effect of soil-damp and the moduli of transmission and reflection in the discontinuous interface of the pile are considered. Then quantitative analysis of the defect grade of the pile is made according to the attenuation principle of the stress wave in the body of the pile. The results of a model pile prove that the method is feasible.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第6期942-945,共4页
Journal of Hefei University of Technology：Natural Science
关键词
低应变动测
桩身阻抗
桩身应力波衰减规律
桩基缺陷
量化分析
low strain dynamic test
pile impedance
attenuation principle of stress wave in the body of a pile
defect grade of a pile
quantitative analysis
