Numerical investigation of the effect of non-plastic fines on the behavior of an embankment on liquefiable soil subjected to earthquake

IF 4.2 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering Pub Date : 2025-04-18 DOI:10.1016/j.soildyn.2025.109427

Chedid Saade, Zheng Li, Sandra Escoffier, Luc Thorel

{"title":"Numerical investigation of the effect of non-plastic fines on the behavior of an embankment on liquefiable soil subjected to earthquake","authors":"Chedid Saade, Zheng Li, Sandra Escoffier, Luc Thorel","doi":"10.1016/j.soildyn.2025.109427","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a numerical investigation of the effects of non-plastic fines on the behavior of an embankment constructed on liquefiable soil. The numerical models, developed using OpenSees FEM platform and the PM4Sand constitutive model, simulate centrifuge tests of a homogeneous embankment constructed on liquefiable soil, with different fines contents (<span><math><msub><mrow><mi>f</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> = 0%, <span><math><msub><mrow><mi>f</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> = 5%, and <span><math><msub><mrow><mi>f</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> = 10%). The numerical models were subjected to both small (PGA=0.1 g) and high amplitude (PGA=0.2 g) base shakings. The performance of these numerical models was validated against the experimental results of centrifuge tests in terms of excess pore pressure, acceleration response and embankment deformation. Additionally, the effect of fines on soil liquefaction was examined using the validated numerical models. The results indicate that the presence of non-plastic fines increases the liquefaction resistance and significantly reduces the settlement of the embankment crest. The addition of non-plastic fines exhibits an improving and reinforcing effect on the liquefiable soil.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109427"},"PeriodicalIF":4.2000,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soil Dynamics and Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0267726125002209","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 0

Abstract

This study presents a numerical investigation of the effects of non-plastic fines on the behavior of an embankment constructed on liquefiable soil. The numerical models, developed using OpenSees FEM platform and the PM4Sand constitutive model, simulate centrifuge tests of a homogeneous embankment constructed on liquefiable soil, with different fines contents (

f_{c}

= 0%,

f_{c}

= 5%, and

f_{c}

= 10%). The numerical models were subjected to both small (PGA=0.1 g) and high amplitude (PGA=0.2 g) base shakings. The performance of these numerical models was validated against the experimental results of centrifuge tests in terms of excess pore pressure, acceleration response and embankment deformation. Additionally, the effect of fines on soil liquefaction was examined using the validated numerical models. The results indicate that the presence of non-plastic fines increases the liquefaction resistance and significantly reduces the settlement of the embankment crest. The addition of non-plastic fines exhibits an improving and reinforcing effect on the liquefiable soil.

查看原文本刊更多论文

非塑性粉粒对地震作用下液化土路基性能影响的数值研究

本研究提出了非塑性粉粒对液化土路基性能影响的数值研究。利用OpenSees FEM平台和PM4Sand本构模型建立的数值模型，模拟了在不同细粒含量（fc = 0%, fc = 5%和fc = 10%）的可液化土上施工的均质路堤的离心试验。数值模型受到小（PGA=0.1 g）和高振幅（PGA=0.2 g）基底振动的影响。在超孔隙压力、加速度响应和路堤变形方面，通过离心试验验证了数值模型的性能。此外，利用验证的数值模型考察了细粒对土壤液化的影响。结果表明，非塑性粉粒的存在增加了路基抗液化能力，显著降低了路堤波峰的沉降。非塑性粉粒的加入对可液化土具有改善和加固作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

期刊介绍： The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering. Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.