Experimental and theoretical study on dynamic stiffness of floating single pile and pile groups in multi-layered soil

被引：16

作者：

Cao, Xiaolin ^{[1
,2
,4
]}

Wang, Shun ^{[3
,4
]}

Gong, Weiming ^{[2
]}

Wu, Wei ^{[4
]}

Dai, Guoliang ^{[2
]}

Zhou, Fengxi ^{[1
]}

机构：

[1] Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China

[2] Southeast Univ, Sch Civil Engn, Nanjing 211189, Peoples R China

[3] Wuhan Univ, Inst Engn Risk & Disaster Prevent, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China

[4] Univ Bodenkultur Wien, Inst Geotech, Feistmantelstr 4, A-1180 Vienna, Austria

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2022年 / 157卷

基金：

中国国家自然科学基金;

关键词：

Pile groups; Field tests; Theoretical analysis; Dynamic stiffness; Multi-layered soil; IMPEDANCE FUNCTIONS;

D O I：

10.1016/j.soildyn.2022.107282

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

This paper presents a series of field tests to investigate the dynamic behavior of floating single pile and pile groups in multi-layered soil. In addition, an analytical approach is proposed for pile head stiffness under horizontal loading. The effective coefficient of pile group is obtained according to the head stiffness from experiment and theory. The proposed theory is validated by the experimental results with single pile and pile groups. The displacement amplitude and acceleration with frequency are analyzed. In addition, the effects of pile groups configuration on the pile head stiffness, the dynamic interaction factor and the dynamic efficiency coefficient are discussed.

引用

页数：10