Seismic Behavior and Failure Mechanism of Pile-Group in Mildly Sloping Liquefiable Soils with Crusts: Large-Scale Shaking Table Experiment

被引：2
|
作者：
Jia, Kemin [1 ]
Xu, Chengshun [1 ,4 ]
Dou, Pengfei [2 ]
Zhang, Xiaoling [1 ]
Song, Jia [3 ]
机构：
[1] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
[2] Tsinghua Univ, Beijing, Peoples R China
[3] North China Univ Technol, Sch Civil Engn, Beijing, Peoples R China
[4] Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100022, Peoples R China
来源：
JOURNAL OF EARTHQUAKE ENGINEERING | 2023年 / 27卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Pile foundation; seismic failure mechanism; lateral spreading; liquefaction; crust; shake-table test; LIQUEFACTION; PERFORMANCE; FOUNDATIONS; DAMAGES; DEMANDS; CHILE; PORT; SITE;
D O I：
10.1080/13632469.2022.2162634
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A one-g shake table experiment was performed to reveal the failure mechanism of the pile group in sloping liquefiable soils with crusts. The results show that the shallow saturated sand exhibits the alternate behavior of dilatancy and shrinkage, which induces high-frequency peak acceleration. In addition, larger PGA tends to transfer vulnerable positions of the pile in the liquefiable layer from the shallow layer to the interface. Moreover, the pile group effect mainly manifested in piles at the bottom of saturated sand and pile-head during strong earthquakes.
引用
收藏
页码：4260 / 4287
页数：28
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