Geotextiles and Geomembranes最新文献

{"title":"Full-scale testing and monitoring of geosynthetics-stabilized flexible pavement in Alberta, Canada","authors":"Mian Huang ,&nbsp;Jiming Liu ,&nbsp;Sanat K. Pokharel ,&nbsp;Taylor Dagenais ,&nbsp;Arghya Chatterjee ,&nbsp;Cheng Lin","doi":"10.1016/j.geotexmem.2024.11.003","DOIUrl":"10.1016/j.geotexmem.2024.11.003","url":null,"abstract":"<div><div>Freeze-thaw (F-T) cycles are a primary contributor of pavement damages in seasonal frost regions. Geosynthetics stabilization has been a promising solution for enhancing the roadways performance in cold regions. However, in comparison with the practical applications, research on the geosynthetics stabilization in cold-region roads is scarce and its efficacy is yet to be quantified. This study presents the full-scale test on geosynthetics-stabilized sections in a flexible pavement in Sturgeon County, Alberta. It focused on the investigation of three separate test sections with bases stabilized by two types of geocells and one geogrid composite, each fully instrumented with earth pressure cells, thermocouples, and moisture sensors. This experimental program consisted of plate loading tests and trafficking tests on each test section before and after the first F-T season, and monitoring of soil temperatures, moisture contents, and loads transferred to subbases while the sections were open to general traffic. The results showed seasonal F-T cycles resulted in increased pavement settlement, decreased load transfer ratio, and increased stress distribution angle under the plate loading. The traffic-induced stress on the subbases increased during the spring thaw but decreased afterwards.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 427-444"},"PeriodicalIF":4.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702362","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}

{"title":"Bearing capacity of strip footings in unsaturated soils reinforced with layered geogrid sheets using upper bound method","authors":"Sheng Xu,&nbsp;Zhen-Yu Yin","doi":"10.1016/j.geotexmem.2024.11.006","DOIUrl":"10.1016/j.geotexmem.2024.11.006","url":null,"abstract":"<div><div>A frequently overlooked aspect in previous research on bearing capacity of reinforced foundations is the prevalent unsaturated properties of soils. This paper provides an analytical framework for evaluating the bearing capacity of strip footings with single-layer and double-layer reinforcement in unsaturated soils. Four classical nonlinear expressions are used to determine the additional cohesion induced by matric suction. Solutions for the reinforcement layer undergoing tensile failure and sliding failure are provided separately. In the former case, where the bearing capacity depends on the reinforcement's tensile strength, the Prandtl mechanism is employed. In the latter case, where the bearing capacity is influenced by the characteristics of the reinforcement-soil interface, a multi-block mechanism is adopted. Additionally, sliding failure exhibits different mechanisms depending on the reinforcement's embedded depth. By comparing the results of different failure mechanisms, accurate upper bound solutions for bearing capacity are obtained. In the case of sliding failure, the optimal reinforcement depths that maximize the bearing capacity are identified for both single-layer and double-layer reinforcement. To facilitate engineering use, the optimum depths and corresponding bearing capacity factors are given in tabular form. The effectiveness of the framework is demonstrated through comparisons with previous theories, experiments, and finite element simulation results.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 405-426"},"PeriodicalIF":4.7,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702361","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}

{"title":"Prediction method for lateral displacements of geosynthetic-reinforced soil walls with segmental block facings","authors":"Fei Zhang ,&nbsp;Yuming Zhu ,&nbsp;Shangchuan Yang ,&nbsp;Yufeng Gao","doi":"10.1016/j.geotexmem.2024.11.008","DOIUrl":"10.1016/j.geotexmem.2024.11.008","url":null,"abstract":"<div><div>Predicting the performance of geosynthetic-reinforced soil walls with segmental block facings in service is a challenging task due to their complex interaction mechanisms. This paper proposes a semi-analytical method to estimate the performance of such walls by considering a prescribed reduction factor. Rough back of the wall and unreinforced zone effects can be taken into account. It also incorporates an empirical formula to consider reinforcement stiffness to accurately characterize the nonlinear interaction between geosynthetics and soil. Seven full-scale tests and three robust numerical simulations were employed to evaluate the proposed method. The results demonstrate satisfactory estimations of lateral displacement and reinforcement force location with a rational reduction factor. Additionally, the physical significance of the reduction factor is identified, and a method for its determination based on data analysis is proposed. This method eliminates the need for sophisticated numerical analyses to determine lateral displacements. Further investigation is required to explore the correlation between the reduction factor and various design parameters, aiming to establish a more generalized formula for predicting the performance of GRS segmental walls.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 378-393"},"PeriodicalIF":4.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702134","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}

