山地城市市郊铁路连续长大陡坡设计方案
张文正1蔡涵哲2朱礼佳1
Design Scheme for Continuous Long-large Steep Slopes in Suburban Railways of Mountainous Cities
ZHANG Wenzheng1CAI Hanzhe2ZHU Lijia1
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作者信息:1.上海市政工程设计研究总院(集团)有限公司，200092，上海
2.广州地铁设计研究院股份有限公司，510010，广州
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Affiliation:1.Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., 200092, Shanghai, China
2.Guangzhou Metro Design & Research Institute Co., Ltd., 510010, Guangzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.08.007
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中图分类号/CLCN:U212.34∶U239.5
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栏目/Col:研究报告
摘要:
［目的］山地城市市郊铁路采用长大陡坡可以有效减少线路长度，降低工程投资，然而设置长大陡坡对列车运行不利，影响列车运营安全。为解决连续长大陡坡的技术难题，满足线路能力、运行间隔及行车速度等行车要求，应对山地城市市郊铁路长大连续陡坡设计方案进行研究。［方法］以市郊铁路重庆中心城区至南川线东温泉站—黎香湖站区间线路纵断面设计为工程背景，通过仿真模拟对列车在坡道上的牵引和制动性能、列车救援能力及闸瓦热容量等进行检算，并从车辆性能、行车间隔、运营列车救援措施及列车运营安全保障等方面提出相应措施。［结果及结论］山地城市市郊铁路连续长大陡坡线路纵断面采用连续陡坡+缓坡，即“坡度为35‰、长度为1000m的线路+坡度为18.6‰、长度为250m的线路”的组合形式，可以满足列车牵引起动、故障运行、坡道制动及列车救援等行车要求，从而确保列车运营安全。
Abstracts:
［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.
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