Version 1
: Received: 29 August 2024 / Approved: 29 August 2024 / Online: 29 August 2024 (12:20:46 CEST)
How to cite:
Pang, Z.; Gao, M.; Li, G.; Yang, J.; Yang, F. Wavelength Characteristics of Vertical Deformation and Train Dynamics Simulation of Long-Span Cable-Stayed Bridges under Complex Loads. Preprints2024, 2024082146. https://doi.org/10.20944/preprints202408.2146.v1
Pang, Z.; Gao, M.; Li, G.; Yang, J.; Yang, F. Wavelength Characteristics of Vertical Deformation and Train Dynamics Simulation of Long-Span Cable-Stayed Bridges under Complex Loads. Preprints 2024, 2024082146. https://doi.org/10.20944/preprints202408.2146.v1
Pang, Z.; Gao, M.; Li, G.; Yang, J.; Yang, F. Wavelength Characteristics of Vertical Deformation and Train Dynamics Simulation of Long-Span Cable-Stayed Bridges under Complex Loads. Preprints2024, 2024082146. https://doi.org/10.20944/preprints202408.2146.v1
APA Style
Pang, Z., Gao, M., Li, G., Yang, J., & Yang, F. (2024). Wavelength Characteristics of Vertical Deformation and Train Dynamics Simulation of Long-Span Cable-Stayed Bridges under Complex Loads. Preprints. https://doi.org/10.20944/preprints202408.2146.v1
Chicago/Turabian Style
Pang, Z., Jingjing Yang and Fei Yang. 2024 "Wavelength Characteristics of Vertical Deformation and Train Dynamics Simulation of Long-Span Cable-Stayed Bridges under Complex Loads" Preprints. https://doi.org/10.20944/preprints202408.2146.v1
Abstract
Ballastless track has high smoothness, but the laying requirements are strict. Therefore, the maximum span of cable-stayed bridges laying ballastless tracks is 392m. For laying ballastless track structures over larger spans, the deformation characteristics of long-span cable-stayed Bridges under complex loads are incomplete, and the interaction between long-span bridge-track structures is unclear. The influence of wavelength of cosine wave on the track- bridge mapping of different orbital structures was explored. The wavelength characteristics of vertical deformation under complex loads were investigated. The track-bridge integrated model for the cable-stayed bridge was establish to analyze the mapping relationship between rail and bridge and wavelength characteristics of deformation. Based on mapping relationships and wavelength characteristics of deformation, the Train-Track-Bridge dynamic simulation model was simplified. The results show that when the minimum wavelength of bridge deformation surpasses 6 m, 10 m, and 16 m, the rail deformation in the ballasted track, the longitudinal-connected track, and the unit slab-type ballastless track accurately mirrors the deformation of the bridge. For the span of bridge ranging from 200 m to 600 m, the wavelength of vertical deformation ranges from 21 to 1270 m under complex loads. During local loads, the vertical deformation below the 200 m wavelength constitutes a significant proportion near the pie. Considering the influence of the deformation on train vibration response, the Train-Bridge dynamic coupling model can be employed to treat the track structure as a load to reduce complexity of model and enhance the calculation efficiency.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
