Geotextiles and Geomembranes最新文献_第6页

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 : 2025-03-28 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":"2025-03-28","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

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 : 2025-03-26 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":"2025-03-26","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

Consolidation of slurry treated by PHDs-VP incorporating development process of clogged zone 含堵塞区发展过程的ph - vp处理浆体固结

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-03-22 DOI: 10.1016/j.geotexmem.2025.03.003

Kang Yang , Mengmeng Lu , Kuo Li , Xiusong Shi

{"title":"Consolidation of slurry treated by PHDs-VP incorporating development process of clogged zone","authors":"Kang Yang , Mengmeng Lu , Kuo Li , Xiusong Shi","doi":"10.1016/j.geotexmem.2025.03.003","DOIUrl":"10.1016/j.geotexmem.2025.03.003","url":null,"abstract":"<div><div>The prefabricated horizontal drains combined with vacuum preloading (PHDs-VP) method exhibits significant benefits in dredged slurry treatment. This study introduces an analytical model of slurry consolidation treated by PHDs-VP. In this model, the PHD is treated as a permeable boundary with a vacuum pressure. The governing equations are established by dividing the analytical unit into normal zone and clogged zone, and by incorporating the development process of the clogged zone. Numerical solutions are obtained utilizing the finite difference method. The accuracy and reliability of the solutions are validated through both degradation analysis and experimental verification. Furthermore, a parametrical analysis is conducted to investigate the influence of several key parameters on consolidation behavior. The results indicate that the clogging effect significantly retards the consolidation process, with a lower permeability coefficient or a greater thickness of the clogged zone resulting in a more pronounced reduction in the consolidation rate. Additionally, the consolidation rate decreases with the accelerated development of the clogged zone, and this effect becomes more pronounced with denser PHDs layout.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 4","pages":"Pages 897-908"},"PeriodicalIF":4.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682583","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

The effect of a bench on leakage through a cover: A field and numerical assessment 台架对盖层渗漏的影响：现场与数值评估

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-03-15 DOI: 10.1016/j.geotexmem.2025.02.005

Y.H. Fan , R. Kerry Rowe , R.W.I. Brachman , Jamie F. VanGulck

引用次数: 0

Shear behavior of saline soil-geotextile interfaces under freeze-thaw cycles 冻融循环作用下盐渍土-土工织物界面剪切特性

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-03-10 DOI: 10.1016/j.geotexmem.2025.03.001

Junli Gao, Lai Pan, Feiyu Liu, Yan Yang

{"title":"Shear behavior of saline soil-geotextile interfaces under freeze-thaw cycles","authors":"Junli Gao, Lai Pan, Feiyu Liu, Yan Yang","doi":"10.1016/j.geotexmem.2025.03.001","DOIUrl":"10.1016/j.geotexmem.2025.03.001","url":null,"abstract":"<div><div>Volume changes in soil caused by freeze-thaw cycles can affect the shear performance of the saline soil-geotextile interface. To investigate this issue, the study examined changes in shear strength, deformation characteristics, and failure modes of the saline soil-geotextile interface under different numbers of freeze-thaw cycles. The experimental results indicate that with the increase in freeze-thaw cycles, the shear stiffness of the interface initially increases and then decreases, demonstrating the reduction in elasticity and resistance to deformation caused by freeze-thaw cycles. And the enhancement of normal stress can effectively increase the density of the soil and the adhesion at the interface, thereby improving shear stiffness. Meanwhile, the salt content in the soil also significantly impacts the mechanical properties, with notable changes in the dynamic characteristics of the interface as the salt content varies. Furthermore, after freeze-thaw actions, the soil becomes loose, reduces in integrity, features uneven surfaces, and sees increased internal porosity leading to slip surfaces. Trend analysis from this study provides new insights into the failure mechanisms at the saline soil-geotextile interface.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 4","pages":"Pages 867-881"},"PeriodicalIF":4.7,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579882","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

