The study of post-derailment measures to limit the extent of a derailment

Wu, Xingwen; Chi, Maoru; Gao, Huai; Zhang, Dafu; Zeng, Jing; Wu, Pingbo; Zhu, Minhao

doi:10.1177/0954409714526586

Cited by 26 publications

(20 citation statements)

References 4 publications

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“…The analysis of the factors leading to instability and derailment of railway cars has been made to ensure traffic safety [17,18]. It is well-known that the movement of trains at very high speeds (higher than 300 km/h) leads to high vibration on the railway track and its environment.…”

Section: Multiple Criteria Evaluation and The Inverse Hierarchy Modelmentioning

confidence: 99%

Multiple Criteria Evaluation and the Inverse Hierarchy Model for Justifying the Choice of Rail Transport Mode

Sivilevičius

Maskeliūnaitė

2018

PROMET

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The choice of a particular mode of transport as an alternative to another one is subjective and usually based on an individual passenger’s approach to the evaluation of advantages and disadvantages of some particular means of transport. The paper presents the methods of analysing the reasons for passengers’ choice of travelling by train as an alternative to using air transport and the results obtained in the research. The 16 criteria (sub-criteria), describing the advantages of travelling by rail over air travel, are defined. The data of the survey questionnaire filled by 52 passengers of the Vilnius–Moscow train and the ranks assigned by them to the considered criteria are described. The average ranks of all 16 criteria and their normalized subjective weights are calculated by using a new method of average rank transformation into weight (ARTIW). The average ranks assigned by the passengers of the train to sub-criteria and the calculated global weights show what criteria are most important. Using the inverse hierarchy model based on the sub-criteria weights, the most and the least important groups of criteria are determined. The institutions and companies engaged in passenger transportation by rail, which give priority to improving the services described by the most important criteria, can make this mode of transport more attractive to people.

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Section: Multiple Criteria Evaluation and The Inverse Hierarchy Modelmentioning

confidence: 99%

Multiple Criteria Evaluation and the Inverse Hierarchy Model for Justifying the Choice of Rail Transport Mode

Sivilevičius

Maskeliūnaitė

2018

PROMET

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“…Ling et al [8] built a three-dimensional dynamic model of a high-speed train coupled with a ballast track to investigate the dynamic derailment behaviours. Wu et al [9,10] proposed a post-derailment device which is similar to the L-shaped guide and validated the effect of the device in half-car derailment experiments. Based on half-car derailment experiments performed at a low speed, the device can prevent further lateral displacement during a derailment.…”

Section: Introductionmentioning

confidence: 97%

Study of the post-derailment safety measures on low-speed derailment tests

Guo

Wang

Lin

et al. 2016

Vehicle System Dynamics

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Prevention of train from derailment is the most important issue for the railway system. Keeping derailed vehicle close to the track centreline is beneficial to minimise the severe consequences associated with derailments. In this paper, the post-derailment safety measures are studied based on low-speed derailment tests. Post-derailment devices can prevent deviation of the train from the rail by catching the rail, and they are mounted under the axle box. Considering the different structures of vehicles, both trailer and motor vehicles are equipped with the safety device and then separately used in lowspeed derailment tests. In derailment tests, two kinds of track, namely the CRTS-I slab ballastless track and the CRTS-II bi-block sleeper ballastless track, are adopted to investigate the effect of the track types on the derailment. In addition, the derailment speed and the weight of the derailed vehicle are also taken into account in derailment tests. The test results indicate that the post-derailment movement of the vehicle includes running and bounce. Reducing the derailment speed and increasing the weight of the head of the train are helpful to reduce the possibility for derailments. For the CRTS-I slab ballastless track, the safety device can prevent trailer vehicles from deviating from the track centreline. The gearbox plays an important role in controlling the lateral displacement of motor vehicle after a derailment while the safety device contributes less to keep derailed motor vehicles on the track centreline. The lateral distance between the safety device and rails should be larger than 181.5 mm for protecting the fasteners system. And for the CRTS-II bi-block sleeper ballastless track, it helps to decrease the post-derailment distance due to the longitudinal impacts with sleepers. It can also restrict the lateral movement of derailed vehicle due to the high shoulders. The results suggest that, CRTS-II bi-block sleeper ballastless track should be widely used in derailment prone areas. ARTICLE HISTORY

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“…Researchers in Sweden [9,10] analyzed the post-derailment behavior of the wheel of a derailed train colliding with a concrete railroad sleeper. Some researchers in China [11][12][13] investigated the post-derailment dynamic behavior of a railway vehicle under earthquake excitations. Also, there have been studies simulating collision with a protective facility after the derailment of a high-speed train [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Full-Scale Train Derailment Testing and Analysis of Post-Derailment Behavior of Casting Bogie

Bae¹,

Moon

Lim

et al. 2019

Applied Sciences

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In this study, a full-scale train bogie derailment test was conducted. For this, test methodologies to describe the wheel-climbing derailment of the train bogie and to obtain accurate test data were proposed. The derailment test was performed with the casting bogie for a freight train and a Rheda 2000 concrete track. Two different derailment velocities (28.08 km/h and 55.05 km/h) were considered. From the test, it was found that humps in the concrete track affected the post-derailment behavior of the bogie when the derailment velocity was 28.08 km/h. For a higher derailment velocity (55.05 km/h), significant lateral movement of the derailed bogie was observed. This lateral movement was first controlled by wheel–rail contact, followed by contact with the containment wall. Finally, the train was returned to the track center.

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The study of post-derailment measures to limit the extent of a derailment

Cited by 26 publications

References 4 publications

Multiple Criteria Evaluation and the Inverse Hierarchy Model for Justifying the Choice of Rail Transport Mode

Multiple Criteria Evaluation and the Inverse Hierarchy Model for Justifying the Choice of Rail Transport Mode

Study of the post-derailment safety measures on low-speed derailment tests

Full-Scale Train Derailment Testing and Analysis of Post-Derailment Behavior of Casting Bogie

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