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28 results for “Embankment”
GEOLAB-PEBSTER-Deltares: Small-scale experiments on Piled Embankments with Basal Steel Mesh Reinforcement - Measurements.
<p><strong>DOI: 10.5281/zenodo.12627309</strong></p> <h1><strong>Small-scale experiments on basal steel-mesh reinforced piled embankments (PEBSTER, a transnational access project of GEOLAB)</strong></h1> <p>Welcome to the GEOLAB-PEBSTER-Deltares project on Zenodo! This repository contains the measurement data from four small-scale experiments on Piled Embankments with Basal Steel Reinforcement (PEBSTER). Pile-supported (PS) embankments with basal geosynthetic reinforcement (GR) are commonly built in soft soil areas (van Eekelen and Han, 2020). Steel mesh reinforcement (SR) is particularly appealing for high embankments (Topolnicki et al., 2019). Its high axial stiffness, compared to geosynthetics, reduces horizontal deformation at the embankment base, minimizes bending moments in the piles, and ultimately enhances embankment stability.</p> <h2>PEBSTER</h2> <p>This dataset includes measurements from four small-scale tests on steel-reinforced piled embankments, conducted in the Deltares laboratory (van Eekelen et al., 2024a,b). These tests are part of a broader research initiative called Piled Embankments with Basal Steel Reinforcement (PEBSTER), which also includes a large-scale test (Schneider et al., 2024a,b). The small-scale tests were conducted at Deltares, Delft, Netherlands, while the large-scale test was conducted in Darmstadt, Germany, at the Institute of Geotechnics, Technical University of Darmstadt.</p> <h2>GEOLAB</h2> <p>GEOLAB is a project of the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 101006512, addressing Europe's Critical Infrastructure (CI) challenges in the water, energy, urban, and transport sectors.</p> <p>The GEOLAB Research Infrastructure (RI) consists of 11 unique installations across Europe to study subsurface behavior and its interaction with structural CI elements and the environment. During the GEOLAB Transnational Access (TA), users outside the consortium gained access to the GEOLAB installations to perform research and innovation.</p> <h2>Dataset of four small-scale experiments</h2> <p>Here, we share the measurement data from the small-scale experiments that were part of one of the GEOLAB TA projects: PEBSTER. Four piles (diameter 0.1 m, centre to centre 0.55m) passed through a steel plate, that supported a foam cushion, that was sealed and soaked. A tap allowed for drainage of the foam cushion, simulating the consolidation of the subsoil between the piles. The 0.55 m high embankment consisted of medium coarse sand, and was reinforced at its base with a steel mesh reinforcement. A surcharge load up to 100 kPa was applied with a water cushion.<br><br><span>The load distribution is measured by pressure cells and load transducers. </span>Soil strains and displacements were monitored at five elevations within the fill, utilizing distributed fibre optic sensing (DFOS) technology from the Nerve-Sensors family, as depicted in Figure 2. Additionally, the steel mesh reinforcement was extensively instrumented with optic fibres.</p> <h2>PEBSTER Research group</h2> <p>The project was conducted by a research group that includes Deltares, Netherlands, the Institute of Geotechnics of the Technical University of Darmstadt, Germany, Keller (Germany, France, Poland), SHM System, Poland, and FOLAB, Germany.</p> <p> </p>
Dataset of cartographic embankment lines to generalise
<p>A dataset of roads and cartographic embankment lines that are too close to each other for a cartographic representation at the 1:25k scale. This dataset is derived from IGN topographic data, and was used to test the ReBanker generalisation algorithm. A set of displaced lines obtained with the ReBanker algorithm is also provided for future comparisons.</p>
Drinking Fountain Victoria Embankment Gardens
A drinking fountain in Victoria Embankment Gardens, London. Date: 1886 http://www.mdfcta.co.uk/details-f/f092.html Photos taken in January 2019 with a Sony a6000 and processed in Agisoft Metashape. Source: Objaverse 1.0 / Sketchfab
Embankment Výtoň, Prague
Embankment Výtoň, Prague, Czech Republic Photogrammetry done with Canon 200D and Yongnuo 50mm f/1.8 II Source: Objaverse 1.0 / Sketchfab
Drinking Fountain Chelsea Embankment Gardens
