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Memory bearing: A novel solution to protect element joints from differential settlement for immersed tunnels with deep alignment

机译：记忆轴承：一种用于深埋对齐的沉浸隧道中保护单元节点免受差异沉降的新颖解决方案

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摘要

The immersed tunnel in the Hong Kong-Zhuhai-Macao Bridge (HZMB) project has a deep alignment and poor geological immersed tunnel from differential settlement, we developed a special type of bearing that can be placed between the vertical shear keys of the element joints. These bearings 'remember' the maximum capacity that the tunnel structure can undertake so that they can guide the force flow from overloads via the tunnel structure to the foundation in the most appropriate manner to protect the shear-transferring structure while fully utilising it. As of now, all the element joints of the thirty-three elements in the HZMB tunnel are being protected with the bearings installed. This paper elaborates on our concept and experiments, based on which our design and applications were carried out.
机译：港珠澳大桥（HZMB）工程的沉管隧道因深陷差异沉降而具有较深的线形和较差的地质沉管隧道，我们开发了一种特殊类型的轴承，可放置在单元节理的垂直剪力键之间。这些轴承“记住”了隧道结构可以承担的最大能力，因此它们可以以最合适的方式将来自过载的力流引导通过隧道结构到达基础，以在充分利用剪力传递结构的同时保护其。到目前为止，HZMB隧道中的33个单元的所有单元接头都已通过安装的轴承进行保护。本文详细阐述了我们的概念和实验，并在此基础上进行了设计和应用。

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  • 来源
    《Tunnelling and underground space technology》 |2019年第6期|144-155|共12页
  • 作者

    Lin Ming; Lin Wei; Yin Haiqing; Liu Xiaodong; Liu Kexin;

  • 作者单位

    China Commun Construct Co Ltd, Beijing, Peoples R China|CCCC HZMB Isl & Tunnel Project, Gen Off, Beijing, Peoples R China;

    CCCC Highway Consultant Co Ltd, Beijing, Peoples R China|CCCC HZMB Isl Tunnel Project, Design Div, Beijing, Peoples R China;

    CCCC HZMB Isl & Tunnel Project, Gen Off, Beijing, Peoples R China;

    CCCC HZMB Isl & Tunnel Project, Gen Off, Beijing, Peoples R China|CCCC Highway Consultant Co Ltd, Beijing, Peoples R China;

    CCCC HZMB Isl & Tunnel Project, Gen Off, Beijing, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Immersed tunnel; Settlement; Bearing; Joint; Hong Kong-Zhuhai-Macao Bridge; Fracture;

    机译：沉管隧道;沉降;支承;节点;港珠澳大桥;断裂;

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