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单词 Railroad tie
释义

Railroad tie

原声例句
科学大揭秘

More specifically, the track ballast constitutes the trackbed upon which sleepers or railroad ties are laid.

更具体地说,轨道道砟构成铺设枕木或枕木的轨道床。

科学大揭秘

As you may have seen, these stones are packed below, between and around the railroad ties.

如你所见,这些石头被堆积在铁路枕木下面和周围。

中文百科

枕木

铁轨枕木
北韩的枕木维修队

枕木亦称轨枕路枕,是铁路路轨的组成部份之一,与路轨底部直接连接,能够稳定路轨的位置,以防止路轨在列车驶过时移位引起危险,也可将列车经过时所产生的压力,平均分布在于道碴之上,使列车行驶得更稳定。

昔日的铁路多数以木材作为枕木,因而得名。材料一般采用柚木,取其坚固耐用,并有天然防蛀物质,但由于供应稀少,现多以寿命约10年的软身柏木代替。近年的铁路开始改用一种名为「预应力钢筋混凝土枕」的混凝土枕,当中的「预应力」指预先施加与受力方向相反的拉力,可以更有效承受列车行驶时所产生的压力,而采用混凝土除了更为坚固,也可避免腐蚀的问题,延长其寿命。除了混凝土枕以外,也有重量较轻的玻璃纤维及塑胶材质枕木。

英语百科

Railroad tie 枕木

Wooden ties are used on many traditional railways. In the background is a track with concrete ties.
Stone block from the Kilmarnock and Troon Railway.
A variant fastening of rails to wooden ties
Concrete ties on the BNSF line north of Yakima, Washington

A railroad tie/railway tie/crosstie (North America), or railway sleeper (UK and Australasia) is a rectangular support for the rails in railroad tracks. Generally laid perpendicular to the rails, ties transfer loads to the track ballast and subgrade, hold the rails upright and keep them spaced to the correct gauge.

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