A drinking fountain in Chelsea Embankment Gardens, London. Date: 1887 http://www.mdfcta.co.uk/details-f/f033.html 286 photos taken in November 2020 with a Sony a6000 and processed in Reality Capture. Source: Objaverse 1.0 / Sketchfab
Coupling Novel Soil Moisture-Suction Sensors and UAV Photogrammetry Technology to the Performance of Highway Embankments
<p>The movement of water plays a critical role in the mechanical performance and service life of transportation infrastructure, especially for pavement subgrades and highway embankments consisting of high-plasticity, expansive soils that saturate and ultimately lead to infrastructure distress. Shallow slides along highway embankments are ubiquitous across Region 6 because long-term wetting and drying cycles considerably weaken these compacted soils. In the aftermath of heavy rains, pore-water pressures increase to a critical threshold such that a failure occurs. The implications of embankment failures range from repeated maintenance repairs to long-term road closures. A comprehensive approach to model highway embankments comprising of laboratory testing, setup, and field data collection using unmanned aerial vehicles has been proposed in this study.</p>
Rapid Repair of Cracks on the Embankment Slopes Using Bio-Cement
<p>This research explored the feasibility of using Microbially Induced Carbonate Precipitation (MICP) to improve fine-grained soil mechanical properties, seal the soil cracks, and assess the improvement of MICP on slope stability. The conducted research tasks include (1) direct shear tests to investigate the mechanical behavior and biogeochemical reactions of low-plasticity silt treated by MICP, (2) cyclic wetting-drying tests to assess the feasibility of using MICP to seal and waterproof the soil cracks, and (3) SLOPE/W modeling of a slope treated by MICP. Direct shear tests were used to evaluate the shear responses of the low-plasticity silt under different overburden pressures (12, 25, and 35 kPa) and different bio-cement treatments. A series of cyclic wetting-drying tests were used to assess the effectiveness of MICP treatment on healing soil cracks. Crack lengths, area, width, and area percentage were measured and compared before and after the MICP treatment. SLOPE/W analysis was performed to assess the factor of safety of a slope under MICP treatment. The direct shear tests results show that the peak shear strengths increased by an average of 30% from the untreated to the MICP-treated soil samples. The wetting-drying cycle tests results show that MICP treatment can heal desiccation cracks, reducing crack length, crack width, and crack area. The results of the SLOPE/W modeling show that the MICP treatment had a positive effect on the improvement of slope stability, but more field tests are needed for optimizing the treatment solutions and procedures and assessing the long-term effect and ecological impacts.</p>
Victoria Embankment Camel Bench
A cast iron and wood bench on the Victoria Embankment (facing the river), London. One of several, this one my be a reproduction (further research underway). Date (of originals): 1877 The benches include camels at the arm rests because they were designed to compliment Cleopatra's Needle when installed further along the Embankment. 439 photos taken in November 2020 with a Sony a6000 and processed in Reality Capture. Source: Objaverse 1.0 / Sketchfab
Prediction and Rehabilitation of Highway Embankment Slope Failures in Changing Climate
<p>Corresponding data set for Tran-SET Project No. 17GTLSU04. Abstract of the final report is stated below for reference:</p> <p>"Highway slopes constructed with clayey soil are prone to desiccation cracks due to wetting and drying weather cycle, which allows greater moisture infiltration into the embankment from precipitation. Fissures formed due to extended wetting and drying cycles allow water to seep deeper into the soil than surficial wetting and increase the water content. This increases the moisture content in the soil and results in reduction in shear strength to the fully softened strength. On the other hand, development of desiccation cracks and reduction of the soil matric suction ultimately result in higher hydraulic conductivity value which causes development of higher pore water pressure. As the moisture content of the clayey soil increases, the strength reduces to a fully softened shear strength that causes frequent shallow and medium slope failures that are oriented approximately parallel to the surface of the embankment. Hence, the fully softened strength of Louisiana and Texas soils need to be quantified to develop a predictive tool for identifying high-risk zones of highway embankments. Given the documented failures in Texas and Louisiana, this research project is focused on investigating past failures to develop lessons learned and guidelines that can be implemented in the predictive framework."</p>
