新闻 > 国内
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China

揭秘港珠澳大桥:所用钢铁相当于60座埃菲尔铁塔

2017-07-08 04:41:44   新华网

7月7日,港珠澳大桥海底隧道正式贯通。这也意味着全球最长的跨海大桥——港珠澳大桥实现了主体工程全线贯通。新华社图新华网广州7月7日报道,如长龙卧波,又似蛟龙跃海。7日,港珠澳大桥实现了主体工程全线贯通,一座长达55公里的钢铁大桥飞跨茫茫大海,历史性地将香港、珠海、澳门连在一起。

它使用的42万吨钢铁足够建造60座埃菲尔铁塔;它使用的108万立方米混凝土,每一粒都可以溯源;它使用的建造方式,是像积木一样一块一块搭上去的……

这座在中国交通建设史上被称为“技术最复杂”的“世纪工程”,一次次挑战着工程师的智慧和建设者的勇气。在挑战中摸索,在摸索中前行,在前行中收获“中国标准”,填补世界空白,成为中国迈入桥梁强国的里程碑。

突破:艰难环境倒逼的创新

港珠澳大桥集桥岛隧为一体,其线路需经过伶仃洋航道和香港国际机场航线。一方面既要满足30万吨级巨轮通行,另一方面又要满足航班降落限高需求。搭建深埋沉管隧道成为最佳选择。

“既有案例都是浅埋,深埋属于沉管施工‘禁区’,没有任何标准可参考。”港珠澳大桥主体工程总工程师苏权科说,隧道由33节沉管和最终接头组成,全长6.7公里,是世界上最长的外海深埋沉管隧道。

从2013年5月2日首节E1沉管开始浮运安装,到今年5月2日最终接头安装,34次“深海之吻”,大桥建设者们整整花了4年。

“由于没有经验,第一个管节的沉放时间整整持续96个小时,大家连续四天五夜没有合眼休息,眼皮‘打架’就用风油精擦在眼睑下提神。当成功的那一刻,所有人都累瘫了。”中交联合体港珠澳大桥工程岛隧项目部副总工尹海卿说。

经验的积累、技术的更新、工艺的改进,最终创造了外海沉管隧道滴水不漏的建设奇迹。“海底基床泥沙软硬不一,沉管安装上去会因沉降不一产生断裂。我们研发出挤密砂桩复合地基设计方法,整个海底基槽的总体沉降控制在10厘米以内,差异沉降控制在1厘米以内。”尹海卿说。

高空俯瞰,两座面积达20万平方米的东、西人工岛实现了桥梁和隧道的流畅转换。与传统填海造岛方案不同,港珠澳大桥选择了“钢圆筒围岛”的快速成岛方案。

上一页1/3下一页
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China

相关阅读

梁振英首次回应港珠澳桥造假事件:政府会跟进(图)

2017-05-27 15:08:56

《梦桥》——“献给港珠澳大桥伟大建设者”

2017-06-10 11:26:52

港珠澳大桥香港段复检完成 又发现20个异常样本

2017-06-22 14:48:21

港珠澳大桥海底隧道贯通 提前穿越“海底巨龙”

2017-07-07 09:54:50
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
分享到:
0 0
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China

美图推荐

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China

为您推荐

加载更多>>
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/945/20170708/30940320.html
Server: cms-9-53
Date: 2024/12/27 22:09:43

Powered by China
China