Geotextiles and Geomembranes最新文献_第8页

Experimental investigation of the capillary drainage performance of multilayer wicking fabric 多层排芯织物毛细排水性能的实验研究

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-10-01 Epub Date: 2025-05-25 DOI: 10.1016/j.geotexmem.2025.05.005

Yifan Wang , Yongkang Wu , Xu Li , Shaowei Wei , Hongye Yan

{"title":"Experimental investigation of the capillary drainage performance of multilayer wicking fabric","authors":"Yifan Wang , Yongkang Wu , Xu Li , Shaowei Wei , Hongye Yan","doi":"10.1016/j.geotexmem.2025.05.005","DOIUrl":"10.1016/j.geotexmem.2025.05.005","url":null,"abstract":"<div><div>Excessive moisture within subgrade layers significantly diminishes subgrade stiffness and induces pavement deformation. A multilayer wicking fabric (WF) composed of deeply grooved fibers was developed to regulate moisture in unsaturated fine-grained soils. This study introduces a novel methodology for determining the water retention curve (WRC) over the full suction range. At the same time, an efficient method for predicting WF's WRC via NMR technology was pointed, and clarifying the material's microscopic drainage mechanisms. Building on this foundation, soil column drying experiments were conducted to verify WF's moisture regulation capacity in unsaturated fine-grained soils. The results demonstrate that WF exhibits its highest water retention under conditions of elevated matric suction. Additionally, soil column drying experiments reveal that WF incorporation significantly reduces average soil water content and accelerates drying rates. WF's drainage efficiency shows high sensitivity to initial water contents (<em>w</em><sub>i</sub>) and evaporation segment length (<em>L</em>), with drainage performance increasing proportionally to these parameters. Moreover, soil water profiles are influenced by water retention capacity, capillary migration rate, and hydraulic gradient. These findings underscore the potential of multilayer wicking fabrics in managing moisture within fine-grained subgrades, presenting a novel and effective strategy for maintaining subgrade dryness and enhancing long-term stability.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 5","pages":"Pages 1168-1183"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical properties and mechanisms of soil-geotextile interface under constant normal Stiffness: Effect of freezing conditions 恒法向刚度条件下土-土工织物界面力学特性及机理：冻结条件的影响

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-10-01 Epub Date: 2025-05-05 DOI: 10.1016/j.geotexmem.2025.04.003

Pengfei He , Ce Zhuang , Xiangbing Kong , Boyang Liu , Fuping Zhang

{"title":"Mechanical properties and mechanisms of soil-geotextile interface under constant normal Stiffness: Effect of freezing conditions","authors":"Pengfei He , Ce Zhuang , Xiangbing Kong , Boyang Liu , Fuping Zhang","doi":"10.1016/j.geotexmem.2025.04.003","DOIUrl":"10.1016/j.geotexmem.2025.04.003","url":null,"abstract":"<div><div>A set of direct shear tests on the soil-geotextile interface (SGI) were conducted using a temperature-controlled constant normal stiffness (CNS) direct shear apparatus. This was done in order to evaluate the effects of normal stiffness, initial normal stress, soil water content, and temperature on SGI shear behavior and micro-deformation patterns. The observations indicate that all shear stress-shear displacement curves demonstrate strain-hardening characteristics, with SGI cohesion and friction angle increasing at higher normal stiffness and lower temperatures. At freezing conditions, water content significantly affects the interface friction angle, while this effect is minimal at positive temperatures. Normal stress increases with higher water content, lower temperatures, and higher normal stiffness. Shear stress initially rises with normal stress before decreases, with a more pronounced rise under sub-zero conditions. Normal stress shrinkage shows a positive correlation with normal stiffness. Micro-deformation analysis of soil particles at the interface indicates significant strain localization within the shear band, which is less pronounced under sub-zero temperatures compared to positive temperatures. These patterns of normal displacement vary across analysis points within the shear band, with the macroscopic normal displacement reflecting a cumulative effect of these microscopic variations.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 5","pages":"Pages 1094-1107"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consolidation solution of ground improved with artificial solidified crust–vertical drain 人工固化结皮改善地基固结液-垂直排水

