Analysis on kinematic and inertial interaction in liquefiable soil-pile-structure dynamic system

被引：0
作者：
Chengshun Xu
Hao Liu
Pengfei Dou
Jinting Wang
Su Chen
Xiuli Du
机构：
[1] Beijing University of Technology,Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education
[2] Tsinghua University,Department of Hydraulic Engineering
来源：
Earthquake Engineering and Engineering Vibration | 2023年 / 22卷
关键词：
shaking table experiments; pile-supported structures; dynamic response; liquefaction; lateral constraint; instability;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The dynamic pile-soil interaction in a liquefied site was investigated by means of numerical simulation and shaking table tests in this study. Based on the results from the shaking table experiment, the cross-correlation analysis of the soil displacement-pile bending moment and superstructure acceleration-pile bending moment was performed to study the influence of kinematic interaction and inertial interaction on the seismic response of piles. A relatively reasonable and accurate finite difference numerical analysis model of liquefiable soil-pile group-superstructure dynamic system was established. Through numerical simulation, the understanding of kinematic interaction and inertial interaction in the shaking table test was verified. The mass, damping and period of the superstructure were selected as variables to carry out parameter analysis to further study the influence of inertial interaction on the pile-structure failure mechanism. The results show that the influence of kinematic interaction on the pile was much greater than that of inertial interaction. The mass of the superstructure was the most important parameter of inertial interaction, and dynamic characteristics of the superstructure also had an effect on inertial interaction. The effect of inertial interaction on the part near the pile tip was more significant, indicating that the failure near the pile tip is closely related to inertial interaction.
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页码：601 / 612
页数：11
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