| 悬索桥主索鞍可控状态自由滑移控制 |
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| 引用本文： | 孙胜江,王雷刚.悬索桥主索鞍可控状态自由滑移控制[J].桥梁建设,2010(1). |
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| 作者姓名： | 孙胜江 王雷刚 |
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| 作者单位： | 1. 长安大学桥梁与隧道陕西省重点实验室,陕西,西安,710064
2. 华北高速公路股份有限公司,北京,100176 |
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| 摘 要： | 基于主索鞍偏量的分阶段多次顶推控制方式存在实施难的问题,提出主索鞍可控状态下自由滑移控制方法,即主索鞍在加劲梁吊装和二期恒载施工过程中可自由滑移,阐述该控制方法的步骤及优点。以沪蓉西国道湖北段四渡河大桥为工程背景,由实测桥塔偏位及主索鞍滑移量得出其变化规律,由实测桥塔偏位和索鞍偏量与理论计算的索鞍偏量之间的关系,说明可以按照主索鞍相对于索鞍初始位置的绝对距离等于索鞍累计滑移量与桥塔偏位之和对主索鞍滑移进行控制分析。实践表明该方法控制效果良好。
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| 关 键 词： | 悬索桥 主索鞍 自由滑移 桥塔偏位 |
Controllable State Control of Free Movement of Tower Saddle of Suspension Bridge |
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| SUN Sheng-jiang,WANG Lei-gang.Controllable State Control of Free Movement of Tower Saddle of Suspension Bridge[J].Bridge Construction,2010(1). |
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| Authors: | SUN Sheng-jiang WANG Lei-gang |
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| Institution: | SUN+Sheng-jiang1,WANG+Lei-gang2(1.Key+Laboratory+for+Bridges+,+Tunnels+of+Shanxi+Province,Chang%e2%80%b2an+University,Xi%e2%80%b2an+710064,China,2.Huabei+Expressway+Co.,Ltd.,Beijing+100176,China) |
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| Abstract: | In consideration of the difficulty in implement of the control method for offsetting of the tower saddle of a suspension bridge that is pushed in multiple times in stages,a controllable state control method for free movement of the tower saddle is proposed,that is,the tower saddle is allowed to freely move in the controllable state during the erection of the stiffening main girder and in the process of construction of the second phase dead load and the specific steps and advantages of the control method are... |
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| Keywords: | suspension bridge tower saddle free movement tower displacement |
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