{"title":"Mitigating frost heave of a soil stabilized with sisal fiber exposed to freeze-thaw cycles","authors":"Fei Deng ,&nbsp;Jianguo Lu ,&nbsp;Xusheng Wan ,&nbsp;Boshi Liu ,&nbsp;Binlong Zhang ,&nbsp;Hao Fu","doi":"10.1016/j.geotexmem.2024.10.005","DOIUrl":"10.1016/j.geotexmem.2024.10.005","url":null,"abstract":"<div><div>To embrace sustainable and environmentally friendly practices, sisal fibers have emerged as a green and low-carbon alternative, offering a viable approach for enhancing the physical characteristics of frost-vulnerable soils. In this study, the unconfined compressive strength and freeze-thaw cycle (FTC) tests for soils stabilized with sisal fiber were conducted, and the enhancement mechanism of sisal fibers on soils in cold regions was analyzed. The results showed that as the sisal fiber content raised, the unconfined compressive strength of the soil samples initially increased and then decreased, which reached a peak at 0.9% sisal fiber content. The heat flux in the sisal fiber-reinforced soil samples exhibited a more dramatic variation than that in the soils without adding fibers during the water-ice phase transition stage. The unfrozen water hysteresis in the fiber-reinforced soil samples initially decreased and then increased as the soil temperature decreased. With an increase in the FTCs, the frost heave for sisal fiber-reinforced soil samples occurred, whereas settlement appeared in the soils without adding fibers. The cumulative deformation of sisal fiber-reinforced soil samples was lower than that of the soils without adding fibers. Additionally, the thaw settlement rate was lower than that of frost heave rate for sisal fiber-reinforced soil samples, while the reverse results were occurred for the soils without adding fibers. The addition of sisal fibers established a more robust structural integrity to the soils.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 394-404"},"PeriodicalIF":4.7,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702133","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}

{"title":"Experimental study on vacuum preloading combined with intermittent airbag pressurization for treating dredged sludge","authors":"Yajun Wu ,&nbsp;Jinjin Wu ,&nbsp;Yitian Lu ,&nbsp;Xudong Zhang ,&nbsp;Chau Nguyen Xuan Quang","doi":"10.1016/j.geotexmem.2024.11.001","DOIUrl":"10.1016/j.geotexmem.2024.11.001","url":null,"abstract":"<div><div>The PVD-vacuum preloading method combined with airbags is a new soft ground treatment technology that can provide additional consolidation pressure and reduce lateral deformation towards the improvement area caused by traditional PVD-vacuum preloading. However, continuous airbag pressurization tends to create large cavities in the soil, and the optimal timing for airbag loading is also unclear. To address the aforementioned issues, this paper proposes an intermittent airbag pressurization method, adding small-diameter airbags between adjacent PVDs and intermittently inflating the airbags. Through indoor model test, the water discharge characteristics, improvement effect, improvement mechanism, and foundation settlement characteristics under intermittent airbag pressure were studied, proving that intermittent airbag pressure can significantly reduce early soil rebound. A calculation method for the airbag expansion diameter was proposed, and its feasibility was verified through experimental results. Finally, the optimal time period for intermittent airbag loading was clarified.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 366-377"},"PeriodicalIF":4.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652431","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}

