Shakedown analysis of cyclic plastic deformation characteristics of unbound granular materials under moving wheel loads

Xiao, Yuanjie; Zheng, Keyang; Chen, Liuxin; Mao, Jianfeng

doi:10.1016/j.conbuildmat.2018.02.064

Cited by 61 publications

(19 citation statements)

References 30 publications

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“…In conclusion, the resilient test results of UGM Bréfauchet can verify the improved Boyce-Hornych model (Equations (12)-(15)) which is accurate and general for the unbound granular materials. (15). As described by correlation coefficients above, the very good estimated results (both εv r and εq r ) can be obtained.…”

Section: Determination Of Resilient Deformation With Modified Boyce Mmentioning

confidence: 53%

“…As described by correlation coefficients above, the very good estimated results (both ε v r and ε q r ) can be obtained. (15). As described by correlation coefficients above, the very good estimated results (both εv r and εq r ) can be obtained.…”

Section: Determination Of Resilient Deformation With Modified Boyce Mmentioning

confidence: 53%

“…The parameter optimization of Equations (8)-(11) for UGM Bréfauchet with γ 1 is presented in Table 5 and the parameter optimization of Equations (12)-(15) for UGM Bréfauchet with γ 3 is presented in Table 6. Based on the result of T5-w = 4.2%, T7-w = 4.3%, and T8-w = 4.6%, it can be stated that both sets of equations have good correlation coefficients for the resilient behaviour and the Equations (12)- (15) show a more accurate modelling result. The curves of T6-w = 3.5%, in different stress paths, are close together as shown in Figures 15a and 16a.…”

Section: Determination Of Resilient Deformation With Modified Boyce Mmentioning

confidence: 89%

“…Besides, the large UGM particles bring difficulties to fix the Hall-Effect strain measurement sensors, which is an accurate measurement method, on the triaxial sample. As a result, the actuator LVDT, external LVDT or internal LVDT are often applied in RLTTs to replace the Hall effect sensors [14,15]. However, Zhalehjoo et al, [16] showed significantly different Mr values with actuator LVDT, external LVDT, internal LVDT and Hall effect sensors based on a comprehensive comparative study.…”

Section: Introductionmentioning

confidence: 99%

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Hydro-Mechanical Behaviour of an Unbound Granular Base Course Material Used in Low Traffic Pavements

Jing

Chazallon

2020

Materials

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This paper deals with the mechanical behaviour, especially the permanent deformation and resilient deformation of an unbound granular material (UGM) from Bréfauchet quarry which is used as base layer material in low traffic pavements for full-scale tests at IFSTTAR in France. Medium-scale repeated load triaxial tests (RLTT) are carried out at different water contents and the results show that both permanent and resilient deformations increase with water content. Besides, two techniques of fixing the sensors in materials with large particles for RLTTs are proposed and compared with each other. The results suggest that the tube method is more suitable for the UGM for an accurate measurement and a good adaptability is obtained during the RLTT. Based on the test results of UGM Bréfauchet, the modelling work is performed with improved models used previously for a sandy material. It appears that both the permanent and resilient behaviours of different unbound granular materials can be well captured by the proposed equations considering the effects of water content and anisotropy. This study is helpful to understand the evolution of permanent and resilient deformation in different granular layers, especially for the base layer, in low traffic pavements. The verified models can be used for other similar granular materials and this will lead to reducing the number of tests required to predict the deformation behaviour of granular materials.

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Section: Determination Of Resilient Deformation With Modified Boyce Mmentioning

confidence: 53%

Section: Determination Of Resilient Deformation With Modified Boyce Mmentioning

confidence: 53%

Section: Determination Of Resilient Deformation With Modified Boyce Mmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Hydro-Mechanical Behaviour of an Unbound Granular Base Course Material Used in Low Traffic Pavements

Jing

Chazallon

2020

Materials

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“…It expresses the accumulated permanent axial strain at any given number of cycles as a function of applied stresses ratio and the length of the stress path. A series of laboratory tests using a triaxial cell were conducted on two unbound granular material types by varying simultaneously the axial stress and the radial stress, which showed that the plastic strain behaviour was stress-path dependent [19].…”

Section: Introductionmentioning

confidence: 99%

Full scale laboratory testing of ballast and concrete slab tracks under phased cyclic loading

Čebašek

Esen

Woodward

et al. 2018

Transportation Geotechnics

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Full-scale laboratory-based testing is used to compare the long-term settlement performance of a precast concrete slab track section to a ballasted track (with concrete sleepers) resting on a compacted substructure. The railway track substructure is constructed from a 1.2 metre deep combined subgrade and frost protection layer, according to modern high-speed rail standards such as those specified in Germany. Phased cyclic loading is then used to simulate the primary loading mechanism of a train after 3.4 million load cycles representing train passages. Displacement transducers, earth pressure cells and accelerometers are employed to determine the permanent settlement, the cyclic displacement, transient stresses and vibrations of the track. The equipment, loading combinations, material properties and experimental displacement results are presented and compared. The results indicate that the ballasted track experienced 20 times more settlement when compared to the concrete slab track under the same loading conditions, even though the ballasted track was tested at a slightly higher compacted state due to the concrete slab track test being conducted first.

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Cumulative permanent strain and critical dynamic stress of silty filler for subgrade subjected to intermittent cyclic loading of trains

Nie

Leng

et al. 2021

Bull Eng Geol Environ

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Shakedown analysis of cyclic plastic deformation characteristics of unbound granular materials under moving wheel loads

Cited by 61 publications

References 30 publications

Hydro-Mechanical Behaviour of an Unbound Granular Base Course Material Used in Low Traffic Pavements

Hydro-Mechanical Behaviour of an Unbound Granular Base Course Material Used in Low Traffic Pavements

Full scale laboratory testing of ballast and concrete slab tracks under phased cyclic loading

Cumulative permanent strain and critical dynamic stress of silty filler for subgrade subjected to intermittent cyclic loading of trains

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