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The bottom-layer concrete canvas geocell played important roles in the seismic stability of the retaining wall which restricted the base sliding of retaining walls and changed the failure pattern of retaining walls.
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Since tests on shaking table are conducted under 1-g conditions, unlike centrifuge model tests, they suer from scaling eects. This causes large disparities in the stresses in the models and the actual stresses in the full-scale walls. However, due to the added benets of savings in material, testing costs and time of small-scale models, shaking ...
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Abstract – The seismic performance of retaining walls is usually evaluated through simplified displacement-based approaches which neglect the change in the soil-wall …
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Shaking table model tests provided clear insights into the effect of various geocell and wall parameters on the seismic response of geocell retaining walls. …
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In this paper, in order to investigate the seismic stability of the new-type of geocell reinforced retaining, a series of pullout test and shaking table model tests was carried out by using the ...
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To study the effect of reinforcement type and quantity on the response of model slopes in this study, a series of shaking table tests were carried out on model slopes reinforced with different ...
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The numerical model is first validated based on the shaking table test results and then several dynamic analyses are performed using the selected records of the Iranian ground motions database. ... The complexities of scaling have long presented challenges in applying small-scale test results of geocell-reinforced footings to field conditions ...
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As the measured data of earthquake response is limited, shaking table test is becoming an important way to simulate the seismic response of underground structures (Chen et al., 2010, Yan et al., 2015, Yu et al., 2018c, Zhang et al., 2019). A series of shaking table tests were conducted in this study to investigate the effects of the …
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Physical modelling of cantilever retaining walls with and without backfill reinforcement was conducted on a 1g shaking table to evaluate the mitigation effect of reinforcement on system dynamics (g denotes the acceleration of gravity). The model wall has a height of 1.5 m with a scale ratio of 1/4 and retains dry sand throughout. The input …
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RWs reinforced by square-shaped geocell models and geogrid models was evaluated by two shaking table model tests. In addition, a gravity-type retaining wall model was also tested for comparison. Figure 1. a) Square-shaped geocell model; b) Diamond-shaped geocell model SHAKING TABLE TEST Model configurations and testing materials …
ادامه مطلب
Seismic response of a newly developed geocell-reinforced soil retaining wall backfilled with gravel by shaking table model test Geotechnical hazards from large earthquakes and heavy rainfalls, Springer ( 2017 ), pp. 513 - 523
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This is highly consistent with the shaking table test results in ... especially at intense shaking. The concrete canvas geocell can effectively restrain and reduce the progradation of cracks in ...
ادامه مطلب
Performance of geocell retaining walls under seismic shaking conditions is studied in this paper. Shaking table tests on geocell retaining walls subjected to ground shaking conditions of different accelerations and frequencies are discussed. Retaining wall models of 600 mm height were constructed using a sand backfill with layers of geocells …
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Semantic Scholar extracted view of "Shaking table model tests on reinforced soil retaining wall with new-type geocell" by Tomoharu Mera et al.
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The test results indicate that the stability of geocell-reinforced retaining walls could be improved by reducing the spans between the welded spots of geocells, increasing geocell-membrane ...
ادامه مطلب
turning stabilities of the geocell layers have to be secured in maintaining the global stability of the whole wall system. In this study, the seismic performance of several soil retaining walls having a geocell facing is investigated using shake table tests. Five soil retaining walls, two with geocell facing alone and
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This study examined the working principles of the geocell reinforcement in low-volume roads through laboratory testing and finite-element modeling (FEM).
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Data from shaking table model tests on geocell retaining walls was analyzed in terms of lateral deformations, acceleration amplifications and crest settlements at various locations to draw conclusions on the overall wall performance. Results showed that retaining walls with geocell facing undergo overturning kind of failure during seismic ...
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The seismic behavior of reinforced soil retaining walls with polymeric strips is examined. A series of 1-g shaking table tests were employed on 80 cm …
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Large-scale shaking table tests were conducted on the stepped gabion reinforced retaining wall slope. • The natural frequency, damping ratio, and dynamic shear modulus were used to analyze the dynamic characteristics of the gabion reinforced retaining wall slope under seismic action.
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The seismic performance of honeycomb concrete canvas geocell-reinforced retaining walls with saturated calcareous sand backfill was investigated. Four different …
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In this paper, to check whether square-shaped geocell reinforced soil retaining wall has a substantially high seismic stability against a large seismic load, two shaking table …
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Abstract Based on the laboratory large scale model test of the stepped reinforced soil retaining wall (RSRW), the discrete element numerical model of stepped RSRW is set up by particle flow code. The … Expand. 8. PDF. Save. Physical and Numerical Shaking Table Studies on Geocell-Reinforced Retaining Walls. Prerana …
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Additionally, the variety of reinforced walls would increase by improving polymer science and introducing new reinforcement types. This paper studied the …
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To accurately simulate the dynamic response of a reinforced slope, appropriate similitude rules are required for the test. In this study, the similitude laws presented by Iai (1989) were used; these laws are widely adopted, being employed in many 1-g model tests. In accordance with the bearing capacity of the shaking table, the …
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the seismic resistance of square-shaped geocell RS-RWs, a series of 1-g shaking table model tests were conducted on square-shaped geocell RS-RWs with poorly compacted and well compacted Silica Sand backfills.
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This paper summarizes the seismic response of five large-scale retaining walls having a geocell facing. The walls were 2.8 m high and the backfill and foundation soil were a fine sand compacted to 90% standard Proctor density (relative density of 55%). The first two walls were of the same geometry, with a tapered facing made of geocells each …
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A new type of geocell, called square-shaped geocell having straight longitudinal members with transversal walls at separated locations has been developed to alleviate the potential problem of geogrid when used as tensile reinforcement in GRS RWs. In this paper, to check whether geocell-RS RW backfilled with poorly graded gravels has a substantially high …
ادامه مطلب
Download Citation | Seismic Response of a Newly Developed Geocell-Reinforced Soil Retaining Wall Backfilled with Gravel by Shaking Table Model Test | A new type of geocell, called square-shaped ...
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