{"title":"Corrigendum to “Seismic response and mitigation measures for T shape retaining wall in liquefiable site” [Geotext. Geomembranes. 53(1), (2025) 331–349]","authors":"Hongmei Gao ,&nbsp;Yongjie Zhou ,&nbsp;Zhihua Wang ,&nbsp;Xinlei Zhang ,&nbsp;Zhanpeng Ji ,&nbsp;Kai Huang","doi":"10.1016/j.geotexmem.2024.11.005","DOIUrl":"10.1016/j.geotexmem.2024.11.005","url":null,"abstract":"","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Page 365"},"PeriodicalIF":4.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652420","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}

{"title":"Stress-strain responses of EPS geofoam upon cyclic simple shearing: Experimental investigations and constitutive modeling","authors":"Weilie Zou ,&nbsp;Yuhang Li ,&nbsp;Zhong Han ,&nbsp;Qi Xiang ,&nbsp;Xiequn Wang","doi":"10.1016/j.geotexmem.2024.10.004","DOIUrl":"10.1016/j.geotexmem.2024.10.004","url":null,"abstract":"<div><div>This paper investigates the cyclic simple shearing behaviors of Expanded Polystyrene (EPS) geofoams considering influences of the shear strain amplitude (<em>γ</em>_a), number of shear cycles, shear rate, vertical stress (<em>σ</em>_n), and EPS density (<em>ρ</em>_EPS). The experimental results demonstrate that the cyclic shear stress (<em>τ</em>)-shear strain (<em>γ</em>) relationships of EPS are not sensitive to the shear rate. As the <em>γ</em> exceeds 2%, the EPS yields and its <em>τ</em>-<em>γ</em> relationships and backbone curve become nonlinear. There are linear relationships between the elastic modulus <em>E</em>, elastic shear modulus <em>G</em>_e, and plastic shear modulus <em>G</em>_p. They increase linearly with an increase in the <em>ρ</em>_EPS. The <em>G</em>_e and <em>G</em>_p are not sensitive to the <em>γ</em>_a. The cyclic shear stiffness <em>G</em> increases while the equivalent damping ratio <em>D</em> of EPS decreases with an increase in the <em>σ</em>_n and <em>ρ</em>_EPS. The <em>G</em> decreases while the <em>D</em> increases nonlinearly as the <em>γ</em>_a increases. Empirical models were developed to describe the variations of the <em>G</em>_e, <em>G</em>_p, <em>G</em>, and <em>D</em> with <em>σ</em>_n, <em>ρ</em>_EPS, and <em>γ</em>_a. A modified Hardin-Drnevich model was proposed to describe the backbone curves and <em>τ</em>-<em>γ</em> loops upon cyclic simple shearing, which has achieved good agreement with the experimental measurements and the testing results from the literature.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 350-364"},"PeriodicalIF":4.7,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561518","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}

{"title":"Seismic response and mitigation measures for T shape retaining wall in liquefiable site","authors":"Gao Hongmei ,&nbsp;Zhou Yongjie ,&nbsp;Wang Zhihua ,&nbsp;Zhang Xinlei ,&nbsp;Ji Zhanpeng ,&nbsp;Huang Kai","doi":"10.1016/j.geotexmem.2024.10.003","DOIUrl":"10.1016/j.geotexmem.2024.10.003","url":null,"abstract":"<div><div>Focusing on a T-shape cantilever retaining wall in a liquefiable site, a series of shaking table model tests were conducted to investigate the seismic stability characteristics of the wall when using EPS composite soil isolation piles (WEP), EPS composite soil isolation walls (WEW), and backfilled natural fine sand from Nanjing (WSS). The seismic response characteristics of the model ground soil and the retaining wall for the three models were comparatively analyzed regarding the acceleration, displacement, dynamic earth pressure and excess pore water pressure ratio. Moreover, the seismic performance of anti-liquefaction measures in the liquefiable ground with EPS composite isolation structures were discussed from the view of the phase characteristics and energy consumption. The results indicate that under the same peak ground acceleration, the excess pore water pressure in the WEP and WEW models is significantly lower than that in the WSS model. Different from WSS, WEP and WEW exhibit a segmented distribution with the buried depth in acceleration amplification factors. The embedding of isolation structures in liquefiable sites can reduce the wall sliding and rotational displacements by approximately 25%–50%. In addition, the out-of-phase characteristics of dynamic earth pressure increment are evidently different among WEP, WEW and WSS. There is an approximate 180° phase difference between the dynamic earth pressure behind the wall and the inertial force in the WEP and WEW models. EPS composite soil isolation structures show good energy dissipation characteristics, and especially the isolation wall is better than isolation pile. The displacement index of WSS retaining wall is significantly larger than that of WEW and WEP, indicating that EPS composite isolation piles and wall play an important role in the mitigating damage to the retaining wall. This study can provide references for the application of isolation structures in the liquefiable ground soil regarding the seismic stability.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 331-349"},"PeriodicalIF":4.7,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552872","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}

