An experimental study of the active failure mechanism of narrow backfills installed behind rigid retaining walls conducted using Geo-PIV

Xu, Li; Chen, Hao-biao; Chen, Fuquan; Lin, Yujian; Lin, Cheng

doi:10.1007/s11440-021-01438-9

Cited by 20 publications

(9 citation statements)

References 22 publications

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“…Differing from the passive mechanism, with a narrow enough space between the retaining wall and the existing structure, the reflective failure surface was not observed in the model test conducted by Rui et al 5 However, this result does not mean that there is no reflective failure surface development in the active limit state. The reflective failure surface can be observed in the model test conducted by Xu et al 48 However, the reflective development of the active failure surface only occurred in the tests conducted by Xu et al, 48 while no similar phenomenon was observed in the tests conducted by other works in the literature. This may be related to the soil properties, interface friction angle, and test conditions.…”

Section: Analysis Of the Numerical Resultsmentioning

confidence: 86%

“…However, this result does not mean that there is no reflective failure surface development in the active limit state. The reflective failure surface can be observed in the model test conducted by Xu et al 48 . However, the reflective development of the active failure surface only occurred in the tests conducted by Xu et al, 48 while no similar phenomenon was observed in the tests conducted by other works in the literature.…”

Section: Discrete Element Simulationmentioning

confidence: 85%

“…The reflective failure surface can be observed in the model test conducted by Xu et al 48 . However, the reflective development of the active failure surface only occurred in the tests conducted by Xu et al, 48 while no similar phenomenon was observed in the tests conducted by other works in the literature. This may be related to the soil properties, interface friction angle, and test conditions.…”

Section: Discrete Element Simulationmentioning

confidence: 85%

See 2 more Smart Citations

Discrete element analysis and analytical method on failure mechanism of retaining structures with narrow granular backfill

Li,

Chen,

Chen

et al. 2023

Num Anal Meth Geomechanics

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Ascertaining failure mechanism is a prerequisite of the derivation for earth pressure against retaining structures. Retaining structures constructed adjacent to existing structures and excavation with narrow backfill have become common in practical engineering. The backfill width has a significant effect on the failure mechanism, requiring further study. In this study, a series of discrete element analyses are conducted to investigate the shear localization in soil mass behind retaining structures with narrow backfill in the active and passive limit states at the grain scale. Furthermore, the distribution characteristic of failure surfaces in soil mass is discussed from three aspects: the development of the failure surface, the state of soil mass behind retaining structures, and the shape of the failure surface. Based on the typical nonlinear failure mechanisms observed in particle rotation contours with various backfill widths and interface friction angles, the failure mechanisms behind retaining structures with narrow spacing are categorized into three types according to the backfill widths. According to the stress characteristics of interfaces under different failure mechanisms, the variational method and Mohr stress circle analysis are adapted to analytically obtain the failure surfaces behind the retaining structure with narrow backfill. Comparisons with results obtained by the discrete element simulation show a reasonable agreement. In addition, a series of parameter studies are conducted to investigate the effect of backfill widths and interface friction angles on the failure mechanism.

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Section: Analysis Of the Numerical Resultsmentioning

confidence: 86%

Section: Discrete Element Simulationmentioning

confidence: 85%

Section: Discrete Element Simulationmentioning

confidence: 85%

See 1 more Smart Citation

Discrete element analysis and analytical method on failure mechanism of retaining structures with narrow granular backfill

Li,

Chen,

Chen

et al. 2023

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

“…That is, the point of maximum active earth pressure is located around the wall toe. However, this intuitionistic phenomenon does not well match with the experimental results under the RT mode reported by Deng and Haigh (2020) and Xu et al (2022). Using centrifuge tests, Deng and Haigh (2020) pointed out that the shallow layer of backfills forms a highly-stressed zone, causing the earth pressure at the top to increase with the active wall movements.…”

Section: Arching-induced Principal Stress Rotationmentioning

confidence: 77%

“…The roughness factor of the wall-soil interface was 0.507. More detailed parameters can refer to Xu et al (2022). On this basis, we produce a FELA numerical model to obtain the upper bound (UB) and lower bound (LB) solutions.…”

Section: Cohesionless Soilsmentioning

confidence: 99%

Earth pressure in narrow cohesive-fictional soils behind retaining walls rotated about the top: An analytical approach

Yang

Lai

Liu

2022

Computers and Geotechnics

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Discrete element study of stresses and deformation on gravity retaining wall under static loading

Singh,

Chakraborty,

Mahajan

2024

Granular Matter

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An experimental study of the active failure mechanism of narrow backfills installed behind rigid retaining walls conducted using Geo-PIV

Cited by 20 publications

References 22 publications

Discrete element analysis and analytical method on failure mechanism of retaining structures with narrow granular backfill

Discrete element analysis and analytical method on failure mechanism of retaining structures with narrow granular backfill

Earth pressure in narrow cohesive-fictional soils behind retaining walls rotated about the top: An analytical approach

Discrete element study of stresses and deformation on gravity retaining wall under static loading

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