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-10-01 Epub Date: 2025-05-20 DOI: 10.1016/j.geotexmem.2025.05.003

Long Chen , Desheng Li , Yonghui Chen , Yi Zhu , Kaizhe Shang

{"title":"Consolidation solution of ground improved with artificial solidified crust–vertical drain","authors":"Long Chen , Desheng Li , Yonghui Chen , Yi Zhu , Kaizhe Shang","doi":"10.1016/j.geotexmem.2025.05.003","DOIUrl":"10.1016/j.geotexmem.2025.05.003","url":null,"abstract":"<div><div>For artificial solidified crust (ASC)–vertical drain ground, an analytical consolidation solution (IB solution: regarding ASC as an impervious boundary) is proposed, which considers both the radial and vertical seepage. The orthogonal relation is proven and the computing efficiency is greatly improved. Then, consolidation solutions applicable to ASC–vertical drain ground, include IB solution, RDL solution (radial consolidation solution of double-layered ground) by Li et al. (2025), the quasi-rigorous solution by Tang and Onitsuka (2001), are compared and discussed. Compared to the quasi-rigorous solution, IB solution slightly overestimates the consolidation rate, but it can be promoted in engineering according to the following reasons: a) the convergence is easier to be achieved; b) its accuracy is not affected by the ratio of the vertical time factor to the radial time factor; c) common major parameters of ASC (i.e., thickness and permeability) have little effect on the applicability. By ignoring the vertical seepage in soil, IB solution degenerates to the simplified solution. Consolidation rate calculated by the simplified solution is slower than that of IB solution, and the solution can be a simple method for estimating the consolidation behavior of ASC–vertical drain ground.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 5","pages":"Pages 1145-1155"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Load-induced strain analysis in geocell reinforced footing systems 土工格室加固基础系统的荷载诱发应变分析

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-10-01 Epub Date: 2025-05-21 DOI: 10.1016/j.geotexmem.2025.05.002

Sarper Demirdogen, Ayhan Gurbuz

{"title":"Load-induced strain analysis in geocell reinforced footing systems","authors":"Sarper Demirdogen, Ayhan Gurbuz","doi":"10.1016/j.geotexmem.2025.05.002","DOIUrl":"10.1016/j.geotexmem.2025.05.002","url":null,"abstract":"<div><div>In performance-based design, it is crucial to understand deformation characteristics of geocell layers in soil under footing loads. To explore this, a series of laboratory loading tests were carried out to investigate the influence of varying parameters on the strain levels within the geocell layer in a sandy soil under axial strip footing loading. The results were analyzed in terms of maximum strain levels, strain variation along the geocell layer and the correlation between horizontal and vertical strains. In this study, the maximum observed strain levels for geocell-reinforced strip footing systems reached 2.3 % for horizontal (tensile) strain and 1.4 % for vertical (compressive) strain. Furthermore, most strain levels were concentrated within a distance of 1.5 times the footing width from the axis of strip footing. In geocell-reinforced footing systems, the interaction between horizontal and vertical strains becomes a key factor, with the ratio of horizontal to vertical cell wall strains ranging approximately from 1 to 2.5. The outcomes of this study are expected to contribute to the practical applications of geocell-reinforced footing systems.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 5","pages":"Pages 1156-1167"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leakage of composite cutoff walls through geomembrane joint defects 复合防渗墙通过土工膜接缝缺陷渗漏

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-10-01 Epub Date: 2025-04-30 DOI: 10.1016/j.geotexmem.2025.04.002