{"title":"A large-size model test study on the consolidation effect of construction waste slurry under self-weight and bottom vacuum preloading","authors":"Wenhao Jiang ,&nbsp;Liangtong Zhan ,&nbsp;Junyao Lu","doi":"10.1016/j.geotexmem.2024.10.002","DOIUrl":"10.1016/j.geotexmem.2024.10.002","url":null,"abstract":"<div><div>Bottom vacuum preloading (BVP) is the method of applying vacuum pressure at the bottom zone of soils to generate pore-water pressure difference between the top and bottom boundaries, thereby achieving the consolidation drainage. This study conducted a large-size model test to explore the engineering feasibility of combining self-weight and BVP to treat construction waste slurry (CWS). Through the treatment of the measures of self-weight consolidation (0–26 d) and BVP with a water cover (26–78 d), the average water content of CWS declined from 255.6% to 115.9%, and the volume reduction ratio reached 0.476. However, since these two measures could properly treat only the bottom CWS, the measures of BVP with the mud cover (78–141 d) and the natural air-drying (141–434 d) were performed to further decrease the CWS water content near the upper zone. The latter two-stage measures reduced the average water content of CWS to 84.9% and increased the volume reduction ratio to 0.581. Moreover, the measurements suggested that the treated CWS largely exhibited a shear strength of 10 kPa or more. Overall, the proposed approach appeared some engineering feasibility to treat CWS, and the performed test study could act as a reference for the practical treatment of CWS.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 318-330"},"PeriodicalIF":4.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534110","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}

{"title":"Observations from opening of a novel geotextile tube connection in field test site","authors":"Hyeong-Joo Kim ,&nbsp;Myoung-Soo Won ,&nbsp;Shamsher Sadiq ,&nbsp;Tae-Woong Park ,&nbsp;Hyeong-Soo Kim ,&nbsp;Young-Tak Ryu ,&nbsp;Young-Chul Park ,&nbsp;Ji-Hwi Gwak ,&nbsp;Tae-Eon Kim ,&nbsp;Jeong-Ho Choi","doi":"10.1016/j.geotexmem.2024.10.001","DOIUrl":"10.1016/j.geotexmem.2024.10.001","url":null,"abstract":"<div><div>A novel connection configuration for geotextile tubes was proposed, involving the insertion of an auxiliary tube between two main tubes, to ensure proper alignment and leveling when connecting them in a series, thus consolidating individual tubes into a unified structure while maintaining a consistent horizontal level. The novel connection was implemented at a test bed site in the Saemangeum reclaimed area, South Korea, to test exposure to the marine environment including sea waves, sun light exposure and reclamation process. This study presents the observations made upon opening the connection tube after 8 years. The observation shows that the connected geotextile tubes using the proposed auxiliary tube are suitable for use in long-term reclamation projects.</div></div>","PeriodicalId":55096,"journal":{"name":"Geotextiles and Geomembranes","volume":"53 1","pages":"Pages 311-317"},"PeriodicalIF":4.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428023","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}