Geotextiles and Geomembranes最新文献_第4页

Study on the hydraulic properties of internally unstable soil-nonwoven geotextile systems: Boundary values and preliminary estimates 内部不稳定土壤-无纺土工织物系统的水力特性研究：边界值和初步估算

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-13 DOI: 10.1016/j.geotexmem.2024.11.002

Ennio M. Palmeira , Matheus V. Souza , Dellane S.C. Santos , Ivonne A.M.G. Góngora

{"title":"Study on the hydraulic properties of internally unstable soil-nonwoven geotextile systems: Boundary values and preliminary estimates","authors":"Ennio M. Palmeira , Matheus V. Souza , Dellane S.C. Santos , Ivonne A.M.G. Góngora","doi":"10.1016/j.geotexmem.2024.11.002","DOIUrl":"10.1016/j.geotexmem.2024.11.002","url":null,"abstract":"<div><div>Internally unstable soils can pose severe conditions to granular and geotextile filters in geotechnical engineering works. Regarding the latter, several researchers have investigated the behaviour of such filters in contact with internally unstable soils and severe clogging and flow rate reductions of soil-geotextile filter systems have been observed in several cases. This paper presents a study on the prediction of boundary values for hydraulic properties of nonwoven geotextile filters in cohesionless internally unstable soils. A broad survey on results of filtration tests present in the literature was carried out for the development of a database for the study. The results obtained show that significant reductions in soil-geotextile system permeability coefficient and flow rate may occur independent on the type of test carried out, quite often as a consequence of poor hydraulic behaviour of the soil rather than geotextile filter clogging. The study has identified the level of importance of relevant parameters to assess potential malfunction of the soil-geotextile system and equations were developed to predict lower bound values and estimates of soil-geotextile system permeability coefficient for preliminary analyses.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 588-606"},"PeriodicalIF":4.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840854","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

Interface shear creep behavior between the nonwoven geotextile and the geomembrane pre/post peak strength 非织造土工布与土工膜峰值强度前后界面剪切蠕变行为

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-13 DOI: 10.1016/j.geotexmem.2024.12.001

Jianyong Shi , Yuchen Zhang , Gaojie Xu , Wei Dai , Zhanlei Liu

{"title":"Interface shear creep behavior between the nonwoven geotextile and the geomembrane pre/post peak strength","authors":"Jianyong Shi , Yuchen Zhang , Gaojie Xu , Wei Dai , Zhanlei Liu","doi":"10.1016/j.geotexmem.2024.12.001","DOIUrl":"10.1016/j.geotexmem.2024.12.001","url":null,"abstract":"<div><div>In landfills, shear creep of the liner interface occurs after some shear displacements under the influence of a sustained load from waste. In this paper, an apparatus was developed to conduct shear creep tests on interfaces after different initial shear displacements, and experimental investigations were performed on the shear creep behavior of the geotextile and geomembrane interfaces pre/post peak strength. The results demonstrated that the initial instantaneous displacement and the steady displacement rate at the interface increased with increasing shear stress. The initial instantaneous displacement at the geomembrane‒geotextile interface in the post-peak tests was reduced compared with that in the pre-peak tests, whereas the displacement rate at elevated shear stress levels was greater in the post-peak tests than in the pre-peak tests. The creep behavior of the interface was influenced by both the initial shear displacement and the material interaction. An analysis of the Nishihara model revealed that the shear modulus of the Hooke body at the interface increased with increasing shear stress in the pre-peak test, whereas it decreased in the post-peak test as the shear stress increased. The difference in calculated creep time from the 30-day test results and from 3-day creep test results was approximately 8.9%.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 577-587"},"PeriodicalIF":4.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840853","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 geogrid reinforcement on the cracking characteristics of expansive soils: A laboratory study 土工格栅加固对膨胀土开裂特性的影响：实验室研究

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-07 DOI: 10.1016/j.geotexmem.2024.11.014