Lin-Feng Cao, Yu-Chao Li, Bo Huang

{"title":"Leakage of composite cutoff walls through geomembrane joint defects","authors":"Lin-Feng Cao, Yu-Chao Li, Bo Huang","doi":"10.1016/j.geotexmem.2025.04.002","DOIUrl":"10.1016/j.geotexmem.2025.04.002","url":null,"abstract":"<div><div>Composite geomembrane-soil-bentonite (CGSB) cutoff walls are effective barriers to contain highly aggressive contaminated groundwater. Defects in the geomembrane (GM) joint are inevitable during the installation, inducing preferential flow paths. An experimental device is designed to measure the flow rate <span><math><mrow><mi>Q</mi></mrow></math></span> through the joint defects of CGSB walls. Experiments and numerical simulations are performed to investigate the leakage characteristics of CGSB walls. The results show that soil-bentonite (SB) enters the joint under pressure and has a sealing effect similar to a hydrophilic gasket, which effectively reduces the <span><math><mrow><mi>Q</mi></mrow></math></span>. As the hydraulic head <span><math><mrow><msub><mi>h</mi><mi>w</mi></msub></mrow></math></span> increases, the internal gap width of the joint increases, resulting in a significant increase in <span><math><mrow><mi>Q</mi></mrow></math></span>. When <span><math><mrow><msub><mi>h</mi><mi>w</mi></msub></mrow></math></span> increases from 1 to 2 m, the maximum increase in the measured <span><math><mrow><mi>Q</mi></mrow></math></span> exceeds 17.6 times. The fracture pore diameter <span><math><mrow><msub><mi>d</mi><mi>f</mi></msub></mrow></math></span> of the joint filled with SB decreases by an order of magnitude compared to the case without SB filling. When <span><math><mrow><msub><mi>d</mi><mi>f</mi></msub></mrow></math></span> is less than 0.1 mm, the leakage of the CGSB wall is mainly controlled by <span><math><mrow><msub><mi>d</mi><mi>f</mi></msub></mrow></math></span>; while <span><math><mrow><msub><mi>d</mi><mi>f</mi></msub></mrow></math></span> is greater than 0.2 mm, the leakage is mainly affected by the interface transmissivity between the GM and SB.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 5","pages":"Pages 1063-1075"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on relationship of geogrid strain and settlement in the GRPS embankment under cyclic loading 循环荷载作用下GRPS路堤土工格栅应变与沉降关系研究

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-10-01 Epub Date: 2025-05-09 DOI: 10.1016/j.geotexmem.2025.04.005

Kaifu Liu, Shiyu Xu, Zhangbo Wan, Minjie Wen, Kairen Xue

{"title":"Investigation on relationship of geogrid strain and settlement in the GRPS embankment under cyclic loading","authors":"Kaifu Liu, Shiyu Xu, Zhangbo Wan, Minjie Wen, Kairen Xue","doi":"10.1016/j.geotexmem.2025.04.005","DOIUrl":"10.1016/j.geotexmem.2025.04.005","url":null,"abstract":"<div><div>Geosynthetic-reinforced pile-supported (GRPS) embankments provide an effective solution for mitigating subgrade settlement and enhancing service performance. This study presents a series of physical model tests aimed at gaining a comprehensive understanding of the mechanical behavior of geogrids in GRPS embankments. Effects of loading cycles, loading frequency, geogrid layer number, and pile type on geogrid strain and settlement were investigated. An empirical formula was introduced to evaluate the impact of these factors on the relationship between geogrid strain and settlement. The results demonstrate that both geogrid strain and settlement increase with loading cycles and loading frequency, while longer piles effectively reduce settlement. GRPS embankments with two geogrid layers exhibited smaller geogrid strain and settlement compared to those with a single layer. A power function incorporating the normalized geogrid strain increment ratio and settlement was developed to predict the geogrid strain variations under cyclic loading, with significant influence from the aforementioned factors. Furthermore, an application of the EBGEO method, modified to account for cyclic loadings, is proposed, which introduces a load parameter to account for the number of loading cycles. The results obtained using this modified method closely align with measured values, providing a more accurate estimation of geogrid strain development under cyclic loading.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 5","pages":"Pages 1108-1121"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Response of isolated footing on a geogrid reinforced fill and undisturbed peat subgrade soil system 土工格栅加筋填土-原状泥炭基土体系隔震基础响应

