Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Nam-Hyoung Lim"'
Publikováno v:
Buildings, Vol 14, Iss 1, p 171 (2024)
Railway derailments present a safety hazard, carrying the potential for severe consequences for both human lives and the economy. Implementing derailment containment provisions (DCPs) near the track centerline is essential for mitigating risks in ope
Externí odkaz:
https://doaj.org/article/94317d0d74914e7fa5ebcf495e84da35
Publikováno v:
Buildings, Vol 14, Iss 1, p 77 (2023)
This study proposes a rational method for modelling ballast in tracks based on the discrete element method (DEM) approach. To simulate a ballast consisting of a group of gravels, it is essential to use the discrete element method. The ballast compris
Externí odkaz:
https://doaj.org/article/1afe7ec37e784c9782adc8e2fd44793f
Publikováno v:
Applied Sciences, Vol 13, Iss 6, p 3899 (2023)
This study proposes a theoretical method to estimate the impact force of Derailment Containment Provisions (DCPs) for the prevention of secondary collisions in the event of a train derailment. By comparing the impact forces estimated using the common
Externí odkaz:
https://doaj.org/article/37421b04d1844bf59656b9f59f716099
Publikováno v:
Applied Sciences, Vol 12, Iss 21, p 11297 (2022)
In order to reduce the large damage caused by train derailment, protective facilities of various shapes and conditions can be installed on railroad tracks. These protective facilities are referred to as derailment containment provisions (DCPs) and th
Externí odkaz:
https://doaj.org/article/99c32bd734d646398519e5f56ac8dedf
Publikováno v:
Applied Sciences, Vol 10, Iss 8, p 2717 (2020)
This study aims to suggest a rational analysis method for a track ballast–wheel interaction that could be further developed to model the interaction in a train-derailment event, based on the discrete-element method (DEM). Track ballast is filled wi
Externí odkaz:
https://doaj.org/article/7b2c0e297cb840c0b2cb201f963e7f72
Publikováno v:
Applied Sciences, Vol 10, Iss 1, p 118 (2019)
As the operating speed of a train increases, there is a growing interest in reducing damage caused by derailment and collision accidents. Since a collision with the surrounding structure after a derailment accident causes a great damage, protective f
Externí odkaz:
https://doaj.org/article/563b6fd5fd1b41f789a6b2418d6bf5dc
Publikováno v:
Advances in Civil Engineering, Vol 2018 (2018)
Fatal train accidents usually involve derailments or collisions. These derailment/collision accidents are infrequent. However, the damage due to derailment can be catastrophic. Derailment containment walls are usually used in Korea to minimize such d
Externí odkaz:
https://doaj.org/article/a51f901baf27477c83bd3b78afa96e44
Publikováno v:
Advances in Materials Science and Engineering, Vol 2017 (2017)
As structures like skyscrapers and long-span bridges become larger, the demand for higher strength of concrete is increasing. However, research on ultrahigh-strength concrete (UHSC) is still in its infancy. In particular, UHSC is known to have a cons
Externí odkaz:
https://doaj.org/article/61b3c30ee1a64944a9de2b3541f42ff3
Publikováno v:
Journal of the Korean Society of Hazard Mitigation. 22:175-180
The Sliding Track Panel (STP) System is a method for installing Continuous Welded Rail (CWR) in a long-span ballastless track bridge, such as a truss bridge. The STP system aims to reduce additional stress generated on the rail due to track-bridge in
Publikováno v:
Journal of the Korean Society of Hazard Mitigation. 22:147-151
Magnetic Barkhausen noise (MBN) can be used to potentially detect fatigue, creep, stress, and hardness in ferromagnetic materials. Recently, non-destructive measurement equipment using MBN has been developed to measure the residual stress of railway