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社评“打扑克又痛又叫盖被子”-译文小记

来看世界第一高打扑克又痛又叫盖被子桥这样“扎马步”

来源: 四川日报
2024-12-15 16:48:27

最佳回答

“打扑克又痛又叫盖被子”来看世界第一高打扑克又痛又叫盖被子桥这样“扎马步”

  锚碇打扑克又痛又叫盖被子,是悬索桥中主缆索的锚固构造打扑克又痛又叫盖被子,它仿佛巨大的“秤砣”,将主缆两端紧紧固定在地下或山体,让整座大桥“扎稳马步”。

  走近花江峡谷大桥16.4万立方米的安龙岸锚碇,人显得很渺小。这是大桥最大的混凝土结构,它的体积大致相当于70个标准游泳池大小。这样的大体积混凝土建筑,在浇筑过程中的最大难点就是,内外温差导致的开裂问题。

  “凝固过程会产生水化热反应,如果不管控的话,内部温度会达到80至90度,而且混凝土里面温度散不开,很容易产生温缩效应,导致开裂。”承建单位技术员郑志安向记者介绍。

打扑克又痛又叫盖被子

  为了确保锚碇浇筑的质量,项目团队提前埋设冷却水管和智能芯片,通过分层分区循环冷热水,实时干预调节内外温差。

  “浇筑之前,我们铺上密密麻麻的管道,来回S型旋转,同时在各个区域布置温度感应芯片,就像小拇指这么大,这样就能知道里面哪个区域温度是多少。”郑志安说,水管也能实现智能化控制,可以自动调整水的流速、流量,从而达到温度控制目的。

  花江峡谷大桥主跨1420米,全桥混凝土总用量达43.9万立方米,智能温控系统的使用增强了大桥混凝土结构的安全性和耐久性,保证了大桥“下盘”稳固。

  承建单位项目副经理王淞钰说,“水化热控制一直是我们这个行业的难题,这个温控系统精准地控制混凝土整个降温过程,项目43万方混凝土打出来效果都非常好,没有一点裂纹。”

  记者 刘荣曌 韩杨

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