Safety evaluation of a vehicle–bridge interaction system using the pseudo-excitation method

Zhang, Nan; Zhou, Zi-ji; Wu, Zhaozhi

doi:10.1007/s40534-021-00259-6

Cited by 18 publications

(7 citation statements)

References 21 publications

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“…Although the time-domain method can consider the effect of various factors comprehensively, it is still difficult to evaluate the reliability of the train-bridge system. Therefore, an increasing number of random vibration methods are proposed recently, which includes the probability density evolution method (PDEM) [18], pseudoexcitation method (PEM) [19][20][21], statistical linearization [22], surrogate model approach [23,24], subset simulation [25], new point estimation method [26] and other theories or methods [27,28].…”

Section: Train-bridge Coupling Vibration Modelmentioning

confidence: 99%

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Xiang

Wang

et al. 2022

Rail. Eng. Science

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In recent years, high-speed railways in China have developed very rapidly, and the number and span of the railway bridges are keeping increasing. Meanwhile, frequent extreme disasters, such as strong winds, earthquakes and floods, pose a significant threat to the safety of the train–bridge systems. Therefore, it is of paramount importance to evaluate the safety and comfort of trains when crossing a bridge under external excitations. In these aspects, there is abundant research but lacks a literature review. Therefore, this paper provides a comprehensive state-of-the-art review of research works on train–bridge systems under external excitations, which includes crosswinds, waves, collision loads and seismic loads. The characteristics of external excitations, the models of the train–bridge systems under external excitations, and the representative research results are summarized and analyzed. Finally, some suggestions for further research of the coupling vibration of train–bridge system under external excitations are presented.

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Section: Train-bridge Coupling Vibration Modelmentioning

confidence: 99%

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Xiang

Wang

et al. 2022

Rail. Eng. Science

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“…The dynamic effect on structures, such as bridges, caused by moving vehicles is a topic that has been attracting researchers and engineering practitioners for a long time. These effects can be assessed through transient moving load models [1][2][3] or by using more realistic vehicle-structure interaction (VSI) models [4][5][6][7]. While the first method is restricted to the analysis of the structural response, since the vehicle is represented as a set of moving loads corresponding to its static axle loads, the latter can also be used to assess the vehicle's behavior, including its dynamic response and the contact forces that arise from the contact interface.…”

Section: Introductionmentioning

confidence: 99%

Wheel–rail contact model for railway vehicle–structure interaction applications: development and validation

Montenegro

Calçada

2023

Rail. Eng. Science

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An enhancement in the wheel–rail contact model used in a nonlinear vehicle–structure interaction (VSI) methodology for railway applications is presented, in which the detection of the contact points between wheel and rail in the concave region of the thread–flange transition is implemented in a simplified way. After presenting the enhanced formulation, the model is validated with two numerical applications (namely, the Manchester Benchmarks and a hunting stability problem of a suspended wheelset), and one experimental test performed in a test rig from the Railway Technical Research Institute (RTRI) in Japan. Given its finite element (FE) nature, and contrary to most of the vehicle multibody dynamic commercial software that cannot account for the infrastructure flexibility, the proposed VSI model can be easily used in the study of train–bridge systems with any degree of complexity. The validation presented in this work proves the accuracy of the proposed model, making it a suitable tool for dealing with different railway dynamic applications, such as the study of bridge dynamics, train running safety under different scenarios (namely, earthquakes and crosswinds, among others), and passenger riding comfort.

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“…Researchers have conducted a lot of work about the vehicle-track-bridge coupled system. Zhang [7] proposed an analysis method based on the pseudo-excitation method for the vehicle-bridge interaction system and obtained the probability density functions for safety factors and the probabilities of safety factors exceeding the given limits. Gao [1] proposed a vehicle-track-bridge coupled analysis method based on forced vibration, pointing out that local fastener failure will slightly a ect the vibration of the track and carbody, but it will signi cantly intensify the interaction between wheel and rail.…”

Section: Introductionmentioning

confidence: 99%

Study on the Vertical Stiffness of Bridge Expansion Joints Based on the Vehicle-Track-Bridge Coupled Model

Wang

Gao

Yang

2022

Shock and Vibration

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Bridge expansion joints (BEJs) are equipped at the girder end of long-span railway bridges to ensure the reliable transition of the track. BEJs should have suitable dynamic stiffness to ensure the running safety and stability of the vehicle. To explore the influence of dynamic vertical stiffness of BEJs on the dynamic response of vehicle, track, and bridge, a three-dimensional vehicle-track-bridge coupled model is established, and the influence of sleeper spacing and vehicle speed are taken into consideration. Taking a high-speed railway line in China as a case study, the dynamic response of the whole system is calculated. The results show that (1) the dynamic response of BEJs and the vehicle is affected by the vehicle speed and sleeper spacing. With the increase of vehicle speed and sleeper spacing, the dynamic response of the system increases; (2) the vertical stiffness of BEJs will affect the dynamic response of BEJs and the interaction between the wheel and rail: the vertical dynamic displacement of movable sleeper will exceed the limit if the vertical stiffness of pressure-bearing is insufficient, and the wheel unloading rate may exceed the limit if the vertical stiffness of the cushion plate is insufficient. Based on the results, the larger vertical stiffness of the cushion plate and pressure-bearing is recommended. These results have been applied to the design of BEJs on the studied railway line, which are in good service condition at present.

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Safety evaluation of a vehicle–bridge interaction system using the pseudo-excitation method

Cited by 18 publications

References 21 publications

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

A comprehensive review on coupling vibrations of train–bridge systems under external excitations

Wheel–rail contact model for railway vehicle–structure interaction applications: development and validation

Study on the Vertical Stiffness of Bridge Expansion Joints Based on the Vehicle-Track-Bridge Coupled Model

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