Using Rice Husk Ash (RHA) as Stabilizing Agent for Problematic Subgrade Soils and Embankments
<p>Arkansas produces the most of the rice in the United States. About 20% of poddy is rice husk (RH), which is burnt under controlled conditions to produce rice rusk ash (RHA). The RHA is considered an environmental hazard and a significant challenge for rice millers. However, RHA is rich in pozzolanic material, which is mainly silica. In this study, RHA is used to stabilize poor soils. Another commonly used stabilizer, hydrated lime (HL), has also been evaluated for comparison purposes. Thus, this study aimed to determine the optimum percentages of RHA, HL, or a combination of these two agents by evaluating selective physical, mechanical, and chemical properties of four subgrade soils (two from Arkansas and two from Oklahoma). Various amounts (by mass of soil) of RHA (3, 6, and 9%), HL (1, 3, and 5%), and RHA+HL have been utilized to know their optimum dosages. Routine tests including the Atterberg limits, Modified proctor, pH, California Bearing Ratio (CBR), unconfined compressive strength (UCS), free swell, and one-direction shrinkage were conducted for untreated and treated soils. Further, scanning electron microscopy (SEM) with X-ray diffractometer tests were performed to evaluate the changes in microstructure due to stabilization. Treated soils show a significant improvement in UCS and CBR data. Additionally, the free swell test also indicates a reduced swelling of treated soils. The optimum dosages of RHA and HL were found to be 6% and 3%, respectively. When these two agents were used together, a blend of 4%RHA and 1%HL was found to be the most effective in improving engineering properties The findings of this research can significantly benefit the construction industry in Arkansas by reducing costs associated with traditional soil stabilization methods and finding a sustainable and environmentally way of using RHA.</p>
Chelsea Embankment Cabmen's Shelter
Photogrammetry capture of a disused cab/taxi shelter on Chelsea Embankment near the junction with Albert Bridge, London. There have been several cab shelters here, this one dating from the 1990s(?). The previous one was destroyed when accidentally hit by a lorry. It is sometimes known by the nickname 'The Kremlin'. The shelter felt out of use due to the lack of parking for taxi drivers nearby. The shelter is in the process of being restored by the Cabmen's Shelter Fund who are looking for funds for urgent repairs and to ensure its survival. The chimney/vent on the roof is currently missing and it has no mains sewage connection. Waste water previously was emptied into an external water butt. https://en.wikipedia.org/wiki/Cabmen%27s_Shelter_Fund Access kindly supplied by Mark Brown of the Cabmen's Shelter Fund. 1090 photos taken in March 2021 with a Sony a6000 and processed in Reality Capture. Source: Objaverse 1.0 / Sketchfab
FIGURE. Multiclavula caput-serpentis (KaiR699, holotype). a. Embankment covered by the thallus, with several groups of numerous basidiocarps (arrows). b. Thallus on soil, with a group of basidiocarps. c. Basidiocarps with different shapes, +/- lateral view. d. Basidiocarps from below-lateral. Bars a = 20 cm, b = 1 cm, c, d = 2 mm. Photos by K. Reschke. in New and interesting species of Agaricomycetes from Panama
FIGURE. Multiclavula caput-serpentis (KaiR699, holotype). a. Embankment covered by the thallus, with several groups of numerous basidiocarps (arrows). b. Thallus on soil, with a group of basidiocarps. c. Basidiocarps with different shapes, +/- lateral view. d. Basidiocarps from below-lateral. Bars a = 20 cm, b = 1 cm, c, d = 2 mm. Photos by K. Reschke.
GEOLAB-PEBSTER-TU Darmstadt: Large-scale model test on Piled Embankments with Basal Steel Mesh Reinforcement - Measurements.
