{"title":"基于锥入度试验的侧向土压力系数估算方法","authors":"Donggun Nam, Qaisar Abbas, Junhwan Lee","doi":"10.1016/j.sandf.2024.101474","DOIUrl":null,"url":null,"abstract":"<div><p>The coefficient of lateral earth pressure at rest (K<sub>0</sub>) 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 K<sub>0</sub> using the cone penetration test (CPT) is proposed considering vertical and inclined cone resistances (q<sub>c</sub>). For this purpose, a series of laboratory CPTs in a soil chamber were conducted to obtain and characterize vertical and inclined q<sub>c</sub> values at various inclination angles (θ) and relative densities (D<sub>R</sub>). It was observed that the values of q<sub>c</sub> increased as θ increased, which was more pronounced at higher D<sub>R</sub>. Coupled Eulerian-Lagrangian (CEL) finite element analyses were performed to quantify the values of inclined q<sub>c</sub> at various cone penetration and soil conditions. Based on results from laboratory CPTs and CEL analyses, a CPT-based K<sub>0</sub> correlation model was established, which was given as a function of vertical and inclined q<sub>c</sub> 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.</p></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":"{\"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><p>The coefficient of lateral earth pressure at rest (K<sub>0</sub>) 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 K<sub>0</sub> using the cone penetration test (CPT) is proposed considering vertical and inclined cone resistances (q<sub>c</sub>). For this purpose, a series of laboratory CPTs in a soil chamber were conducted to obtain and characterize vertical and inclined q<sub>c</sub> values at various inclination angles (θ) and relative densities (D<sub>R</sub>). It was observed that the values of q<sub>c</sub> increased as θ increased, which was more pronounced at higher D<sub>R</sub>. Coupled Eulerian-Lagrangian (CEL) finite element analyses were performed to quantify the values of inclined q<sub>c</sub> at various cone penetration and soil conditions. Based on results from laboratory CPTs and CEL analyses, a CPT-based K<sub>0</sub> correlation model was established, which was given as a function of vertical and inclined q<sub>c</sub> 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.</p></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}","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}
A method for estimating coefficient of lateral earth pressure based on cone penetration tests
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.
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.
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