Structural Design Scheme and Performance Analysis of Urban Rail Transit No.14 Turnout
Journal Title: Urban Mass Transit - Year 2025, Vol 28, Issue 3
Abstract
［Objective］ Existing urban rail transit turnouts suffer from low lateral crossing speed, which adversely affects turn-back capacity. To enable 8-car A-type metro trains to achieve a capacity of 30 pairs per hour in the long term, it is necessary to design a turnout structure scheme that can meet high-speed crossing requirements, with a lateral crossing speed of up to 67 km/h. ［Method］ The research takes a No.14 turnout with a rail mass specification of 60 kg/m (hereinafter referred to as ′No.14 turnout′) as research object, and a structural design scheme for the No.14 turnout and its diamond crossing is proposed. Based on current relevant standards and specifications, the turnout conversion calculation theory is employed to perform switch rail conversion calculations for the proposed design scheme. A seamless turnout finite element model is established to conduct static simulation analysis for the design scheme of No.14 seamless turnout. ［Result & Conclusion］ The proposed design scheme meets the required control indicators for turnout conversion force, maximum allowable displacement, and minimum wheel flange groove width. Furthermore, the strength of the turnout rails, force transmission components, and longitudinal displacement of movable parts are all compliant with the specifications.
Authors and Affiliations
Dong FANG, Hualong ZHOU, Xiaotao WANG, Changsheng ZHOU, Yuhang LIU
Keywords
Related Articles
- EP ID EP760149
- DOI 10.16037/j.1007-869x.2025.03.029
- Views 22
- Downloads 0
Evolution Characteristics and Implications of Seoul Metropolitan Area Rail Transit
Objective The comprehensive understanding of rail transit evolution in developed metropolitan areas abroad is beneficial for the scientific construction of rail transit network and the rational scheduling of construction...
Impact of Detour Tunnels in Metro Station Track Area on Ventilation and Thermal Environment of the Line Tunnel
［Objective］ Due to the space limitation around some metro stations, the piston air shafts can not be installed outside the track area. To meet the ventilation requirements, the piston air shafts can be arranged within...
Arrangement Principles of the Busbar Interlocking Joint in Metro Rigid Overhead Catenary System
[Objective] The busbar interlocking joints of metro rigid overhead catenary system operate for extended periods within the complex coupled vibration system formed between the pantograph and the contact wire. Improper arr...
Real-Time Passenger Flow Monitoring System for Urban Rail Transit Based on Cloud Platform Architecture
［Objective］ In view of the shortcomings that the existing urban rail transit system unable meeting the requirements for passenger flow data real-time transmission, solutions for real-time passenger flow data transmissi...
Flexural Performance of Mortise-tenon Prestressed Bolt Joints in Prefabricated Station Structure
Objective The rationality of joint structures is crucial for station safety. Therefore, it is necessary to study the enhancement effect of additional prestressing measures on the flexural performance of prefabricated sta...