介绍中国大桥的说明文

介绍中国大桥的说明文
2025-03-16 17:33:16
推荐回答(1个)
回答1:

我国的公路桥梁总数约80万座,铁路桥梁总数已超过20万座。 近十几年来,我国几乎每年都在刷新世界桥梁建设的纪录, 大桥正在成为一张中国的新“名片”。 中国桥梁创造了众多的“世界第一”。
(1)桥梁数量最多。 既有像赵州桥那样的古代桥梁,还有在不断地建设的新桥。
(2)桥梁跨度最大。近十几年来,几手每年都在刷新纪录。世界十大拱桥, 十大梁桥, 十大斜拉桥, 十大悬索桥,中国分别占1/2或以上。
(3)各类桥。①,世界最长跨海大桥一 青岛跨海大桥, 全长约37Km。②世界最长高铁桥一 丹阳到昆山特大桥。全长164.85公里。③世界跨径最大钢拱桥一 朝天门长江大桥, 主跨长552米 ④世界首座公铁两用跨海大桥一平潭海峡公铁两用桥。正在建, 2019年通车 。 ⑤世界第一高悬索桥—四渡河大桥。

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