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RISSubstructure Simulation of Inhomogeneous Track and Layered Ground Dynamic Interaction under Train Passage
Publisher: American Society of Civil Engineers
Abstract: The vibrations in track and ground induced by train passages are investigated by the substructure method with due consideration to dynamic interaction between an inhomogeneous track system comprising continuous rails and ...
High-Cycle Computational Model for Accumulative Deformation of Granular Material under Repeated Traffic Loading
Publisher: ASCE
Abstract: The ballast, essentially unbound granular material, contributes more than 50% to the total settlement of the ballasted railway track, greatly affecting the safety and comfort of train operation. To reduce the deformation-related ...
An Efficient Bayesian Updating Method and Its Application in the Structural Analysis of Underground Tunnels
Publisher: American Society of Civil Engineers
Abstract: Model updating (i.e., inverse problems) involving high-dimension and nonlinearity plays an increasingly important role in various research fields, e.g., digital twin model updating. Bayesian updating has become ...
Geogrid-Aggregate Interlock Mechanism Investigated through Aggregate Imaging-Based Discrete Element Modeling Approach
Publisher: American Society of Civil Engineers
Abstract: Geogrids are commonly used in road construction for stabilization and reinforcement purposes. Factors affecting the interaction or interlock mechanisms between geogrids and aggregates may include, but are not limited to, ...
Evolution of Soil Arching in Geosynthetic-Reinforced Pile-Supported Embankment of a High-Speed Railway under Long-Term Train Traffic Loading and Excessive Subsoil Settlement
Publisher: American Society of Civil Engineers
Abstract: Soil arching formed in geosynthetic-reinforced pile-supported (GRPS) embankments of high-speed railways plays an important role in transferring the forces within the embankments. In most cases of notable settlements and ...
Micromechanical Particle Interactions in Railway Ballast through DEM Simulations of Direct Shear Tests
Publisher: American Society of Civil Engineers
Abstract: Particle shape properties can significantly affect the load response behavior and field performance of the uniformly graded ballast layer in railway track structures. Particle contact and the related micromechanical behavior ...
Micromechanical Particle Interactions in Railway Ballast through DEM Simulations of Direct Shear Tests
Publisher: American Society of Civil Engineers
Abstract: Particle shape properties can significantly affect the load response behavior and field performance of the uniformly graded ballast layer in railway track structures. Particle contact and the related micromechanical behavior ...
Cyclic and Postcyclic Triaxial Testing of Ballast and Subballast
Publisher: American Society of Civil Engineers
Abstract: Ballast and subballast are two layers of noncohesive, granular materials with different grain sizes filled in the track substructure to bear traffic loadings from train passages. The performance and sustainability of a ...
Cyclic and Postcyclic Triaxial Testing of Ballast and Subballast
Publisher: American Society of Civil Engineers
Abstract: Ballast and subballast are two layers of noncohesive, granular materials with different grain sizes filled in the track substructure to bear traffic loadings from train passages. The performance and sustainability of a ...
Quantification of Railway Ballast Degradation by Abrasion Testing and Computer-Aided Morphology Analysis
Publisher: ASCE
Abstract: Ballast degradation (particle breakage and abrasion) induced by repeated train loads may lead to insufficient track stiffness and excessive track settlement. For safe operation and effective maintenance of ballasted railroad ...