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1.前言 毫无疑问,无缝线路的优点在于通过废除成为轨道最大弱点的接头,减少轨道与机车车辆的损伤,大大减少维修量的同时,减少噪声与振动,亦可提高车辆的乘坐舒适度。无缝线路的这些优点为世界各国所广泛认识并尽量采用,已成为世界趋势。日本于1937年在仙山线试铺,经多项研究后,于1953年开始正式铺设。 到1985年,日本铺设无缝线路延长,既有线超过5000km,包括新干线在内约8500km。就既有线而言,它占正线轨道延长的20％弱,仅从数字看在世界铁路先进国家中未岂见名列前茅。原因之一是铺设无缝线路受各种条件的制约,但事实上今后仍大有推
1. INTRODUCTION There is no doubt that the advantage of CWR lies in reducing the damage to track and rolling stock by abolishing the joints which become the biggest weakness of the track, reducing the amount of maintenance greatly, reducing noise and vibration and improving ride comfort degree. These advantages of CWR are widely recognized and adopted by all countries in the world and have become a worldwide trend. Japan in 1937 in Anshan line shop, after a number of studies, in 1953 began the formal laying. By 1985, Japan laid a seamless line to extend the existing line of more than 5000km, including about 8500km including the Shinkansen. As far as existing lines are concerned, it accounts for only 20% of the extension of the normal orbit. Weak figures are among the best in the advanced countries in the world in terms of numbers. One of the reasons is that the laying of a seamless line is subject to various conditions, but in fact there is still a lot of push in the future