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-10-01 Epub Date: 2025-05-17 DOI: 10.1016/j.geotexmem.2025.05.001

Aykut Erol, Zulkuf Kaya

{"title":"Response of isolated footing on a geogrid reinforced fill and undisturbed peat subgrade soil system","authors":"Aykut Erol, Zulkuf Kaya","doi":"10.1016/j.geotexmem.2025.05.001","DOIUrl":"10.1016/j.geotexmem.2025.05.001","url":null,"abstract":"<div><div>The geotechnical behavior of undisturbed peat subgrade within geogrid-reinforced foundation systems remains inadequately understood, despite its high compressibility and engineering complexities. This study conducts a systematic investigation into the bearing capacity and settlement characteristics of an isolated footing on geogrid-reinforced fill over undisturbed peat, utilizing laboratory-scale model tests. Unlike previous studies that rely on disturbed peat samples, this research preserves natural stratification and in-situ response mechanisms, providing a more accurate representation of reinforcement performance. The results demonstrate that geogrid reinforcement enhances bearing capacity by up to 149.7 % and mitigates settlement by 79 %, with optimal reinforcement efficiency achieved at h/B = 0.3. These findings underscore the critical role of geogrid embedment depth, fill thickness, and relative density in optimizing foundation stability. By integrating undisturbed peat in physical modeling, this study bridges the gap between controlled laboratory experiments and real-world geotechnical applications, providing a framework for optimizing geosynthetic reinforcement strategies in highly compressible subgrades and paving the way for more reliable foundation designs in challenging ground conditions.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 5","pages":"Pages 1122-1144"},"PeriodicalIF":4.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Critical state mechanics-based arching model for pile-supported embankments 基于临界状态力学的桩基路堤拱模型

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-08-01 Epub Date: 2025-03-26 DOI: 10.1016/j.geotexmem.2025.03.002

Tuan A. Pham , Abdollah Tabaroei , Daniel Dias , Jie Han

{"title":"Critical state mechanics-based arching model for pile-supported embankments","authors":"Tuan A. Pham , Abdollah Tabaroei , Daniel Dias , Jie Han","doi":"10.1016/j.geotexmem.2025.03.002","DOIUrl":"10.1016/j.geotexmem.2025.03.002","url":null,"abstract":"<div><div>The study and application of soil arching theory in geosynthetic-reinforced pile-supported (GRPS) embankments have gained increasing attention, as accurate arching estimation significantly influences load-deflection behavior of structures. While most existing models rely on Rankine's earth pressure theory, which applies primarily to granular soils and neglects cohesion effects. This paper employs three-dimensional numerical simulations to examine the impact of soil cohesion on soil arching mechanisms in pile-supported embankments. Results indicate that cohesion enhances load transfer to piles, with arching efficacy increasing nonlinearly before stabilizing at higher cohesion values. Building on these findings, the ground reaction curve (GRC) model is proposed to predict arching behavior in both cohesive and non-cohesive embankments at various deformation stages. By integrating critical state soil mechanics with the concentric arch model, the transition between maximum and critical arching states is captured through changes in the mobilized friction angle with relative displacement. Model validation against two well-instrumented case studies demonstrates its accuracy, particularly in accounting for soil cohesion. Moreover, the maximum arching model better predicts GRPS embankments under small deformations (relative displacement <4 %), while the critical arching model is more suitable for large deformations (relative displacement >6 %). The proposed model effectively captures arching behavior improvements in both cohesive and non-cohesive soils.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 4","pages":"Pages 909-937"},"PeriodicalIF":4.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Model tests on wicking geosynthetic composite reinforced bases over weak subgrade 软弱地基上吸湿土工合成复合材料加筋地基模型试验

