单桩振动台试验及其内力分布研究

Shaking table test of single pile and its internal forces distribution

通过模拟振动台进行了多种不同工况下单桩模型的振动实验,及单桩在地震作用下内力分布的影响因素,及在不同时刻及不同激振波形下桩的内力分布规律。通过两组静力试验对比,分析了单桩在静力和振动作用下内力分布规律的差异。实验结果表明,单桩在地震作用下的内力分布与加载类型和激振波的动力特性有很大的关系。

Dynamic experiments of single pile model were conducted under different conditions by simulating vibration table. The influence factors of internal force distribution of single piles under seismic action were analyzed ;the distribution law of internal force at different times and under different excitation waveforms were explored. Through the comparison of vibration experiment with two sets of static tests, the internal force distribution law of single piles under static and seismic action was studied. The results show that the internal force distribution of single pile under seismic action is related strongly to the loading type and the dynamic characteristics of the excitation wave.