STUDY ON VERTICAL VIBRATION OF PILE IN RADIAL INHOMOGENEOUS SOIL
The response of the float pile under dynamic loads is greatly influenced by the reactions of the soil which may be strengthened or weakened during the construction process. In the construction process, the properties of soil vary gradually in the radial direction, resulting in a radial inhomogeneous soil layer. By using the three-dimensional axisymmetric model and considering the vertical displacement of the soil, the paper assume the pile is vertical, elastic, uniform, and with circular cross-section, moreover, it rests on elastic support and is subjected to vertical harmonic load. In addition, the soil around the pile is divided into three zones along the radial direction, which are considered as linear viscoelastic media with hysteretic type damping and rest on elastic support as well. Thus the certain vibration problem of pile-soil system is established. Then the dynamic equilibrium equations of three zones soil and the pile are solved one by one, and some analytical or semi-analytical dynamic responses of the pile in frequency domain or time domain are obtained. Lastly, the influences of soil parameters and radius on the dynamic responses are studied and many figures are presented to illustrate the effects.
pile-soil interaction radial heterogeneous hysteretic type damping complex stiffness analytical solution vertical vibration.
Dong-Ying Yang Kui-Hua Wang
Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310027, P.R. China
国际会议
长沙
英文
241-249
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）