Torsional dynamic response of a floating pile in radially inhomogeneous saturated soils

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2025-04-11 DOI:10.1016/j.sandf.2025.101621

Hiep Toan Luong , Hien Manh Nghiem

{"title":"Torsional dynamic response of a floating pile in radially inhomogeneous saturated soils","authors":"Hiep Toan Luong , Hien Manh Nghiem","doi":"10.1016/j.sandf.2025.101621","DOIUrl":null,"url":null,"abstract":"<div><div>The pile construction process may disturb the soil adjacent to the pile shaft that significantly influences the torsional dynamic response of the floating pile. To consider this problem, the disturbed soil is divided into series of annular zones and a varying-parameter dimensionless function represents the tangential displacement in the radial direction is proposed. The energy principles and variational approach are employed to establish the governing equations of the pile-soil system subjected to dynamic torque applied at the pile head in the frequency domain. The proposed method has the capability to consider the radially inhomogeneous soil as well as the soil behavior beneath the pile base and the vertical shear strain that were ignored or not fully accounted in the existing solutions. The accuracy of this approach is also verified through comparisons of analysis results with those of established analytical solutions. Parametric studies are also performed to investigate the influence of the soil properties and the excitation frequencies on the pile head dynamic stiffness and damping of the pile-soil system.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101621"},"PeriodicalIF":3.3000,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soils and Foundations","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038080625000551","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The pile construction process may disturb the soil adjacent to the pile shaft that significantly influences the torsional dynamic response of the floating pile. To consider this problem, the disturbed soil is divided into series of annular zones and a varying-parameter dimensionless function represents the tangential displacement in the radial direction is proposed. The energy principles and variational approach are employed to establish the governing equations of the pile-soil system subjected to dynamic torque applied at the pile head in the frequency domain. The proposed method has the capability to consider the radially inhomogeneous soil as well as the soil behavior beneath the pile base and the vertical shear strain that were ignored or not fully accounted in the existing solutions. The accuracy of this approach is also verified through comparisons of analysis results with those of established analytical solutions. Parametric studies are also performed to investigate the influence of the soil properties and the excitation frequencies on the pile head dynamic stiffness and damping of the pile-soil system.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Soils and Foundations 工程技术-地球科学综合

CiteScore

6.40

自引率

8.10%

发文量

审稿时长

5 months

期刊介绍： Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.