| 郑州黄河公铁两用桥施工控制关键技术研究 |
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| 引用本文： | 孙英杰,肖海珠,徐伟.郑州黄河公铁两用桥施工控制关键技术研究[J].桥梁建设,2011(2). |
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| 作者姓名： | 孙英杰 肖海珠 徐伟 |
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| 作者单位： | 中铁大桥勘测设计院有限公司,湖北武汉,430056 |
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| 摘 要： | 郑州黄河公铁两用桥是斜边桁无竖杆的三主桁、单索面多塔斜拉桥,为了使该桥建成后达到设计目标受力状态,对其施工全过程进行控制,钢梁顶推过程中以最大悬臂状态关键杆件内力控制为主、线形控制为辅;顶推到位后以预制桥面板抄垫高程和索力控制为重点。建立板梁索相结合的空间模型模拟施工过程,根据计算结果确定施工临时平联布设方案,并实现顶推过程平面中线控制、顶推完成后墩顶3桁高差调整、桥面板高差控制、斜拉索张拉控制,确保各施工阶段的杆件内力、斜拉索索力和主梁线形3项指标均达到设计要求。
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| 关 键 词： | 公路铁路两用桥 斜拉桥 结合梁 桁架 顶推法架桥 施工控制 |
Research of Key Techniques for Construction Control of Zhengzhou Huanghe River Rail-cum-Road Bridge |
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| SUN Ying-jie,XIAO Hai-zhu,XU Wei.Research of Key Techniques for Construction Control of Zhengzhou Huanghe River Rail-cum-Road Bridge[J].Bridge Construction,2011(2). |
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| Authors: | SUN Ying-jie XIAO Hai-zhu XU Wei |
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| Institution: | SUN Ying-jie,XIAO Hai-zhu,XU Wei(China Railway Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430056,China) |
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| Abstract: | Zhengzhou Huanghe River Rail-cum-Road Bridge is a single-cable-plane and multi-pylon cable-stayed bridge having three main trusses without vertical members and with two inclined side trusses.To ensure that the completed bridge of the bridge could meet the design target force conditions,the whole construction process of the bridge was controlled.In the process of incremental launching of the steel truss girder,the internal force in the critical members of the girder in the state of the maximum cantilever was... |
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| Keywords: | rail-cum-road bridge cable-stayed bridge composite girder truss incremental launching erection construction control |
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