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引言当双线铁路运输量饱和时,怎么办?方法当然很多。意大利在最近几十年中花费了大量资金,不断进行大规模既有线改造,其目的不外是提高运量和节约行车时间。本文介绍罗马至佛罗伦萨约300km 长的双线铁路改造修建成四线的情况。新建双线铁路与既有线双线铁路密切联系,标准较高,不但能行驶高速列车,而且节省了既有线的让车时间,提高了既有线的通过能力。那不勒斯一米兰铁路干线,长846km(约占意大利铁路网长度的5.3％),承担的运输量超过全部铁路运量的30％。罗马—佛罗伦萨为该干线的中段,系双线,长314km,与许多重要的国
INTRODUCTION WHAT DOES WHAT IF THE TWO-RAY RAILWAY IS STIFFENED? There are certainly many ways to do this. In recent decades, Italy has spent a large sum of money to continuously carry out large-scale reconstruction of existing lines, with the aim of increasing its capacity and saving travel time. This article describes the reconstruction of a four-lane, two-lane railway from Rome to Florence about 300 km long. The newly built two-lane railway is closely linked with the existing two-lane railway. The higher the standard, the higher the speed of trains, the saving of the existing lane and the increase of the passing capacity of the existing lane. The Naples-Milan Railway, 846km long (about 5.3% of the length of the Italian railway network), carries more than 30% of the total railway traffic. Rome - Florence is the middle of the trunk line, a double line, 314km long, with many important countries