Rui Zhang , Yu Zhou , Yipeng Guo , JianLong Zheng , Yufan Deng , Tian Lan

{"title":"Influence of geogrid reinforcement on the cracking characteristics of expansive soils: A laboratory study","authors":"Rui Zhang , Yu Zhou , Yipeng Guo , JianLong Zheng , Yufan Deng , Tian Lan","doi":"10.1016/j.geotexmem.2024.11.014","DOIUrl":"10.1016/j.geotexmem.2024.11.014","url":null,"abstract":"<div><div>Expansive soils are susceptible to cracking due to significant moisture fluctuations, which can potentially lead to structural instability. Although geogrid reinforcement is widely used to control soil swelling and shrinkage, its effects on cracking behavior are not fully understood. This study investigates the influence of geogrid reinforcement on the cracking behavior of expansive soils by comparing soil samples reinforced with two layers of geogrid to unreinforced samples under evaporation conditions. Crack development was monitored using high-resolution imaging and fluorescence tracing to measure crack depth and calculate surface crack ratio. Additionally, moisture content distribution and evaporation rates were assessed. The results show that geogrid reinforcement reduced the total crack ratio by 1.34% and decreased average crack depth by 43.5%, leading to a more uniform crack distribution with smaller openings. Both internal and external cracks facilitated moisture exchange between the soil and atmosphere. The frictional and interlocking effects at the soil-geogrid interface effectively inhibited cracking and reduced moisture migration. The uniaxial geogrid also induced anisotropy crack restraint, with environmental exposure and geogrid orientation playing critical roles in crack control. Overall, these findings demonstrate the effectiveness of geogrids in enhancing the stability of expansive soils and limiting atmospheric influence through crack suppression.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 545-558"},"PeriodicalIF":4.7,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797872","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

Field test of geosynthetic-reinforced floating pile-supported embankments on soft soil 软土上土工合成筋浮桩支撑路堤的现场试验

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-04 DOI: 10.1016/j.geotexmem.2024.11.010

Rui Rui , Shi-kai He , Long-fan Peng , S.J.M. Van Eekelen , Liang-hao Li , Yu-qiu Ye

{"title":"Field test of geosynthetic-reinforced floating pile-supported embankments on soft soil","authors":"Rui Rui , Shi-kai He , Long-fan Peng , S.J.M. Van Eekelen , Liang-hao Li , Yu-qiu Ye","doi":"10.1016/j.geotexmem.2024.11.010","DOIUrl":"10.1016/j.geotexmem.2024.11.010","url":null,"abstract":"<div><div>This study conducted field tests on geosynthetic-reinforced floating pile-supported embankments to evaluate the load transfer mechanism and embankment deformation during embankment construction. Vertical pressures on pile caps and subsoils between piles, geosynthetic strains, settlement of pile caps and subsoils between piles, and settlement of the embankment at different elevations were measured throughout the embankment construction. Test results showed that the maximum settlement of the pile cap was approximately 66% of subsoils between the piles. Due to the large settlement of the floating piles, the soil arching was not significantly mobilized. The geosynthetic reinforcement exhibited a maximum tensile strain of 0.2% at the end of embankment construction, indicating a mobilization of low tensioned membrane effect. The predicted equal settlement heights at adjacent piles center and the diagonal pile center were close with an average value of approximately 1.23 times the pile net spacing. The measured vertical pressures on subsoil between piles were compared with calculated results using available analytical models from the literature. The analytical models underestimated the vertical pressures on the subsoils between piles, while the modified Terzaghi's model showed better agreement with the measured results than other analytical models.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 528-544"},"PeriodicalIF":4.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797865","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

A novel two-layer composite geomembrane lining structure to mitigate frost damage in cold-region canals: Model test and numerical simulation 减轻寒冷地区运河冻害的新型双层复合土工膜衬里结构：模型试验和数值模拟

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-04 DOI: 10.1016/j.geotexmem.2024.11.013

Haoyuan Jiang , Mingyi Zhang , Zhengzhong Wang , Yi Wang , Zhengyi Wang , Xinjian Sun

