Shake Table Tests to Measure the Dynamic Performance of Geotextile-reinforced Embankment

Edinçliler, Ayşe; Toksoy, Yasin Sait

doi:10.3311/ppci.10540

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…Srilatha et al [10] and Edinçliler and Toksoy [11] were performed to reduce scale shaking table test on model embankment to compare the behavior of reinforced and unreinforced embankment under both earthquake with uniform cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

Effect of Acceleration on Wrap Faced Reinforced Soil Retaining Wall on Soft Clay by Performing Shaking Table Test

Hore

Chakraborty

Shuvon

et al. 2020

Proc. eng. technol. innov.

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This research incorporates shaking table testing of scale wrap faced soil wall models to evaluate the seismic response of embankment. Currently the seismic designs of highway or railway embankment rely on little or no empirical data for calibrating numerical simulations. This research is working towards filling that empirical data gap. The specific purpose of the study was to evaluate the seismic response of constructed embankment model regarding the different input base accelerations with fixed frequency. A series of one-dimensional (1D) shaking table tests (0.05g, 0.1g, 0.15g and 0.2g), were performed on a 0.4 meters high wrap faced reinforced-soil wall model. Additionally, it was placed over 0.3 meters high soft clayey foundation. Predominantly, the influence of the base acceleration on the seismic response was studied in this paper. The physical models were subjected to harmonic sinusoidal input motions at a fixed frequency of 1 Hz, in order to assess the seismic behavior. The effects of parameters such as acceleration amplitudes and surcharge pressures on the seismic response of the model walls were considered. The relative density of the backfill material was kept fixed at 60%. The results of this study reveal that input accelerations and surcharge load had significant influence on the model wall, pore water pressure, and changes along the elevation. Acceleration response advances with the increase in base acceleration, so the difference being more perceptible at higher elevations. The pore water pressures were found to be high for high base shaking and low surcharge pressures at higher elevations. The results obtained from this study are helpful in understanding the relative performance of reinforced soil retaining wall under different test conditions resting on soft clay.

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Section: Introductionmentioning

confidence: 99%

Effect of Acceleration on Wrap Faced Reinforced Soil Retaining Wall on Soft Clay by Performing Shaking Table Test

Hore

Chakraborty

Shuvon

et al. 2020

Proc. eng. technol. innov.

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“…By reviewing relevant literature, it is known that previous researches on the seismic solution of tunnels focus on the effect of horizontal seismic force [18][19][20]. The same is true with existing specifications [21,22].…”

Section: Introductionmentioning

confidence: 89%

Theoretical Study on Relaxed Surrounding Rock Pressure on Shallow Bias Neighborhood Tunnels under Seismic Load

Liu

Xiong

Liu

et al. 2021

Period. Polytech. Civil Eng.

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To study the distribution of relaxed surrounding rock pressure on the shallow bias neighborhood tunnels under the combined action of horizontal and vertical earthquake force, finite element software was used for failure mode analysis. Moreover, with the pseudo-static method, the calculation formula for the relaxed pressure on the shallow bias neighborhood tunnels was derived and used to analyze the variation of the rupture angle of these tunnels under the action of the seismic force. The study shows that: shallow bias neighborhood tunnels basically follow a “W” failure pattern under the combined action of horizontal and vertical seismic force, and the failure scope of the surrounding rock is controlled by four rupture angles. Rupture angles β2 and β3 between the deep and shallow tunnels of the shallow bias neighborhood tunnels are not affected by the surface slope. For tunnels with the same grade of the surrounding rock, the greater the seismic intensity, the smaller the value of β2, and the greater the value of β3. While at the same seismic intensity, the higher the grade of the surrounding rock, the smaller the β2 and β3. Ruptures angles β1 and β4 are influenced by the surface slope, seismic intensity and surrounding rock grades. A steeper surface slope leads to a smaller β1 and a greater β4; β1 increase and β4 decrease with increasing seismic intensity; while, β1 and β4 both show a decreasing trend with an increasing rock grade.

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“…The use of geosynthetics under foundations or beneath embankments can absorb seismic energy and mitigate dynamic excitations that transmit to upper layers of soils and foundation of overlying structures. This phenomenon occurs due to the tensile strength of the geosynthetic material and the soil-structure interaction between soil and geosynthetic material which increases the shear resistance of soil under dynamic conditions [17].…”

Section: Introductionmentioning

confidence: 99%

Effects of geogrid reinforcement on the seismic performance of lightweight embankments

Edinçliler

Toksoy

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Highway embankments have experienced earthquake induced damages from minor to catastrophic scales during the past few decades despite the fact that highways are considered as major lifelines that should be in continuous operation under any circumstances. Recent advances in highway engineering suggest that geosynthetic reinforcement can be considered as a novel approach to mitigate the earthquake hazards on highway embankments successfully. The use EPS geofoam inclusions is one of the prominent improvement methods available to increase the seismic performance of lightweight embankments. It’s a well-known method to reduce the magnitude of earthquake-induced dynamic forces. The aim of this numerical study is to determine the effects of using geogrid reinforcement on the seismic performance of lightweight embankments. Non-linear dynamic analyses were performed using the PLAXIS software using real earthquake records. Evaluation of the results reveal that inclusion of geogrid reinforcement layer beneath the lightweight embankment model successfully decreases earthquake-induced dynamic forces and increases the seismic performance of the embankment model in comparison of the nominally identical structure with no geogrid reinforcement. Numerical results obtained from this novel technique suggest that the implementation of a geogrid layer beneath such lightweight embankments can successfully and effectively increase the seismic performance of such structures.

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Shake Table Tests to Measure the Dynamic Performance of Geotextile-reinforced Embankment

Abstract: Using geosynthetics in highway embankments

Cited by 5 publications

References 15 publications

Effect of Acceleration on Wrap Faced Reinforced Soil Retaining Wall on Soft Clay by Performing Shaking Table Test

Effect of Acceleration on Wrap Faced Reinforced Soil Retaining Wall on Soft Clay by Performing Shaking Table Test

Theoretical Study on Relaxed Surrounding Rock Pressure on Shallow Bias Neighborhood Tunnels under Seismic Load

Effects of geogrid reinforcement on the seismic performance of lightweight embankments

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