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社评“cekc”-梳理天下新闻

狮子洋大桥东锚碇cekc填芯施工完成

来源: 郑州日报
2024-12-20 20:43:46

最佳回答

“cekc”狮子洋大桥东锚碇cekc填芯施工完成

  中新cekc网广州12月20日电 (蔡敏婕cekc 岳路建)随着最后一车混凝土注入,项目关键性控制工程——狮子洋大桥东锚碇填芯施工20日完成。

  锚碇作为固定悬索桥主缆端头、防止其位移的巨大构件,对桥梁安全至为关键。这一关键节点取得突破,为锚碇后续的顶板施工奠定了坚实基础。

  狮子洋通道项目由广东湾区交通建设投资有限公司建设管理。其中,主桥狮子洋大桥设置东西两个锚碇,东锚碇由保利长大承建。

狮子洋大桥东锚碇正在进行填芯浇筑。雷健 摄

  狮子洋大桥东锚碇采用独特的圆形重力式设计,其基础填芯总高度为21.5米。自今年7月8日填芯施工开始,共历时164天,项目建设团队完成东锚碇浇筑混凝土19.2万立方米,合计填芯47.6万吨。

  在大体积混凝土施工中,温度控制是至关重要的一环。由于混凝土在浇筑和硬化过程中会释放大量的水化热,若不及时有效地进行温度管理,极易导致混凝土内部温度过高,进而引发温度应力,造成温度裂缝的产生。

  “如何有效控制东锚碇大体积混凝土施工中的温度,成为填芯施工前亟待解决的技术难题。为做好填芯温控工作,项目在东锚碇填芯施工中采用了先进的智能化一体化温控技术。通过密布的冷却水管网络和自动温控系统,实现了对混凝土温度的精准实时监测与动态调控。”保利长大狮子洋通道T9合同段项目副经理陆梓生介绍。

狮子洋大桥东锚碇完成全部浇筑。雷健 摄

  通过智能化一体化温控技术,项目建设团队解决了大体积混凝土施工中的温度控制难题,确保了混凝土内部温度始终处于安全范围内,有效防止了温度裂缝的产生,极大地提升了混凝土结构的整体质量。

  为打造平安百年品质工程,狮子洋通道项目对耐久性提出了严苛的要求。在东锚碇施工过程中,项目建设团队巧妙地在地连墙、内衬及底板、填芯、锚固系统施工中构建四道防线,确保工程的耐久性和可靠性。

  狮子洋大桥作为项目控制性工程,采用主跨2180米双层钢桁悬索桥的方案“一跨过江”,是目前世界上技术难度最大、建造工艺最为复杂的桥梁之一,建成后将创造双层悬索桥“主跨跨径、车道数量、主塔塔高、锚碇基础、主缆规模”五项世界第一。

  随着东锚碇填芯施工的顺利完成,12月底,由中交二公局承建的西锚碇也即将完成最后一层填芯施工。两个巨型锚碇填芯的顺利完成,标志狮子洋通道建设进入了新的阶段。

  狮子洋通道是继港珠澳大桥、深中通道后粤港澳大湾区又一超级工程,建成后将为珠江口东西两岸融合发展开辟新的重要通道,对推进大湾区珠江口一体化高质量发展、打造环珠江口100公里“黄金内湾”具有重要意义。(完)

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