Metro Train Derailment Protection Device Scheme
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 1
Abstract
[Objective] Under unpredictable complex conditions such as natural disasters, failures of vehicle/track key components, or external impacts, metro train derailment is still highly prone to occurrence. Therefore, research on train passive derailment protection device schemes is essential. [Method] A dynamics nonlinear simulation model of metro train multi-body system is established. The typical shapes of both the wheel tread and the steel rail are matched. Based on the characteristics of metro train operating routes, three schemes for metro train derailment protection devices are proposed, and the derailment condition for each scheme is simulated under low-speed operating conditions. Regarding the simulation results, the effectiveness of preventing secondary rail climbing/derailment, the strength of the installation position, and the damage to vehicle caused by collision between rail and derailment protection device after derailment are taking into consideration comprehensively, a scheme of installing lateral anti-derailment stops at framework lower end as the derailment protection device is proposed. A dynamics simulation analysis is conducted on the metro train derailment protection device and the result is compared with the non-protection device working condition. [Result & Conclusion] The metro train derailment protection device exhibits a significant anti-derailment effect with certain feasibility. The dynamic envelope of the above device meets the clearance requirements of the metro line and does not affect train normal operation, making it suitable for engineering applications.
Authors and Affiliations
Yanwen LIU, Haijian XIAO
Keywords
Related Articles
- EP ID EP727704
- DOI 10.16037/j.1007-869x.2024.01.021
- Views 46
- Downloads 0
Key Technology and Application Effect of High Precision Prefabricated Track for Urban Rail Transit
[Objective] In order to thoroughly implement the national strategy of building China with a strong transportation network and the low-carbon assembly and construction concepts such as standardization, intelligence and re...
Automatic Protection Scheme Analysis for Fully Automatic Operation Line Section Evacuation
Objective There are no train crew on the train that runs on the fully automatic operation (FAO) line of urban rail transit, leading to very big safety risks in the evacuation scenario. Therefore, it is necessary to study...
Research on the Power Supply Scheme for LTE Remote Equipment on Urban Rapid Transit Lines Based on DC Remote Power Supply Technology
Objective With regard to the equipment power supply demand for long-distance section of urban rapid transit lines, the traditional point-to-point and cross-redundant power supply method for remote equipment in urban rail...
Impact Analysis of Road and Parking Lot Congestion on Urban Rail Transit Modal Share
［Objective］ To determine the optimal metrics indicators for measuring parking lot congestion and road congestion levels, it is essential to study their impact on the modal share of urban rail transit. ［Method］ Eight...
Active Protection Technology of Depot Automatic Zones in Urban Rail Transit FAO Vehicle Base
[Objective] Setting up underpass or overpass in front or inside the urban rail transit depot for personnel's access to the automatic zone requires large project investment, being prone to affect personnel evacuation and...