<h1><strong>Large-scale model test on basal steel-mesh reinforced piled embankments (PEBSTER, a transnational access project of GEOLAB)</strong></h1> <p>Welcome to the GEOLAB PEBSTER TU Darmstadt project on Zenodo! This repository contains the measurement data of the large-scale model test on Piled Embankments with a Basal Steel Reinforcement (PEBSTER). Pile-supported embankments with basal geosynthetic reinforcement are commonly built in soft soil areas. Steel mesh reinforcement is particularly appealing for high embankments (Topolnicki et al., 2019). Its high axial stiffness, compared to geosynthetics, reduces horizontal deformation at the embankment base, minimizes bending moments in the piles, and ultimately enhances embankment stability.</p> <h2>PEBSTER</h2> <p>This dataset includes measurements from a large-scale test on steel-reinforced piled embankments, conducted at the Institute of Geotechnics of the Technical University of Darmstadt (Schneider et al., 2024a,b,c). This test is part of a broader research initiative called Piled Embankments with Basal Steel Reinforcement (PEBSTER), which also includes four small-scale test (van Eekelen et al., 2024), conducted at Deltares, Delft, Netherlands.</p> <h2>GEOLAB</h2> <p>GEOLAB is a project of the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 101006512, addressing Europe's Critical Infrastructure (CI) challenges in the water, energy, urban, and transport sectors.</p> <p>The GEOLAB Research Infrastructure (RI) consists of 11 unique installations across Europe to study subsurface behavior and its interaction with structural CI elements and the environment. During the GEOLAB Transnational Access (TA), users outside the consortium gained access to the GEOLAB installations to perform research and innovation.</p> <h2>PEBSTER Research group</h2> <p>The project was conducted by a research group that includes the Institute of Geotechnics of the Technical University of Darmstadt, Germany, Deltares, Netherlands, Keller (Germany, France, Poland), and SHM System, Poland.</p>
Phenology and flower species availability define wild bee communities on river embankments
Open the record for dataset details and reuse information.
Data for UAV detection of river embankment piping
<p>Data for a manuscript submitted to Water Resources Research.</p>
Fig 7 from: Fargeaud K, Gardiner T (2018) The response of Orthoptera to grazing on flood defense embankments in Europe. Journal of Orthoptera Research 27(1): 53-60. https://doi.org/10.3897/jor.27.25183
Fig 7 Uncut grassland and scrub on a sea wall folding (Brightlingsea, Essex, UK); credit T. Gardiner.
Fig 4 from: Fargeaud K, Gardiner T (2018) The response of Orthoptera to grazing on flood defense embankments in Europe. Journal of Orthoptera Research 27(1): 53-60. https://doi.org/10.3897/jor.27.25183
Fig 4 Sheep grazing on a sea wall folding creating a heterogeneous, patchy sward favorable for Orthoptera (Brightlingsea, Essex, UK); credit T. Gardiner.
Fig 3 from: Fargeaud K, Gardiner T (2018) The response of Orthoptera to grazing on flood defense embankments in Europe. Journal of Orthoptera Research 27(1): 53-60. https://doi.org/10.3897/jor.27.25183
Fig 3 Light sheep grazing on a sea wall creating a heterogeneous, patchy sward favorable for Orthoptera (Little Oakley, Essex, UK); credit T. Gardiner.
Integrated Full-Scale Physical Experiments and Numerical Modeling of the Performance and Rehabilitation of Highway Embankments
<p>Corresponding data set for Tran-SET Project No. 18GTLSU06. Abstract of the final report is stated below for reference:</p> <p>"The study aimed to fundamentally understand how soil strength and hydraulic properties are impacted by recurring cycles of wetting and drying induced by climate variability, with the practical implication of forecasting the stability of highway embankment slopes. The review of literature on the effects of long-term cyclic wetting-drying phases on hydro-mechanical properties of clayey soils suggests that only a few cycles of wetting and drying can impact the strength and hydraulic conductivity, where the latter can increase several orders of magnitude. Laboratory model-scale experiments of Louisiana and Texas soils are still ongoing and will relate the laboratory test results to weathering cycles by accounting for parameters such as rainfall intensity and duration, evapotranspiration, temperature, and relative humidity. The objective of the laboratory testing was to determine the strength and unsaturated soil properties of samples collected from laboratory model-scale experiments and to investigate the subsequent changes in the hydro-mechanical properties of those clayey soils. For example, shrinkage test results provided a measure of the propensity and extent of strength loss incurred by a soil specimen when exposed to weathering cycles. Numerical modeling of highway embankments with material properties and test results obtained from lab testing were used to predict the factor of safety for an embankment in Texas."</p>
Warden's Hut Victoria Embankment Gardens
A small shed/hut in Victoria Embankment Garden's, London. It leans back toward the slope. Photos taken January 2019 with a Sony a6000 and processed in Agisoft Metashape. Source: Objaverse 1.0 / Sketchfab
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