Géotechnique Letters最新文献

Growth, trends and prevalent topics in geotechnical engineering (1998–2022) using topic modelling 利用主题建模技术研究岩土工程学的增长、趋势和流行主题（1998-2022 年

Géotechnique Letters Pub Date : 2024-03-15 DOI: 10.1680/jgele.23.00097

F. Patino-Ramirez, C. O'Sullivan

{"title":"Growth, trends and prevalent topics in geotechnical engineering (1998–2022) using topic modelling","authors":"F. Patino-Ramirez, C. O'Sullivan","doi":"10.1680/jgele.23.00097","DOIUrl":"https://doi.org/10.1680/jgele.23.00097","url":null,"abstract":"Data gathered from 65 922 articles published in 30 geotechnical engineering journals between 1998 and 2022 were used to build a topic model and study the evolution of research output in the field. Over this period, the number of journal publications has grown exponentially with the number of articles published per year doubling every 6·3 years. The average citations per article (32·7) are skewed by highly cited articles, which make up 7·8% of the articles but account for 34·5 of the total number of citations. The articles’ country of origin has become increasingly centralised, with nearly half the articles published between 2018 and 2022 coming from China (39%) and the United States (10%). The topic distribution in the field has become highly specialised, with emerging topics being fuelled by: (a) new technologies and methods (i.e. data science and sensing techniques – the fastest-growing topics), and (b) rising applications seemingly related to mitigation (e.g. offshore and energy geotechnics) and adaptation (e.g. geohazards, mass movements) to climate change. As a consequence, traditional topics (e.g. soil and rock mechanics) have reduced their share in the field, but still remain among the most cited topics in geotechnical engineering.","PeriodicalId":501470,"journal":{"name":"Géotechnique Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140302723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A two-scale study on the influence of biopolymer enhancement on drying granular materials 关于生物聚合物增强对干燥颗粒材料影响的双尺度研究

Géotechnique Letters Pub Date : 2024-03-14 DOI: 10.1680/jgele.23.00046

R. Chen, M. Veveakis

引用次数: 0

Géotechnique Letters: Referees 2023 岩土工程通讯》：推荐人 2023

Géotechnique Letters Pub Date : 2024-03-01 DOI: 10.1680/jgele.2024.14.1.26

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Pore space characterization of Tamusu mudstone based on FIB/SEM 基于 FIB/SEM 的 Tamusu 泥岩孔隙特征描述

Géotechnique Letters Pub Date : 2024-01-01 DOI: 10.1680/jgele.23.00101

H. Yu, D. Yang, Y. Song, J. Huang, X. Qiu

引用次数: 0

Finite element analysis of ultimate lateral pressure of snowflake pile in undrained clay 未排水粘土中雪花桩极限侧压力的有限元分析

Géotechnique Letters Pub Date : 2023-12-01 DOI: 10.1680/jgele.23.00059

L. Gao, D. Lu, X. Gao

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Assessing grouting effects on ground settlement in rectangular pipe jacking: field monitoring and centrifuge model tests 评估矩形顶管施工中灌浆对地面沉降的影响：现场监测和离心机模型试验

Géotechnique Letters Pub Date : 2023-12-01 DOI: 10.1680/jgele.23.00056

M. Cao, X. Ma

引用次数: 0

Elastoplastic solution for cylindrical cavity contraction in unsaturated soils under constant suction conditions 恒定吸力条件下非饱和土壤中圆柱形空腔收缩的弹塑性解决方案

Géotechnique Letters Pub Date : 2023-12-01 DOI: 10.1680/jgele.23.00080

J.-L. Zhang, E.-C. Sun, P.-Z. Zhuang, H.-S. Yu, H. Yang

引用次数: 0

Permeability of polymer-modified kaolinite and fly ash-kaolinite mixtures under different confining pressures and OCRs 不同约束压力和 OCR 条件下聚合物改性高岭石和粉煤灰-高岭石混合物的渗透性

