摘要
建立了考虑桩体材料粘弹性、桩长有限、桩端为弹性支承时,考虑桩侧土作用、桩截面声阻抗发生突变状态下(有两个突变界面),桩顶受纵向激振时基桩受迫振动的定解问题,求得了稳态正弦及瞬态半正弦激振条件下的解析解,并对所得解进行了研究分析,结果显示,桩体材料粘性对变阻抗界面处的特征反射有着较大的影响。
At first,a model is established for the forced oscillation of foundation pile with variable cross section impedance with the viscosity of pile taken into account.Then the corresponding analytical solution is developed.The influences of coefficient of viscosity on the vibration are studied and a member of important conclusions are drawn.The results show that the theoretical curves are in good agreement with the measurements.
出处
《振动工程学报》
EI
CSCD
1999年第4期513-520,共8页
Journal of Vibration Engineering
关键词
桩
受迫振动
变截面阻抗
粘滞性
解析解
pile
forced oscillation
variable section impedance
viscosity
analytical solution