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-08-01 Epub Date: 2025-03-28 DOI: 10.1016/j.geotexmem.2025.03.006

Minghao Liu , Jiming Liu , Sam Bhat , Yongxuan Gao , Cheng Lin

{"title":"Model tests on wicking geosynthetic composite reinforced bases over weak subgrade","authors":"Minghao Liu , Jiming Liu , Sam Bhat , Yongxuan Gao , Cheng Lin","doi":"10.1016/j.geotexmem.2025.03.006","DOIUrl":"10.1016/j.geotexmem.2025.03.006","url":null,"abstract":"<div><div>Road performance is significantly enhanced by incorporating geosynthetics through their reinforcement and drainage functions. This study introduces a novel geosynthetic that integrates these functions. It is made of biaxial polypropylene geogrids heat-bonded to wicking nonwoven geotextiles (WNWGs). WNWGs are chemically treated to be hydrophilic and thus possess rapid wetting and wicking properties while preserving the large lateral drainage functionality of conventional nonwoven geotextiles. To assess the combined reinforcement and drainage performance of this material, a series of model tests including rainfall simulation and plate loading tests were performed on the WNWG-geogrid composite reinforced bases over weak subgrade using a customized model test apparatus. The results confirmed that the inclusion of wicking geosynthetic composite significantly enhanced drainage, stiffness, and bearing capacity of road bases compared to the conventional nonwoven geotextile-geogrid reinforcement and the unreinforced condition. The modulus improvement factor (MIF) for this wicking composite was 2.74 as compared to 1.46 for the conventional nonwoven geotextile-geogrid reinforcement. The findings from this study demonstrate the promising performance of this new composite and provide a valuable reference for full-scale tests and applications on roads.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 4","pages":"Pages 938-949"},"PeriodicalIF":4.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction method for lateral deformation of PVD-improved ground under vacuum preloading 真空预压下pvd加固地基侧向变形预测方法

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-08-01 Epub Date: 2025-04-05 DOI: 10.1016/j.geotexmem.2025.03.008

Fang Xu , Junfang Yang , Qichang Wu , Qi Yang , Yitian Lu , Wenqian Hao

{"title":"Prediction method for lateral deformation of PVD-improved ground under vacuum preloading","authors":"Fang Xu , Junfang Yang , Qichang Wu , Qi Yang , Yitian Lu , Wenqian Hao","doi":"10.1016/j.geotexmem.2025.03.008","DOIUrl":"10.1016/j.geotexmem.2025.03.008","url":null,"abstract":"<div><div>A series of finite element analyses, conducted on the basis of modified triaxial tests incorporating radial drainage, were carried out to investigate the lateral deformation and stress state characteristics of prefabricated vertical drain (PVD) unit cells under vacuum preloading. The analyses revealed that the inward horizontal strain of the unit cell increases approximately linearly with the vacuum pressure (<em>P</em><sub>v</sub>) but decreases non-linearly with an increase in the initial vertical effective stress (<em>σ′</em><sub>v0</sub>). The variations in the effective stress ratio, corresponding to the median excess pore water pressure during vacuum preloading of the PVD unit cell, were elucidated in relation to the <em>P</em><sub>v</sub> and <em>σ′</em><sub>v0</sub> using the simulation data. Relationships were established between the normalized horizontal strain and normalized effective stress ratio, as well as between the normalized stress ratio and a composite index parameter that quantitatively captures the effects of vacuum pressure, initial effective stress, and subsoil consolidation characteristics. These relationships facilitate the prediction of lateral deformation in PVD-improved grounds subjected to vacuum preloading, utilizing fundamental preloading conditions and soil properties. Finally, the proposed methodology was applied to analyze two field case histories, and its validity was confirmed by the close correspondence between the predicted and measured lateral deformation.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 4","pages":"Pages 1021-1034"},"PeriodicalIF":4.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0