Design Scheme for Continuous Long-large Steep Slopes in Suburban Railways of Mountainous Cities
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 8
Abstract
Objective In mountainous cities, setting up long-large steep slopes in suburban railways can effectively reduce route lengths and lower construction costs. However, this setup poses challenges for train operation, disturbing train operational safety. To address the technical difficulties caused by continuous long-large steep slopes, and to meet requirements for line capacity, departure intervals, and train speed, it is necessary to study the design scheme for such slopes in suburban railways of mountainous cities. Method Using the longitudinal profile design of the suburban railway line from Chongqing city center to Nanchuan Line Dongwenquan Station-Lixianghu Station Interval as the engineering background, simulations are conducted for checking the calculation of train traction and braking performance on slopes, rescue capability, and brake shoe thermal capacity. Corresponding measures are proposed from various aspects, including vehicle performance, departure intervals, rescue measures for operating trains, and train operational safety guarantee. Result & Conclusion The longitudinal profile of suburban railway continuous long-large steep slopes of s in mountainous cities adopts a combination of continuous steep slopes and gentle slopes, namely a combination of ′a slope with 35‰ gradient for 1 000 m track and a slope with 18.6‰ gradient for 250 meter track′. This design can meet the requirements for train traction start-up, fault operation, slope braking, and rescue operations, thereby ensuring train operational safety.
Authors and Affiliations
Wenzheng ZHANG, Hanzhe CAI, Lijia ZHU
Keywords
Related Articles
- EP ID EP742678
- DOI 10.16037/j.1007-869x.2024.08.007
- Views 25
- Downloads 0
Smart Crew Integrated Service System for Urban Rail Transit
[Objective] To shift crew management from manual mode to smart mode, realize functions including intelligent scheduling, automatic dispatching, and improve management efficiency, a smart crew integrated service system su...
Automatic Identification and Early-warning System for On-board Rail Corrugation Based on Image Processing Technology
[Objective] Current daily metro track inspections, including manual detection and track inspection vehicle method, suffer from issues such as low efficiency and high costs, failing to meet the increasing demands for rail...
Impact Analysis of New Shield Tunnel Under-passing Construction on Existing Railways
［Objective］ The construction of new shield tunnels under-passing existing railway can cause deformation of the former railway subgrade. To ensure the stability and safety of the existing railway, appropriate reinforcem...
Construction Scheme with Non-stop Aviation for Large-diameter Shield Tunnel Crossing Airport Flight Zone in Karst Area
[Objective] To achieve non-stop aviation during the construction of a large-diameter shield tunnel crossing the airport flight zone in karst area, it is essential to study the construction scheme with non-stop aviation....
Construction of Urban Rail Transit Line Spatial Digital Base Using 3D Laser Point Cloud Technology
Objective In order to facilitate the digital transformation and high-quality development of Shanghai rail transit, it is imperative to construct a digital twin model and create a unified, authoritative, and precise spati...