摘要
本文采用边界层模型分析了单桩在强烈水平激振作用下的动力反应,并且与大尺寸的模型桩的动力试验结果进行了对比。桩的动力特性用刚度、阻尼和位移的频率响应曲线来表达。文中着重研究了激振强度、重复荷载以及桩顶承台与地面的接触状态对单桩的动力特性的影响,并且讨论了桩顶轴向静荷载对桩的水平刚度和阻尼的影响。利用PILAY2和DYNA计算机程序得到的理论反应曲线符合单桩的动力实测结果。
Dynamic response of a single pile under strong horizontal excitation is analyzed using boundary zone model in this paper, and compared with the experimental results for large-scale model pile. The dynamic behaviour of the pile is presented as frequency response curves for displacement, stiffness, dashpot constant and damping ratio. The influences of excitation intensity, repeated loading and cap contact with soil on the dynamic behaviour of a single pile are investigated emphatically, and the influences of static axial load on the horizontal stiffness and damping for the pile are discussed. The theoretical response curves calculated from P1LAY2 and DYNA computer codes agree with the measured data.
出处
《地震工程与工程振动》
CSCD
北大核心
1989年第2期97-106,共10页
Earthquake Engineering and Engineering Dynamics