Géotechnique Letters Pub Date : 2023-12-01 DOI: 10.1680/jgele.23.00058

S.-L. Li, R.-J. He, X. Kang

{"title":"Permeability of polymer-modified kaolinite and fly ash-kaolinite mixtures under different confining pressures and OCRs","authors":"S.-L. Li, R.-J. He, X. Kang","doi":"10.1680/jgele.23.00058","DOIUrl":"https://doi.org/10.1680/jgele.23.00058","url":null,"abstract":"With the goal of promoting the treatment and reuse of fly ash, a series of permeability tests were conducted to investigate the hydraulic conductivity (K) of polymer (chitosan, PEO, xanthan gum)-fly ash-kaolinite systems under different confining pressures and OCRs. The addition of fly ash increased the K of kaolinite due to changes in particle size and gradation, and the effect is not significant when the fly ash content is below 30%. PEO and xanthan gum increased the K of kaolinite, with xanthan gum having a more significant effect, while chitosan reduces it. For fly ash-kaolinite mixtures, chitosan and xanthan gum had negligible impact on the K, whereas PEO increased it by an order of magnitude. In addition, confining pressure restricts the flow channel while increasing the effective contact area between polymers and soil particles. The Koc/Knc of polymer-modified kaolinite rapidly converges at high OCRs, while the that of polymer-modified fly ash-kaolinite converges at low OCRs. This study provides insight into the effects of polymer modification on the hydraulic conductivity of fly ash-clay mixtures and provides guidance for the application of polymer modification technology in soil improvement.","PeriodicalId":501470,"journal":{"name":"Géotechnique Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138626030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fibre optic sensing for strain-field measurement in geotechnical laboratory experiments 用于岩土工程实验室试验应变场测量的光纤传感

Géotechnique Letters Pub Date : 2023-11-16 DOI: 10.1680/jgele.23.00048

G. Della Ragione, C. N. Abadie, X. Xu, T. S. da Silva Burke, T. Möller, E. Bilotta

{"title":"Fibre optic sensing for strain-field measurement in geotechnical laboratory experiments","authors":"G. Della Ragione, C. N. Abadie, X. Xu, T. S. da Silva Burke, T. Möller, E. Bilotta","doi":"10.1680/jgele.23.00048","DOIUrl":"https://doi.org/10.1680/jgele.23.00048","url":null,"abstract":"Strain measurement inside the soil body in three-dimensional (3D) experiments is a real challenge for physical modellers in geotechnics. The use of fibre optic sensing offers the possibility of continuous measurement of the strain at depth with high spatial and temporal resolution in small-scale laboratory experiments. Despite the technology not being fully ready yet for centrifuge experiments, this is an important development in geotechnics. This paper explores the capacities of distributed fibre optic sensing (DFOS) as a solution for direct soil strain profile measurement at depth. A series of small-scale plane-strain experiments is used to simulate the simple case of the formation of a downwards subsidence. DFOS cables are laid in the soil specimen, and strains are directly compared with the soil movement, recorded with cameras through particle image velocimetry. Results indicate the ability of DFOS in detecting soil movements and underline the typical signature strain profile expected during this type of experiments. Finite-element analyses are carried out to further underpin the consequences of performing these tests at 1g and extend the findings to potential applications in 3D and on the geotechnical centrifuge. This shows promising results for detection of soil strain profiles inside the soil body in 3D.","PeriodicalId":501470,"journal":{"name":"Géotechnique Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138535395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel procedure for measuring the saturation of the pore-pressure system in piezocone tips 测量压电锥尖孔压系统饱和度的新方法

Géotechnique Letters Pub Date : 2023-11-10 DOI: 10.1680/jgele.23.00034

I. Rocchi, M. Marcolongo, L. Tonni, G. Gottardi

{"title":"Novel procedure for measuring the saturation of the pore-pressure system in piezocone tips","authors":"I. Rocchi, M. Marcolongo, L. Tonni, G. Gottardi","doi":"10.1680/jgele.23.00034","DOIUrl":"https://doi.org/10.1680/jgele.23.00034","url":null,"abstract":"Uncertainty in the measurement of the cone penetration test with pore-water pressure measurement (i.e. piezocone testing CPTU) can be caused by an equipment malfunction, poor calibration and maintenance of sensors, but also by a lack of saturation of the piezocone. The standards allow for many different options in terms of filters, saturation fluids and methodologies. The novel device described herein aims at measuring in a very simple manner the degree of saturation of the piezocone prior to testing. Because the quality of pore-water pressure measurements can currently only be assessed a posteriori – that is, after the test has been completed, or at best while testing, the methodology proposed herein has the potential to provide quality benchmarks for CPTU. The tool measures a parameter inspired by the well-established Skempton coefficient B, which is routinely used to estimate the sample saturation prior to laboratory testing. Furthermore, by performing the same measurement after a CPTU test, it is possible to assess whether saturation was lost during cone penetration. The paper describes a set of preliminary results that show a clear correlation between the saturation degree of filters and/or of the overall pore-pressure measurement system and the B parameter proposed, thus providing a proof of concept in laboratory settings.","PeriodicalId":501470,"journal":{"name":"Géotechnique Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138535397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0