p-y curve characteristics of dynamic pile-soil interaction during sand liquefaction

被引：0
|
作者：
Zhang Z. [1 ,2 ]
Tang L. [1 ,2 ]
Ling X. [1 ,3 ]
Si P. [1 ,2 ]
Tian S. [1 ,2 ]
Cong S. [1 ,2 ]
机构：
[1] School of Civil Engineering, Harbin Institute of Technology, Harbin
[2] Heilongjiang Research Center for Rail Transit Engineering in Cold Regions, Harbin
[3] School of Civil Engineering, Qingdao University of Technology, Qingdao
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2022年 / 43卷 / 10期
关键词：
dynamic p-y curve; dynamic pile-soil interaction; earthquake response; liquefaction process of sand; liquefiable ground; pore pressure ratio; shake-table test; sine wave;
D O I：
10.11990/jheu.202102032
中图分类号：
学科分类号：
摘要：
In order to study the pile-soil dynamic interaction in the process of soil liquefaction, the shake-table test of pile-soil structure interaction was completed based on sine wave loading, in which the p-y curve of pile-soil dynamic interaction was established and the p-y curve characteristics of pile-soil dynamic interaction in the soil liquefaction process were described. Results show that the pore pressure of the sand layer increases rapidly under high-frequency sine wave loading; in the process of sand liquefaction, the bending moment of the pile increases and then decreases. Under low-frequency loading, the hysteresis loop of the dynamic p-y curve of sand does not soften; under high-frequency loading, the area of the hysteresis loop of the dynamic p-y curve increases, and the reaction force of pile side soil increases. The dynamic p-y curve of liquefied sand is concave. The research results can provide a reference for pile foundation design and engineering construction in liquefaction sites. © 2022 Editorial Board of Journal of Harbin Engineering. All rights reserved.
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页码：1433 / 1439
页数：6
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