| 跨京山铁路钢—混凝土组合箱梁体外预应力施工技术 |
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| 引用本文： | 曲久彬.跨京山铁路钢—混凝土组合箱梁体外预应力施工技术[J].国防交通工程与技术,2010,8(2):68-70. |
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| 作者姓名： | 曲久彬 |
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| 作者单位： | 上海交通大学船舶海洋与建筑工程学院,上海,200240;中铁十九局集团一公司,辽宁,辽阳,111000 |
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| 摘 要： | 北京市五环路京山铁路立交桥采用了钢-混凝土连续梁桥体外预应力技术,该桥在设计施工中存在很多难点问题。详细介绍了工程施工采用的转向器的安装、体外索套管的安装、钢绞线下料与穿束、体外预应力索的张拉、防松装置和减振器的安装技术,对今后的类似工程有借鉴参考意义。
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| 关 键 词： | 钢-混凝土组合箱梁 体外预应力 转向器 体外索套管 防松装置 减振器 |
Externally Pre-stressing Construction Technology for Steel-concrete Composite Box Girders of the Jing-Shan Railway Bridge Across the Fifth Ring Road |
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| Qu Jiubin.Externally Pre-stressing Construction Technology for Steel-concrete Composite Box Girders of the Jing-Shan Railway Bridge Across the Fifth Ring Road[J].Traffic Engineering and Technology for National Defence,2010,8(2):68-70. |
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| Authors: | Qu Jiubin |
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| Institution: | Qu Jiubin (I. Shipping, Marine and Architectural Engineering College of Shanghai Jiaotong University,Shanghai 200240,China; 2. First Engineering Co. Ltd. , 19th Bureau Group, Railway Building Corporation of China,Liaoyang 111000,China) |
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| Abstract: | The Jing-Shan Railway Flyover across the Fifth Ring Road of Beijing uses the external pre-stressing technology for the steel-concrete composite continuous beam bridge, in which case many problems arise from the design and construction of the bridge. The external pre-stressing construction design and construction technology for the steel-concrete composite continuous box girder are described in detail in the paper, which includes how to fix the steering device, how to fix the pipe sleeves for external pre-stressing bars, how to prepare the steel bars, and how to thread them,how to stretch the external steel bars, and how to fix check devices and shock dampers, and which may serve as a useful reference for similar projects in the future. |
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| Keywords: | steel-concrete composite box girder external pre-stressing steering device pipe sleeve for external pre-stressing bars check device shock damper |
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