{"title":"A novel two-layer composite geomembrane lining structure to mitigate frost damage in cold-region canals: Model test and numerical simulation","authors":"Haoyuan Jiang , Mingyi Zhang , Zhengzhong Wang , Yi Wang , Zhengyi Wang , Xinjian Sun","doi":"10.1016/j.geotexmem.2024.11.013","DOIUrl":"10.1016/j.geotexmem.2024.11.013","url":null,"abstract":"<div><div>The canal is crucial for water diversion projects, but it is susceptible to frost damage. To address this, a two-layer composite geomembrane lining structure (TLCGLS) was proposed that regulates the interaction between canal lining and frozen soil. Model tests were conducted to investigate its anti-frost heave effectiveness. Considering the interaction among the lining, two-layer composite geomembranes (TLCGs), and frozen soil, a canal frost heave model with heat-water-mechanical coupling was developed. The influence of canal cross-section shapes and TLCGs arrangements on anti-frost heave performance and mechanism of TLCGLS were discussed. Results show that TLCGLS reduces uneven frost heave degree and compressive/tensile strains of the lining by 35%, 29%, and 28% respectively. During melting, it rapidly reduces frost heave, tangential deformation, and strain with minimal residual effects. TLCGLS demonstrates strong resetting ability and excellent anti-frost heave performance. It is particular suitable for arc-bottomed trapezoidal canals. However, excessive reduction in friction between TLCGs weakens arching effect of the bottom lining, increasing tensile stress and safety risks. TLCGLS with geomembrane-geotextile contact exhibits superior anti-frost heave performance, mitigating compressive stress by over 50% while meeting design requirements for tensile stress. These findings provide a theoretical basis and technical solution for mitigating frost damage in canals.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 510-527"},"PeriodicalIF":4.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797873","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 influence of geosynthetic properties on their shear behaviors at the interface with frozen soil 土工合成材料性能对其与冻土界面剪切性能的影响

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-12-01 DOI: 10.1016/j.geotexmem.2024.11.011

Pengfei He , Guangliang Hou , Haitao Cao , Feng Yue

{"title":"The influence of geosynthetic properties on their shear behaviors at the interface with frozen soil","authors":"Pengfei He , Guangliang Hou , Haitao Cao , Feng Yue","doi":"10.1016/j.geotexmem.2024.11.011","DOIUrl":"10.1016/j.geotexmem.2024.11.011","url":null,"abstract":"<div><div>This paper investigates the shear properties of the interfaces between sand and short-staple nonwoven geotextile (GT1), long-staple nonwoven geotextile (GT2), and geomembrane (GM) under varying conditions of testing temperature, sand moisture content, and normal stress through temperature-controlled direct shear tests. The results reveal that the shear stress-shear displacement curves for the sand-GT1 and sand-GM interfaces can be broadly categorized into an elastic deformation stage, a nonlinear growth stage, and a stable stage. However, the sand-GT2 interface displays a continuously increasing trend throughout the experiment. The peak friction angles of the interfaces increase significantly as the temperature decreases, following the order GT1 > GT2 > GM. The average residual friction angle of sand with GT1, GT2, and GM decreased by 14.8%, 10.4%, and 31.1%, respectively, compared to the peak friction angle. The peak cohesion at the sand-GM interface is relatively weaker than that at the sand-GT1 and sand-GT2 interfaces. The shear mechanisms between frozen soil and geotextiles involve ice cementation, rolling, interlocking, and fiber tensioning, while the shear mechanisms between frozen soil and GM comprise ice cementation, rolling, indentation, and plowing.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 2","pages":"Pages 497-509"},"PeriodicalIF":4.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756792","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

EDITORIAL: Best papers published in Geotextiles and Geomembranes in 2023 社论：2023年发表在土工织物和土工膜上的最佳论文

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-11-29 DOI: 10.1016/j.geotexmem.2024.11.012

引用次数: 0

Hydro-mechanical behaviour of composite-geosynthetic-reinforced soil walls with marginal lateritic backfills through instrumented model tests 通过仪器模型试验研究边缘红土回填的复合土工合成材料加固土墙的水力学行为

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-11-26 DOI: 10.1016/j.geotexmem.2024.11.007

K.A. Dhanya, P.V. Divya

{"title":"Hydro-mechanical behaviour of composite-geosynthetic-reinforced soil walls with marginal lateritic backfills through instrumented model tests","authors":"K.A. Dhanya, P.V. Divya","doi":"10.1016/j.geotexmem.2024.11.007","DOIUrl":"10.1016/j.geotexmem.2024.11.007","url":null,"abstract":"<div><div>To examine the hydro-mechanical behavior of Geosynthetic Reinforced Soil Walls (GRSW) backfilled with locally available marginal lateritic soils, physical model tests were conducted during construction, surcharge loading, and rainfall infiltration. Various reinforcements were tested, including a conventional geogrid (GG) and two types of composite geosynthetic reinforcements (CGR) with equivalent stiffness but different configurations. The results showed that suction was maintained throughout surcharging, but during rainfall infiltration, the GG model lost suction after 12,240 min, while both CGRs retained it. Strain evaluations indicated that all reinforcements remained within serviceability limits during surcharging, but the GG model exceeded these limits during rainfall, while the CGRs stayed within acceptable limits with minimal strain increases. Additionally, the GG model showed a 61% increase in facing deformation during rainfall, exceeding serviceability limits, whereas the CGRs remained within permissible limits. The study emphasizes the importance of cautious use of marginal soils in backfill applications. These soils can still be suitable for GRSW when reinforced with composite geosynthetics, especially CGR made of polyester geogrids with non-woven geotextile bonded longitudinally to the polyester strips. This configuration demonstrated superior performance by reducing facing deformation through better drainage and improved soil-reinforcement interaction.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 474-495"},"PeriodicalIF":4.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142718411","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

