Experimental validation of effect on reducing the severity of injury to rail passengers occupying longitudinal seats using handrails in the event of collision

Autor: Kazuma NAKAI, Shota ENAMI
Jazyk: japonština
Rok vydání: 2019
Předmět:
Zdroj: Nihon Kikai Gakkai ronbunshu, Vol 85, Iss 878, Pp 19-00093-19-00093 (2019)
Druh dokumentu: article
ISSN: 2187-9761
DOI: 10.1299/transjsme.19-00093
Popis: In the unlikely event of a train collision, the on-board safety features play a critical role in protecting the passengers. The UK’s Railway Safety and Standards Board has established a Railway Group Standard GM/RT2100 (RGS) to develop a crashworthy structural design of interior fittings, and this standard is considered to be one of the most advanced specifications of its type. This standard provides a sled test method to evaluate the injury that is caused to passengers who are seated in a transverse seating arrangement. However, there is no standard to evaluate the injury that is caused to passengers occupying longitudinal seats. Commuter trains in some big cities in Japan mostly depict longitudinal seating arrangements, which is similar to that observed in some metro trains in European countries. A previous study observed that handrails exhibit an ability to reduce the secondary impact velocity of the passenger’s head to interior fittings, and this was ascertained in case studies through numerical simulations. The purpose of this study is to estimate the severity of injuries the occupants of longitudinal seats suffer and to investigate the effect of reducing the severity of injury to passengers using handrails in a sled test. It was found that the passengers seated on a longitudinal seat with a high risk of injuries are those seated third-furthest away from the bench-end partition and that the severity of head and thorax injury decreased significantly because of a handrail.
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