Exact Time Integration for Dynamic Interaction of High-Speed Train and Railway Structure Including Derailment During an Earthquake

Tanabe, Makoto; Sogabe, Masamichi; Wakui, Hajime; Matsumoto, Nobuyuki; Tanabe, Y.

doi:10.1115/1.4030829

Cited by 23 publications

(8 citation statements)

References 15 publications

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“…In this experiment the vehicle-rail coupling was achieved by assuming the same horizontal and vertical degrees of freedom for the wheel and the track. This approach provided sufficient test accuracy and also increased the computational efficiency (Tanabe et al 2011(Tanabe et al , 2016Yu et al 2020Yu et al , 2021. The coupling of the two subsystems (the train subsystem and track-bridge subsystem) was accomplished by using transient analysis in ANSYS, with the following steps: ground motion was imposed while the train began to move on the bridge.…”

Section: Fig 2 Structural Properties Of the Hsr System (Dimensions In Mm)mentioning

confidence: 99%

The Influence of Trains on the Seismic Response of Simply-Supported Beam Bridges with Different Pier Heights Expressed through a Safety Factor

Jiang

Peng

et al. 2021

Preprint

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With the extension of high-speed railways to high-intensity earthquake regions, it is impossible to avoid structural vibrations due to the joint action of trains and earthquakes. Therefore, it is of great significance to study the influence trains on bridge structures exposed to earthquakes. In this paper, a coupled finite element analysis model of a high-speed railway vehicle-bridge was established by considering a simply-supported beam bridge with the China Railway Track System (CRTS) II plate and the CRH2C high-speed train. The correctness of the model was experimentally verified. By considering the ground motion randomness, the influence of the train on the response of the bridge structure exposed to an earthquake was analyzed. Also, the influence level of the running train on the seismic response of bridge structures with different pier heights was studied. The results revealed that the train dynamic effect significantly reduced seismic responses of piers and supports, and that the effect itself decreased with the pier height increase. Furthermore, the dynamic effect of the train increased the seismic response of the track structure, while the bridge pier height had little influence on the dynamic efficiency of the track structure. For different pier heights, the probability distribution model of the train dynamic effect for the track-bridge system seismic response was considered as the normal distribution. This indicated that the seismic response of the track-bridge system under vehicle condition could be simplified as the product of the seismic response and safety factor under no vehicle condition.

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Section: Fig 2 Structural Properties Of the Hsr System (Dimensions In Mm)mentioning

confidence: 99%

The Influence of Trains on the Seismic Response of Simply-Supported Beam Bridges with Different Pier Heights Expressed through a Safety Factor

Jiang

Peng

et al. 2021

Preprint

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“…To some extent, the accuracy of rail vehicle multi-body models is mainly affected by the model of wheel-rail contact and by the models of vehicle suspension components [55,56]. This is especially true regarding the high-speed trains equipped with a lot of hydraulic dampers and freight wagons with friction elements [22,50,57,58]. However, these nonlinearities are rarely considered in the reported TBDIMs and TTBDIMs.…”

Section: Models Fully Consider the 3d Coupling Behaviour Between Railmentioning

confidence: 99%

Train–track–bridge dynamic interaction: a state-of-the-art review

Zhai

Han

Chen

et al. 2019

Vehicle System Dynamics

332

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Train-track-bridge dynamic interaction is a fundamental concern in the field of railway engineering, which plays an extremely important role in the optimal design of railway bridges, especially in high-speed railways and heavy-haul railways. This paper systematically presents a state-of-the-art review of train-track-bridge dynamic interaction. The evolution process of train-bridge dynamic interaction model is described briefly, from the simplest moving constant force model to the sophisticated train-track-bridge dynamic interaction model (TTBDIM). The modelling methodology of the key elements in the TTBDIM is systematically reviewed, including the train, the track, the bridge, the wheel-rail contact, the track-bridge interaction, the system excitation and the solution algorithm. The significance of detailed track modelling in the whole system is highlighted. The experimental research and filed test focusing on modelling validation, safety assessment and long-term performance investigation of the train-track-bridge system are briefly presented. The practical applications of train-track-bridge dynamic interaction theory are comprehensively discussed in terms of the system dynamic performance evaluation, the system safety assessment and train-induced environmental vibration and noise prediction. The guidance is provided on further improvement of the train-track-bridge dynamic interaction model and the challenging research topics in the future. ARTICLE HISTORY

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“…In some modeling cases, the length of rail, slab, and girder can be kilometers, in accordance with FE theory, the degrees of freedom (DOF) could be significantly large, which leads to huge computational burden, to further optimize the model, Zhai [17] proposed a family of explicit two-step algorithms which are convenient and economical for large-scale dynamic problems, and Zhu et al [18] proposed a new hybrid solution algorithm combined with strongly coupled method and loosely coupled method and utilized multi-time-step method to enhance the computational efficiency of TTB coupled model. Tanabe et al [19] proposed an innovative computational method which has the ability to avoid the round-off error during the calculation of the radical dynamic wheel-rail interaction under seismic excitation. ese researches above focused on the continuous creation and innovation of algorithms to improve the accuracy, stability, and computational efficiency of TTB system.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Model for Train‐Track‐Bridge‐Coupled System under Seismic Excitation

Jiang

Zhou

Liu

et al. 2021

Shock and Vibration

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When an earthquake occurs, due to the high operation speed of the train group, there is still a long distance from braking to stopping, so it needs a large number of bridge spans to calculate the integrated dynamic response, which leads to a large amount of calculation of the train-track-bridge (TTB) system under a seismic event. In order to reduce the amount of calculation, this paper proposed an efficient model called closed-loop model for simply supported railway bridge. The proposed model is realized by coupling the head and end of the rail-slab-bridge system through the utilization of pseudo-element. Simulation comparison of TTB response with and without seismic excitation between conventional TTB model and efficient model indicates that, under the premise of ensuring calculation accuracy, the efficient model shows the advantage of fewer degrees of freedom (DOF) of model and higher computational efficiency. For instance, under El Centro earthquake excitation, the time cost of proposed model is only 6% of conventional model. Meanwhile, six seismic events with different acceleration amplitudes are imposed on the efficient model, and the results of car-body acceleration, wheel-rail force, and wheel load reduction ratio are gathered and discussed; it can be concluded that, except Trinidad earthquake, for other earthquake samples investigated in this paper, with acceleration amplitude larger than 0.8 g, the train operation is at the risk of derailment.

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Exact Time Integration for Dynamic Interaction of High-Speed Train and Railway Structure Including Derailment During an Earthquake

Cited by 23 publications

References 15 publications

The Influence of Trains on the Seismic Response of Simply-Supported Beam Bridges with Different Pier Heights Expressed through a Safety Factor

The Influence of Trains on the Seismic Response of Simply-Supported Beam Bridges with Different Pier Heights Expressed through a Safety Factor

Train–track–bridge dynamic interaction: a state-of-the-art review

An Efficient Model for Train‐Track‐Bridge‐Coupled System under Seismic Excitation

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