Effect of geotextiles with different masses per unit area on water loss and cracking under bottom water loss soil conditions

Yang, Binbin; Chen, Yang; Zhao, Can; Li, Zilong

doi:10.1016/j.geotexmem.2023.10.006

Cited by 4 publications

(3 citation statements)

References 44 publications

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“…A layer of geogrid is required to be embedded for each level of the slope. The lengths of the geogrids for each level are not the same and decrease gradually with an increase in slope levels [31].…”

Section: Selection Of Test Pointsmentioning

confidence: 90%

A Study on the Factors Influencing High Backfill Slope Reinforced with Anti-Slide Piles under Static Load Based on Numerical Simulation

Zhou,

Zhong,

Yang

et al. 2024

Buildings

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Based on a real engineering case, this study employs the MIDAS finite element software to model the reinforced high embankment slope using anti-sliding piles. The accuracy of the finite element method is verified by comparing calculated outcomes with field monitoring data. Expanding on this foundation, an analysis of factors influencing the reinforced high embankment slope is undertaken to scrutinize the impact of diverse elements on the slope and ascertain the optimal reinforcement strategy. The results reveal the following: The principal displacement observed in the high embankment slope is a vertical settlement, which escalates with the backfill height. Notably, the highest settlement does not manifest at the summit of the initial slope; instead, it emerges close to the summits of the subsequent two slopes. However, the maximum horizontal displacement at the slope’s zenith diminishes as the fill height increases—a trend that aligns with both field observations and finite element computations. The examination of the influence of anti-sliding pile reinforcement on the high embankment slope unveils that factors like the length, diameter, spacing, and positioning of the anti-sliding piles exert minor impacts on vertical settlement, while variations in the parameters of the anti-sliding piles significantly affect the slope’s horizontal displacement. When using anti-sliding piles to reinforce multi-level high embankment slopes, factoring in the extent of horizontal displacement variation and potential cost savings, the optimal parameters for the anti-sliding piles are a length of 15 m, a diameter of 1.5 m, and a spacing of 2.5 m, presenting the most effective combination to ensure superior slope stability and support.

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Section: Selection Of Test Pointsmentioning

confidence: 90%

A Study on the Factors Influencing High Backfill Slope Reinforced with Anti-Slide Piles under Static Load Based on Numerical Simulation

Zhou,

Zhong,

Yang

et al. 2024

Buildings

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show abstract

“…Geotechnical engineering, especially underground structural engineering, has complex geological conditions and many uncertainties in engineering, so it is still difficult to accurately solve the structural forces in mathematical calculation and mechanical analysis. Indoor model tests can remove mathematical and mechanical difficulties using real physical entities, and reflect the physical and dynamic response of the surrounding rock support structure in the process of tunnel excavation in a detailed, real, and direct way [29][30][31].…”

Section: Model Experimental Setupmentioning

confidence: 99%

Deformation Law of Tunnels Using Double-Sidewall Guide Pit Method under Different Excavation Sequences

Ruan,

Luo,

et al. 2023

Applied Sciences

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The double-sidewall guide pit method finds extensive application in the construction of large cross-section tunnels in soft rock strata due to its minimal disruption to the surrounding rock, thereby enhancing tunnel stability. To investigate the loading and deformation patterns of the surrounding rock and tunnel support using the double-sidewall guide pit method, this study compares the impacts of various construction sequences on surface settlement, surrounding rock stress, and lining stress using indoor model tests. The experimental results show that after excavating the upper guide hole on one side, the excavation of the lower guide hole on the same side is carried out. The upper and lower support structures form a closed loop, and the structure can better constrain the surrounding rock and control the deformation of the surrounding rock, whereas the lower structure can share the stresses suffered by the upper structure. Therefore, compared with the upper and lower excavation methods, the surface settlement caused by the left and right excavation methods is smaller, the disturbance to the surrounding rock is smaller, and the supporting structure is more evenly and stably stressed in the excavation process.

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“…According to Qu and Sun (2016) and Ruan et al (2020), cohesive soils reinforced with fiber exhibit less expansibility as the fiber concentration increases. Yang et al (2023) proved that when the mass per unit area of the geotextile increased, the interface friction between the soil and geotextile increased, and the cracking of the soil was effectively inhibited. Liu and Cai (2009) used the finite element method to compare the dynamic response of pavements without or with geogrid reinforcement and concluded that geogrid reinforcement can provide lateral restraint to the subgrade by increasing the interfacial shear resistance performance and can improve the stress distribution in the subgrade layer; thus, geogrid reinforcement also reduces surface deformation and uneven settlement.…”

mentioning

confidence: 99%

Study on the shear and deformation characteristics of geogrid-reinforced gravelly soils based on large-scale triaxial tests

Liu,

Pan,

Wang

et al. 2024

Front. Earth Sci.

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Geogrid reinforcement has a limiting effect on the lateral deformation and thus improves the shear strength of the soil, the overall strength of the soil and the overall stability of the corresponding geotechnical structure. In this study, large-scale triaxial tests without and with geogrid reinforcement were conducted on three typical gravelly soils in Xinjiang using a large-scale triaxial apparatus. The shear strength and deformation characteristics of gravelly soils with different particle shapes and the stress-strain relations, strength characteristics, damage patterns, and reinforcement effects of gravelly soils with and without reinforcement were investigated. Geogrid reinforcement effectively enhances the strength of the soil; the internal friction angle remained relatively constant with and without reinforcement, whereas the cohesive force increased significantly. The reinforcement effects interpreted from the results obtained from the triaxial tests were discovered when a certain deformation or relative displacement with the reinforcement materials of the soil occurred. Under uniform test conditions, the volumetric strain of the samples of gravelly soil with reinforcement significantly decreased with increasing confining pressure, and the difference in volumetric strains with and without reinforcement was greater when the confining pressure was higher. The highlight of this study is its significance in explaining the reinforcement mechanism in gravelly soils and in selecting engineering design parameters.

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Effect of geotextiles with different masses per unit area on water loss and cracking under bottom water loss soil conditions

Cited by 4 publications

References 44 publications

A Study on the Factors Influencing High Backfill Slope Reinforced with Anti-Slide Piles under Static Load Based on Numerical Simulation

A Study on the Factors Influencing High Backfill Slope Reinforced with Anti-Slide Piles under Static Load Based on Numerical Simulation

Deformation Law of Tunnels Using Double-Sidewall Guide Pit Method under Different Excavation Sequences

Study on the shear and deformation characteristics of geogrid-reinforced gravelly soils based on large-scale triaxial tests

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