为什么火车需要铁轨

为什么火车需要铁轨呢?
2025年03月13日 23:44
有3个网友回答
网友(1):

首先,火车自重很大。一般大家乘坐的客车一列重量在一千多吨。载重只有几百吨。一般路面无法承载如此大的压力。走钢轨是为了承载它的压力。
其次,火车的车轮是铁的,如果想高速平稳的运行,就不能在水泥地面,因为水泥地面还是很粗糙,并且容易破损,柏油地面则硬度不够。
再次,因为快,火车的车轮与铁轨之间的摩擦力小,提高了火车速度。
就这几个方面了,想不到别的了。

网友(2):

因为火车很重,有了铁轨,增大了受力面积,减小了压强

网友(3):

全国的铁路网,好像让我们实现了瞬移的魔法

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