Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An efficient analysis framework for high-speed train-bridge coupled vibration under non-stationary winds
The consideration of train-bridge system under winds has been attracted extensive attentions, but the winds are typically treated as stationary. This stationary assumption clearly presents a departure from the field observations during extreme storms (e.g., tropical cyclones, thunderstorms and tornadoes). The assurance of structural safety and reliability requires accurate modeling of the non-stationary features in the coupled high-speed train-bridge vibration system. In this study, an efficient analysis framework for high-speed train-bridge coupled vibrations under non-stationary winds based on the pseudo excitation method (PEM) has been developed, in which the non-stationary winds were transformed into a series of pseudoharmonic excitation vectors. The high simulation fidelity and computational efficiency of the established analysis framework were verified based on a case study where the train run over a seven-span continuous girder high-speed railway bridge. A number of transient durations and maximum wind speeds associated with various extreme events are investigated to comprehensively examine the non-stationary effects on the high-speed train-bridge coupled vibrations. It has been demonstrated that the non-stationary characteristics of winds presented important contributions to the dynamic performance of the coupled train-bridge interaction system.
An efficient analysis framework for high-speed train-bridge coupled vibration under non-stationary winds
The consideration of train-bridge system under winds has been attracted extensive attentions, but the winds are typically treated as stationary. This stationary assumption clearly presents a departure from the field observations during extreme storms (e.g., tropical cyclones, thunderstorms and tornadoes). The assurance of structural safety and reliability requires accurate modeling of the non-stationary features in the coupled high-speed train-bridge vibration system. In this study, an efficient analysis framework for high-speed train-bridge coupled vibrations under non-stationary winds based on the pseudo excitation method (PEM) has been developed, in which the non-stationary winds were transformed into a series of pseudoharmonic excitation vectors. The high simulation fidelity and computational efficiency of the established analysis framework were verified based on a case study where the train run over a seven-span continuous girder high-speed railway bridge. A number of transient durations and maximum wind speeds associated with various extreme events are investigated to comprehensively examine the non-stationary effects on the high-speed train-bridge coupled vibrations. It has been demonstrated that the non-stationary characteristics of winds presented important contributions to the dynamic performance of the coupled train-bridge interaction system.
An efficient analysis framework for high-speed train-bridge coupled vibration under non-stationary winds
He, Xu-hui (Autor:in) / Shi, Kang (Autor:in) / Wu, Teng (Autor:in)
Structure and Infrastructure Engineering ; 16 ; 1326-1346
01.09.2020
21 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Vibration of coupled train and cable-stayed bridge systems in cross winds
| Online Contents | 2004
Research into the Parameter Influence on Coupled Vibration Analysis of High Speed Train and Bridge
| British Library Conference Proceedings | 2011
Wind-Train-Track-Bridge Coupled Vibration Analysis on Railway Suspension Bridge Design
| Springer Verlag | 2024
Time domain method for high speed train - bridge vertical stochastic vibration analysis
| British Library Online Contents | 2008
Running safety analysis of a train on the Tsing Ma Bridge under turbulent winds
| Online Contents | 2010