Influence of rainfall and drying periods on the performance of a large-scale segmental GRS wall model built with poorly draining local soil 降雨和干燥期对局部排水差的大尺度分段式GRS墙体模型性能的影响

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-03-09 DOI: 10.1016/j.geotexmem.2025.02.003

M.C. Santos , Yoo C , F.H.M. Portelinha

{"title":"Influence of rainfall and drying periods on the performance of a large-scale segmental GRS wall model built with poorly draining local soil","authors":"M.C. Santos , Yoo C , F.H.M. Portelinha","doi":"10.1016/j.geotexmem.2025.02.003","DOIUrl":"10.1016/j.geotexmem.2025.02.003","url":null,"abstract":"<div><div>The use of poorly draining local soils as backfill material in geosynthetic reinforced soil walls has become a common practice despite the known risks. With climate change effects, it is crucial to understand how these structures will perform under such extreme conditions. In this study, the performance of a large-scale model of a modular block geogrid-reinforced soil wall, using fine-grained backfill material, is evaluated under varying simulated rainfall intensities and drying periods. The model was constructed in a laboratory environment, enabling the implementation of an extensive instrumentation program designed to monitor soil suction, volumetric water content, and the resulting deformation and reinforcement strains. Tensile loads mobilized by the geogrid within the backfill soil and at the connection with block wall facing are discussed in the paper. The study demonstrates the satisfactory performance of a poorly draining reinforced soil wall even after prolonged and intense simulated rainfall. The low hydraulic conductivity of the well-compacted backfill soil, combined with significant surface runoff, helped maintain low levels of soil suction which reflects in apparent cohesion. Drying periods led to varying but significant rates of suction recovery influenced by rainfall-drying patterns. The findings indicate that rainfall intensities of 10 mm/h (240 mm/day) for over 7 days were insufficient to fully eliminate suction in a poorly draining geogrid-reinforced wall.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 4","pages":"Pages 847-866"},"PeriodicalIF":4.7,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579881","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

Use of soilbags to protect flexible pipes against repeated load effects 使用沙袋保护柔性管道免受重复载荷影响

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-02-27 DOI: 10.1016/j.geotexmem.2025.02.004

S.N. Moghaddas Tafreshi , A.F. Ahmadian , A.R. Dawson

{"title":"Use of soilbags to protect flexible pipes against repeated load effects","authors":"S.N. Moghaddas Tafreshi , A.F. Ahmadian , A.R. Dawson","doi":"10.1016/j.geotexmem.2025.02.004","DOIUrl":"10.1016/j.geotexmem.2025.02.004","url":null,"abstract":"<div><div>An investigation was made of the over-trench bridging effect provided by soilbags to reduce the pressure on, and vertical and horizontal diametral change (<em>VDC</em> and <em>HDC</em>) of, buried flexible pipes, along with reductions in trench surface settlement (<em>TSS</em>). Full-scale tests examined the effects of burial depth, soilbag width, number of soilbag layers and distance between layers in trenches with 250-mm diameter pipes subjected to 150 surface loading cycles that simulated vehicular traffic. <em>TSS</em> reduced most when a soilbag was nearest the surface, while positioning a soilbag over the pipe's crown best protected the pipe. The soilbag's width must exceed 1.2 times the loading surface diameter/width to prevent unhelpful downward (punching) movement of soilbags into the trench backfill. Increasing soilbag width beyond 1.6–2 times that diameter/width or using more than two (sometimes three) soilbag layers, delivers diminishing returns. Using one to four soilbag layers, <em>TSS</em>, <em>VDC</em> and pipe pressure reduce to 45-15%, 70-15% and 75-25% of the unreinforced values, respectively, though the improvement rates diminish with increasing layers. Overall, TSS and pipe protection are similarly sensitive to the positioning of two layers of soilbags, while the spacing between the layers has the opposite effect.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 4","pages":"Pages 823-846"},"PeriodicalIF":4.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510345","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

