| 钢桁架拱桥悬臂安装扣索单股一次张拉施工技术 |
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| 引用本文： | 汪存书,孙玉祥.钢桁架拱桥悬臂安装扣索单股一次张拉施工技术[J].重庆交通大学学报(自然科学版),2009,28(5):840-843,947. |
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| 作者姓名： | 汪存书 孙玉祥 |
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| 作者单位： | 中交二航局第二工程有限公司,重庆,400042 |
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| 摘 要： | 重庆朝天门长江大桥是目前世界上最大跨度的钢桁架拱桥,在悬臂安装施工期间,设两对钢绞线扣索,与主拱形成自锚平衡共同受力体系,控制主拱结构内力和变形。单根扣索使用148股钢铰线,最大拉力16 661 kN,采用单股钢绞线一次张拉成型的技术施工,其技术原理简单,施工方便,可供类似工程参考。
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| 关 键 词： | 钢桁架拱桥 悬臂安装 钢绞线扣索 单股一次张拉成型 |
One-Time Tensioning Formation Technology of Single Steel Strand Wire of Anchor Cable of Steel Cantilever Installed Truss Arch Bridge |
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| WANG Cun-shu,SUN Yu-xiang ,Chongqing ,China.One-Time Tensioning Formation Technology of Single Steel Strand Wire of Anchor Cable of Steel Cantilever Installed Truss Arch Bridge[J].Journal of Chongqing Jiaotong University,2009,28(5):840-843,947. |
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| Authors: | WANG Cun-shu SUN Yu-xiang Chongqing China |
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| Institution: | WANG Cun-shu,SUN Yu-xiang (China Communications 2nd Navigational Bureau 2nd Engineering Co.Ltd.(CSNEC),Chongqing 400042,China) |
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| Abstract: | Chongqing Chaotianmen Yangtze River Bridge is the largest-span steel truss arch bridge in the world currently.During the period of cantilever installation,two pairs steel strand cables,together with the main arch forming a self-anchor common balance working system,are set up to control the inner force and deformation of the structure of main arch.Each cable group contains148 stocks of steel hinge lines and the biggest rally is up to 16661kN.One-time tensioning formation technology of single steel strand wir... |
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| Keywords: | steel truss arch bridge cantilever installation anchor cable of steel lines one-time tensioning formation technology of single steel strand wire |
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