High-Speed Train-Induced Vibration of Bridge–Soft Soil Systems: Observation and MTF-Based ANSYS Simulation DOI Creative Commons

Kangming Zhong,

Xiaojun Li, Zhenghua Zhou

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(8), P. 2575 - 2575

Published: Aug. 21, 2024

In this paper, a multi-transmitting formula (MTF) was integrated into ANSYS software through secondary development, enabling dynamic finite element simulation of wave propagation in infinite domains. The numerical reliability and accuracy the MTF were verified plane problem involving homogeneous elastic half-space, as well 3D scattering source problems three-layered soil site. Additionally, comparative analysis various artificial boundaries conducted to highlight advantages MTF. Field observations environmental vibrations caused by high-speed railway operations revealed localized amplification along depth direction at Kunshan segment Beijing–Shanghai railway. Based on these observations, series analyses using customized with investigate underlying causes mechanisms phenomenon, spatial variation characteristics foundation induced bridge during train operations. This study reveals mechanism which combined effect piles soft layers influences peak ground accelerations site vibrations. It also demonstrates that presence piers pile foundations effectively reduces vibration intensity vicinity railway, playing crucial role mitigating

Language: Английский

Numerical and in-situ investigation on bilateral double-wall barriers in mitigating metro train-induced vibrations DOI
Weili Luo,

Shibang Deng

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 469, P. 140502 - 140502

Published: Feb. 25, 2025

Language: Английский

Citations

0
Prediction of high-speed railway vibration signal and its wave field energy characteristics in viaduct site based on simplified source mechanical model DOI
Wenya Yuan, Baoxin Jia, Zhiyang Zhou

et al.

Journal of Vibration and Control, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

This paper proposes a simplified seismic source mechanics model for predicting high-speed railway vibration signals in viaduct sites and further analyzes the frequency spatial energy characteristics of wave field based on numerical simulation. The method effectively reduces prediction time environmental trains. It aligns more with actual than existing model. First, is established by equating mobile train as force excited multiple bridge piers delayed excitation; subsequently, distribution site are reflected Finally, time-domain frequency-domain simulated railroad verified on-site monitoring tests. Overall, this new can be applied to rapid trains site, small computational workload, used assessment other fields, which improves efficiency under premise ensuring accuracy signal characteristics.

Language: Английский

Citations

0
Vibration isolation performance of quasi constant natural frequency isolation pads associated with test verification DOI
Quanwu Zhang, Weixing Shi,

Yuting Ouyang

et al.

Engineering Structures, Journal Year: 2024, Volume and Issue: 324, P. 119328 - 119328

Published: Nov. 21, 2024

Language: Английский

Citations

1
High-Speed Train-Induced Vibration of Bridge–Soft Soil Systems: Observation and MTF-Based ANSYS Simulation DOI Creative Commons

Kangming Zhong,

Xiaojun Li, Zhenghua Zhou

et al.

Buildings, Journal Year: 2024, Volume and Issue: 14(8), P. 2575 - 2575

Published: Aug. 21, 2024

In this paper, a multi-transmitting formula (MTF) was integrated into ANSYS software through secondary development, enabling dynamic finite element simulation of wave propagation in infinite domains. The numerical reliability and accuracy the MTF were verified plane problem involving homogeneous elastic half-space, as well 3D scattering source problems three-layered soil site. Additionally, comparative analysis various artificial boundaries conducted to highlight advantages MTF. Field observations environmental vibrations caused by high-speed railway operations revealed localized amplification along depth direction at Kunshan segment Beijing–Shanghai railway. Based on these observations, series analyses using customized with investigate underlying causes mechanisms phenomenon, spatial variation characteristics foundation induced bridge during train operations. This study reveals mechanism which combined effect piles soft layers influences peak ground accelerations site vibrations. It also demonstrates that presence piers pile foundations effectively reduces vibration intensity vicinity railway, playing crucial role mitigating

Language: Английский

Citations

0