3D Spectral element model with a space-decoupling technique for the response of transversely isotropic pavements to moving vehicular loading

Man, Jianhong; Yan, Kezhen; Miao, Yu; Liu, Yang; Yang, Xu; Diab, Aboelkasim; You, Lihua

doi:10.1080/14680629.2021.1986121

Cited by 22 publications

(3 citation statements)

References 34 publications

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“…For FWD or HWD measurements, as presented in many references (see for example [11,21]), a significant improvement in the model M can be obtained by considering the dynamic forces and possibly the viscoelastic behavior of the asphalt layers. In this case, the specific mass of the pavement materials can reasonably be approximated by reference values that depend on their category without the need to introduce new unknown numerical parameters.…”

Section: Visco-dynamic Models For Fwd or Hwd Measurementsmentioning

confidence: 99%

Orthogonal Set of Indicators for the Assessment of Flexible Pavement Stiffness from Deflection Monitoring: Theoretical Formalism and Numerical Study

et al. 2022

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The monitoring of pavements along roads is generally based on the use of indicators directly derived from measurements. More specifically, the bearing capacity of pavements is often simply deduced from either the maximum deflection value measured or the difference between two measured values along the deflection basin. This paper proposes a methodology to define a set of orthogonal indicators adapted to the structure being evaluated. This methodology is presented for deflection measurements recorded on a flexible pavement simulated by the Burmister model and consists of searching the weighting functions to calculate different indicators as linear forms of the deflection bowl. Weighting functions are defined for each indicator in order to maximize its sensitivity to a given structural parameter without being sensitive to the other structural parameters. The paper presents the various steps involved in constructing the indicators. A numerical example of an application shows that variations of each indicator follow the Young’s modulus variations specific to this indicator. Several extensions of this method are also introduced for other mechanical models or instrumented pavements.

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Section: Visco-dynamic Models For Fwd or Hwd Measurementsmentioning

confidence: 99%

Orthogonal Set of Indicators for the Assessment of Flexible Pavement Stiffness from Deflection Monitoring: Theoretical Formalism and Numerical Study

et al. 2022

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“…For example, the base course of asphalt pavement comprises various-shaped granular materials, and its internal structure expresses significant anisotropic characteristics. The anisotropic properties are attributed to the shape, distribution, orientation, degree of compaction, void structure, and so forth, of the granular materials in asphalt pavements (15)(16)(17). Cheng et al (18) reported that the asphalt layer exhibits bimodular properties (tensile modulus 6 ¼ compressive modulus).…”

mentioning

confidence: 99%

“…Pavement design based on isotropic factors underestimates the strains related to permanent deformation and fatigue cracks. Man et al ( 17 ), You et al ( 24 ), and Wu et al ( 25 ) studied the influence of the transverse isotropy of the surface and base courses materials on the stress, strain, and road surface deflection of each structural layer of the road under the effect of non-uniformly distributed loads. Considering the cross-anisotropy of the unbound aggregates base (UAB for short) and subgrade layers, Lu and Zheng ( 26 ) analyzed the dynamic responses of viscoelastic asphalt pavement.…”

mentioning

confidence: 99%

Dynamic Viscoelastic Response of Asphalt Pavement With Random Transversely Isotropic Base Courses

You

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Diagnosis of the dynamic response of an asphalt pavement structure coupled with involving inherent anisotropic properties of pavement materials serves as a vital tool for pavement analysis and design platforms. The mechanical response of asphalt pavement is strongly influenced by the random anisotropic properties (simplified as transversely isotropic properties in this study) because of the shape, distribution, orientation, degree of compaction, void structure, and so forth, of the granular materials in asphalt pavements. This study aims to introduce a computational framework by generating a three-dimensional finite element-based program to analyze the influence of thermo-viscoelasticity of the asphalt layer and transverse isotropy of the base courses and its randomness on asphalt pavements under the effect of moving vehicle loading. The accuracy and efficiency of the developed numerical program were verified by comparing our results with previous studies. Concurrently, the influences of random field conditions, transversely isotropic properties, and the temperature field were involved in assessing their action on the fatigue life prediction of pavement. It was concluded that the fatigue life of the asphalt pavement model, considering the transverse isotropy of the material, random field, and temperature field, was reduced by 48.1%, which would mislead the state assessment of asphalt pavements. Therefore, during asphalt pavement design and its viscoelastic response analysis, it is recommended to consider the influence of the random modulus, temperature fields, and transversely isotropic properties on the structural assessments.

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Dynamic coupled thermo-hydro-mechanical problem for heterogeneous deep-sea sediments under vibration of mining vehicle

Wang

Shi

et al. 2023

Appl. Math. Mech.-Engl. Ed.

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3D Spectral element model with a space-decoupling technique for the response of transversely isotropic pavements to moving vehicular loading

Cited by 22 publications

References 34 publications

Orthogonal Set of Indicators for the Assessment of Flexible Pavement Stiffness from Deflection Monitoring: Theoretical Formalism and Numerical Study

Orthogonal Set of Indicators for the Assessment of Flexible Pavement Stiffness from Deflection Monitoring: Theoretical Formalism and Numerical Study

Dynamic Viscoelastic Response of Asphalt Pavement With Random Transversely Isotropic Base Courses

Dynamic coupled thermo-hydro-mechanical problem for heterogeneous deep-sea sediments under vibration of mining vehicle

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