摘要
利用Fourier变换 ,得到纵向振动桩在简化条件下侧壁切应力的频率域表达式 ,应用该表达式获得桩周土的等效刚度系数k和等效阻尼系数c的计算式 ,它们是桩周土剪切波速和密度、桩半径和振动频率的函数 ,把它们用于桩瞬态纵向振动计算 ,并与工程桩反射波法动测曲线进行对比 。
A frequency domain expression of shear stress along pile soil interface is derived by using Fourier transform for transient longitudinal vibration of piles.Stiffness k and damping coefficient c of the soil around the piles are obtained by applying the expression,which are functions of shear wave velocity and density of the soil,radius and vibration frequency of the pile.Good agreement between simulated and measured curves of engineering piles indicates that the expressions of k and c are very efficient for calculating transient longitudinal vibration of piles.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2001年第5期544-546,共3页
Chinese Journal of Geotechnical Engineering
关键词
桩
瞬态纵向振动
切应力
频率域
FOURIER变换
pile
transient longitudinal vibration
shear stress
frequency domain
Fourier transform
