Torsional dynamic response of tapered pile considering compaction effect and stress diffusion effect

被引：22

作者：

Guan Wen-jie ^{[1
,2
,3
]}

Wu Wen-bing ^{[1
,2
]}

Jiang Guo-sheng ^{[1
]}

Chin Jian Leo ^{[3
]}

Deng Guo-dong ^{[4
]}

机构：

[1] China Univ Geosci, Fac Engn, MOE Engn Res Ctr Rock Soil Drilling & Excavat & P, Wuhan 430074, Peoples R China

[2] Guangxi Univ, Coll Civil Engn & Architecture, MOE Guangxi Key Lab Disaster Prevent & Engn Safet, Nanning 530004, Peoples R China

[3] Univ Western Sydney, Sch Engn, Locked Bag 1797, Sydney, NSW 2751, Australia

[4] Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2020年 / 27卷 / 12期

基金：

中国国家自然科学基金;

关键词：

tapered pile; compaction effect; stress diffusion effect; complex stiffness transfer model; tapered fictitious soil pile model; SOIL; BEHAVIOR;

D O I：

10.1007/s11771-020-4503-y

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Considering both the compaction effect of pile surrounding soil and the stress diffusion effect of pile end soil, this paper theoretically investigates the torsional vibration characteristics of tapered pile. Utilizing the complex stiffness transfer model to simulate compaction effect and tapered fictitious soil pile model to simulate stress diffusion, the analytical solution for the torsional impedance at tapered pile top is obtained by virtue of Laplace transform technique and impedance transfer method. Based on the present solution, a parametric study is conducted to investigate the rationality of the present solution and the influence of soil and pile properties on the torsional vibration characteristics of tapered pile embedded in layered soil. The results show that, both the compaction effect and stress diffusion effect have significant influence on the torsional vibration characteristics of tapered pile, and these two factors should be considered during the dynamic design of pile foundation.

引用

页码：3839 / 3851

页数：13

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