On use of train-track-subgrade dynamic model for investigating the train-induced cumulative deformation of subgrade and its dynamic effects

Z Li, L Xu, W Wang, J Zhang, J Wang, B Peng… - Applied Mathematical …, 2024 - Elsevier
This work focuses on two research projects. The first project deals with the prediction of the
train-induced cumulative deformation of the high-speed railway subgrade based on the train …

A method for vehicle–track–soil interaction analysis considering soil deformation

Z Li, L Xu, W Wang - Archives of Civil and Mechanical Engineering, 2022 - Springer
In this work, an engineering practical method is put forward to characterize the static and
dynamic map** relationship between soil deformation and its induced system …

Numerical modelling and analysis for nonlinear stiffness of subgrade soil subject to 3-D vehicle-track interaction

Z Li, L Xu, P Liu, W Wang, Z Zeng - Transportation Geotechnics, 2023 - Elsevier
In this paper, a subgrade model with nonlinear stiffness is established and integrated into a
previously constructed 3-D vehicle-track-subgrade (VTS) dynamic model, in which the …

An advance vehicle-slab track-soil dynamic interaction model based on differential quadrature finite element method

P Liu, X Lei, Y Bin - Applied Mathematical Modelling, 2024 - Elsevier
To solve the problem of large matrix size and low computational efficiency of the finite
element model in the vehicle-track-soil model, the differential quadraticity finite element …

Probabilistic assessment of high-speed vehicle-induced cumulative settlement of railway soft soil subgrade based on direct probability integral method

H Liu, Z Li, L Xu - Mechanics Based Design of Structures and …, 2024 - Taylor & Francis
Due to the variability of train loads, soil properties, and other factors, the cumulative
settlement of high-speed railway soft soil subgrade induced by cyclic trains holds strong …

Study on the long-distance settlement threshold of high-speed railway subgrade based on vehicle responses

Z Li, W Wang, L Xu, J Xu - Journal of Vibration and Control, 2024 - journals.sagepub.com
The long-distance and large-scale subgrade settlement is a key issue in high-speed railway
(HSR). This work focuses on the long-distance settlement threshold for the HSR subgrade. A …

Modelling and analysis of train-track-subgrade-soil dynamic interaction subjected to the interfacial damage of slab induced by uneven settlement

W Wang, Z Li, L Xu, X Wei - Applied Mathematical Modelling, 2024 - Elsevier
In this paper, a dynamic model is established to investigate the dynamic behavior of train-
track-subgrade-soil (TTSS) interaction. The effects of interfacial damage of the track slab …

[HTML][HTML] Riding safety prediction of a high-speed train running on transition zone under foundation settlement

B Peng, X He, L Xu, Z Li, Y Guo - Advances in Engineering Software, 2024 - Elsevier
The settlement of piers and subgrade bending deformation are widely recognized as
common issues in the transition zones of high-speed railway bridges. This study aims to …

An improved method for slab track-soil interaction considering soil surface deformation

Z Li, L Xu, X Deng - Mechanics Based Design of Structures and …, 2024 - Taylor & Francis
The additional deformation of slab track structure subject to arbitrary soil deformation, and
subsequently the dynamic deformation coordination between the track and the soil due to a …

Spectral element method for random vibration analysis of the vehicle-track coupling system

J Xu, Y Ye, X Ma, P Wang, Q Liu - Journal of Vibration and …, 2024 - journals.sagepub.com
In this paper, we propose a new random vibration analysis model for the vertical vehicle-
track coupling system, which combines the symplectic method and the spectral element …