Rate-dependent tensile response of Polyvinyl Chloride geomembranes 聚氯乙烯土工膜随速率变化的拉伸响应

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-11-25 DOI: 10.1016/j.geotexmem.2024.11.004

Nesrin Akel , Guillaume Stoltz , Antoine Wautier , François Nicot , Nathalie Touze

{"title":"Rate-dependent tensile response of Polyvinyl Chloride geomembranes","authors":"Nesrin Akel , Guillaume Stoltz , Antoine Wautier , François Nicot , Nathalie Touze","doi":"10.1016/j.geotexmem.2024.11.004","DOIUrl":"10.1016/j.geotexmem.2024.11.004","url":null,"abstract":"<div><div>One of the challenge that face the effectiveness of Polyvinyl Chloride geomembranes (PVC GMs) as a hydraulic barrier is the capacity to withstand unexpected mechanical actions, particularly tensile forces, during installation and throughout their lifespan. These forces pose risks of premature failure and impermeability degradation. In this study, the characterization of the short and long-term mechanical response of PVC GMs to uniaxial tensile forces has been investigated. Uniaxial tensile test have been performed for tensile rates spanning several orders of magnitude. Analysis of the true stress-strain curves reveals a significant decrease in tensile modulus, strength, and strain at failure at low strain rates, which are relatively close to those applied in situ. Long-term investigations have been conducted as well, through relaxation tests. Our key results unveil two distinct characteristic times in stress relaxation, with the fast relaxation occurring over the first 4 h. During this phase, the pre-relaxation loading rate affects the relaxation behavior. Beyond this phase, the relaxation behavior becomes independent from the pre-relaxation loading rate. Burger's rheological model is proposed to measure the stress relaxation at different rates. The model's results validate the existence of two characteristic times.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 445-456"},"PeriodicalIF":4.7,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702363","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

Microscale analysis of geomembrane–geotextile interface cyclic shear behavior using DEM 利用 DEM 对土工膜-土工织物界面循环剪切行为进行微观分析

IF 4.7 1区工程技术

Geotextiles and Geomembranes Pub Date : 2024-11-25 DOI: 10.1016/j.geotexmem.2024.11.009

Jian Wu , Ya-Qiong Wang , Shi-Jin Feng

{"title":"Microscale analysis of geomembrane–geotextile interface cyclic shear behavior using DEM","authors":"Jian Wu , Ya-Qiong Wang , Shi-Jin Feng","doi":"10.1016/j.geotexmem.2024.11.009","DOIUrl":"10.1016/j.geotexmem.2024.11.009","url":null,"abstract":"<div><div>Given that the material-wearing process is the key factor influencing the dynamic shear strength at the interface between the geomembrane (GMB) and nonwoven geotextile (NWGT), this study investigates the cyclic shear behavior of the GMB–NWGT interface from a microscale perspective using the three-dimensional discrete element method (DEM). The textured GMB is simulated with breakable asperities and the thermally bonded NWGT is generated by spatially randomly distributed fibers which could be stretched and untangled. The established model is validated against the experimental data. The wearing process during cyclic loading is evaluated by quantifying the embedded depth of GMB asperities and fiber breakage within NWGT. The simulation results demonstrate that the maximum asperity embedment (inter-embedding effect), affected by the normal stress and displacement amplitude, induces the hook and loop interactions between asperities and fibers (inter-locking effect), accounting for the cyclic shear resistance at the interface. The inter-locking effect dominates the strain-hardening behavior of the GMB–NWGT interface when the percentage of inter-fiber bond breakage is less than 22% and the maximum asperity embedment ratio is lower than 60%; otherwise, the inter-embedding effect dominates the strain-softening behavior of the interface.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 457-473"},"PeriodicalIF":4.7,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702135","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