A5019915446- Railway Engineering and Dynamics
- Structural Engineering and Vibration Analysis
- Engineering Structural Analysis Methods
- Wind and Air Flow Studies
- Aerodynamics and Fluid Dynamics Research
- Civil and Geotechnical Engineering Research
- Mechanical stress and fatigue analysis
- Aeolian processes and effects
- Soil Mechanics and Vehicle Dynamics
- Granular flow and fluidized beds
Chang'an University
2025
China Railway Construction Machinery Research & Design Institute
2013-2014
To investigate the non-stationary characteristics of wind field at U-shaped canyon bridge site and its impact on fluctuating characteristics, a observation tower was installed near cable-stayed bridge. The Augmented Dickey–Fuller (ADF) test employed to assess stationarity speed series, while discrete wavelet transform (DWT) applied reconstruct time-varying mean analyze effect characteristics. Results indicate that speeds in this region exhibit bimodal distribution with Weibull-Gamma mixed...
When ballast materials are subjected to cyclic loading, as a result, the change of particles micromechanical properties will lead degradation, permanent deformations on railways step by step. In this paper, it presented coupling discrete particle-flow simulation model railway for tamping loading. Tamping frequency changes from 25HZ 60HZ in numerical process. Simulation results that compaction rate increases linearly with up characteristic 35HZ and then declines inverse proportion frequency....
Tamping operation is an important part of railway maintenance work. The porosity ballast quality evaluation index during tamping process. In this paper, based on the discrete characteristics ballast, element analysis model created using method, numerical simulations are performed to study evolution under sleeper This paper focuses influence vibration frequency tines process; optimal obtained from simulation and compared with actual recommended by China Railway Large Maintenance Machinery...