A method for estimating coefficient of lateral earth pressure based on cone penetration tests

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2024-06-01 DOI:10.1016/j.sandf.2024.101474

Donggun Nam, Qaisar Abbas, Junhwan Lee

{"title":"A method for estimating coefficient of lateral earth pressure based on cone penetration tests","authors":"Donggun Nam, Qaisar Abbas, Junhwan Lee","doi":"10.1016/j.sandf.2024.101474","DOIUrl":null,"url":null,"abstract":"<div>The coefficient of lateral earth pressure at rest (K0) is a key state soil variable for the design of foundations and underground structures, characterizes in-situ stress state and soil condition. In this study, a method for the in-situ estimation of K0 using the cone penetration test (CPT) is proposed considering vertical and inclined cone resistances (qc). For this purpose, a series of laboratory CPTs in a soil chamber were conducted to obtain and characterize vertical and inclined qc values at various inclination angles (θ) and relative densities (DR). It was observed that the values of qc increased as θ increased, which was more pronounced at higher DR. Coupled Eulerian-Lagrangian (CEL) finite element analyses were performed to quantify the values of inclined qc at various cone penetration and soil conditions. Based on results from laboratory CPTs and CEL analyses, a CPT-based K0 correlation model was established, which was given as a function of vertical and inclined qc values. The model parameter for the proposed method was evaluated and quantified. The validity of the proposed method was confirmed from the comparison with case examples.</div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"64 3","pages":"Article 101474"},"PeriodicalIF":3.3000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0038080624000520/pdfft?md5=6332fbc495ae3d617c0212322b941546&pid=1-s2.0-S0038080624000520-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soils and Foundations","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0038080624000520","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 coefficient of lateral earth pressure at rest (K₀) is a key state soil variable for the design of foundations and underground structures, characterizes in-situ stress state and soil condition. In this study, a method for the in-situ estimation of K₀ using the cone penetration test (CPT) is proposed considering vertical and inclined cone resistances (q_c). For this purpose, a series of laboratory CPTs in a soil chamber were conducted to obtain and characterize vertical and inclined q_c values at various inclination angles (θ) and relative densities (D_R). It was observed that the values of q_c increased as θ increased, which was more pronounced at higher D_R. Coupled Eulerian-Lagrangian (CEL) finite element analyses were performed to quantify the values of inclined q_c at various cone penetration and soil conditions. Based on results from laboratory CPTs and CEL analyses, a CPT-based K₀ correlation model was established, which was given as a function of vertical and inclined q_c values. The model parameter for the proposed method was evaluated and quantified. The validity of the proposed method was confirmed from the comparison with case examples.

查看原文本刊更多论文

基于锥入度试验的侧向土压力系数估算方法

静止侧向土压力系数（K0）是地基和地下结构设计中的一个关键土壤状态变量，表征了原位应力状态和土壤条件。本研究提出了一种利用锥入度试验（CPT）原位估算 K0 的方法，考虑了垂直和倾斜锥阻力（qc）。为此，在一个土壤室中进行了一系列实验室 CPT，以获得并描述不同倾角 (θ) 和相对密度 (DR) 下的垂直和倾斜 qc 值。结果表明，qc 值随着 θ 的增大而增大，在 DR 较高时更为明显。进行了欧拉-拉格朗日（CEL）耦合有限元分析，以量化不同锥入度和土壤条件下的倾斜 qc 值。根据实验室 CPT 和 CEL 分析的结果，建立了基于 CPT 的 K0 相关模型，该模型是垂直和倾斜 qc 值的函数。对建议方法的模型参数进行了评估和量化。通过与实例的比较，确认了所建议方法的有效性。

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

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.