Deformation and load transfer of pile-supported foundation reinforced with soilbags raft cushion 土袋筏垫层加固桩承基础的变形与荷载传递

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-02-18 DOI: 10.1016/j.geotexmem.2025.01.005

Bowen Li, Sihong Liu, Xuelei Han, Yang Lu, Yuansheng Liu

{"title":"Deformation and load transfer of pile-supported foundation reinforced with soilbags raft cushion","authors":"Bowen Li, Sihong Liu, Xuelei Han, Yang Lu, Yuansheng Liu","doi":"10.1016/j.geotexmem.2025.01.005","DOIUrl":"10.1016/j.geotexmem.2025.01.005","url":null,"abstract":"<div><div>This study proposes a new pile-supported soilbags raft cushion for foundation treatment. A series of two-dimensional model tests were conducted on the reinforced foundation to investigate its deformation and load transfer characteristics. An analytical method was established to determine the surface pressure between the piles. The tests demonstrated that the soilbags raft cushion can reduce the differential settlement of the foundation by improving the uniformity of the load transfer. The deformation patterns and load transfer efficiency of the soilbags raft cushion reinforced foundation were found to be related to the pile spacing, the embedded depth of the pile top, the thickness of the soilbags raft cushion, and the external pressure applied to the foundation surface. The performance of soilbags raft cushion is more effective when the ratio of the embedded depth of the pile top to the pile spacing is at least one and the ratio of the thickness of the cushion to the embedded depth of the pile top is at least 0.2. The analytical method considers the relative pile-soil settlement and the elastic modulus of the soilbags raft cushion reinforced foundation, allowing for a reasonable evaluation of the surface pressure between the piles and the load transfer efficiency.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 3","pages":"Pages 811-821"},"PeriodicalIF":4.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427934","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

Evaluation of two-layered soils reinforced with 3D printed geogrid models under axisymmetric loading conditions 轴对称荷载条件下3D打印土工格栅模型加筋双层土的评价

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-02-16 DOI: 10.1016/j.geotexmem.2025.01.008

Gabriel M. Oliveira, Isabel M.C.F.G. Falorca

引用次数: 0

Numerical investigation of ground reinforced embankments: Structural geometry design 地基加筋土堤防的数值研究：结构几何设计

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2025-02-14 DOI: 10.1016/j.geotexmem.2025.01.006

Liang Xiao , Qingshan Meng , Shizhan Lv , Ting Yao , Yaxiong Liao

{"title":"Numerical investigation of ground reinforced embankments: Structural geometry design","authors":"Liang Xiao , Qingshan Meng , Shizhan Lv , Ting Yao , Yaxiong Liao","doi":"10.1016/j.geotexmem.2025.01.006","DOIUrl":"10.1016/j.geotexmem.2025.01.006","url":null,"abstract":"<div><div>Ground reinforced embankment (GRE) is a common and efficient rockfall mitigation measure. However, due to the diversity of geometric dimensions and composite components of the embankments worldwide, the design methods have not yet been unified. This article proposes a DEM-based framework for modeling the GREs impacted by rockfalls, and to optimize the structural design by comparing the block-intercepting performance. The numerical model based on MatDEM is validated by restoring the Peila's field tests, and the simulated materials are calibrated by comparing the laboratory test results. The design elements can be determined through simulated impact tests, with the site topography and rockfall trajectory as prerequisite information. The simulation test results show that the structural positions and cross-sectional shapes alter the interaction between rockfalls and embankments, thereby affecting the block-intercepting capacity. Under the impact of high-energy blocks, the characteristic of structural failure is that the extrusion of the downhill face is greater than the displacement of the uphill face, which can be used as a criteria to determine the reasonable design elements. The proposed framework can be applied to an actual site and maximize the cost-benefit performance of design depending on the site space and budget conditions.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 3","pages":"Pages 780-797"},"PeriodicalIF":4.7,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143420495","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