直线电机轨道交通系统土建工程与资源节约

我国正处在城市轨道交通建设的高潮期。然而,在城市建成区建设城市轨道交通系统的难度越来越大,工程风险和工程造价都很高。采用直线感应电机驱动的直线电机轨道交通系统具有车辆断面小、轴重轻、动力性能好、爬坡能力强、曲线半径小、噪声低、振动小、养护维修少等优点。本文结合直线电机轨道交通系统的特点,分别从线路、隧道、桥梁、轨道、车站、车辆段等方面分析其土建工程资源消耗特征,并通过与传统旋转电机驱动轨道交通系统相比较,得出直线电机轨道交通系统在土建工程方面是资源节约型的城市轨道交通系统制式的结论,非常适合大中城市中等运量城市轨道交通发展的要求。

Savings in resources and civil work for linear induction motor rail transit systems

Many cities in China are building urban rapid rail transit(URT)systems.However,the environment in built up areas is becoming more constrained and thus leads to increases in project cost and construction risk.A linear induction motor(LIM)driven rail transit system-linear metro system has many advantages,such as,smaller car cross section,light axle load,good kinetic condition,high grade capability,smaller curve radius,low noise,low vibration and simple maintenance.The civil work(line,tunnel,bridge,track,station,car depot,etc.)characteristics and resource consumption of LIM powered systems are analyzed.Based on a comparison with the conventional rotary motor metro system,the LIM powered system is proved to be a'low cost,efficient benefit'and resource-saving urban rail transit system and suitable as medium capacity urban transit for medium or large cities.