| 湘西矮寨大桥设计创新技术 |
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| 引用本文： | 胡建华,崔剑峰.湘西矮寨大桥设计创新技术[J].桥梁建设,2011(6). |
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| 作者姓名： | 胡建华 崔剑峰 |
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| 作者单位： | 1. 湖南大学土木工程学院,湖南 长沙 410082;湖南省交通规划勘察设计院,湖南 长沙 410008
2. 湖南大学土木工程学院,湖南 长沙,410082 |
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| 基金项目： | 国家西部交通建设科技项目(200631879846); 湖南省交通厅科技项目(200517) |
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| 摘 要： | 湘西矮寨大桥为塔梁分离式单跨钢桁梁悬索桥,主缆跨径布置为242 m+1 176 m+116 m,加劲梁长度为1 000.5 m.该桥设计时结合特殊的地形、地质条件,首次提出了塔梁分离式悬索桥新结构,实现了结构与环境的完美融合.采用在主缆无吊索区增设竖向岩锚吊索的方式解决了无索区过长造成的结构问题.采用高性能复合材料CFRP作为锚杆、超高性能混凝土RPC作为锚杆两端的粘结介质,形成一种高效、耐久的新型岩锚体系.针对山区大跨度悬索桥加劲梁运输与架设的难题,提出了柔性轨索滑移法架设加劲梁的新工艺.通过三维数值模拟分析,分析了施工、运营过程中结构体系与山体的稳定性问题,形成了结构与山体系统稳定新技术.
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| 关 键 词： | 悬索桥 塔梁分离 高性能复合材料 地锚 轨索滑移法 |
Innovative Techniques of Design of Aizhai Bridge in West Hunan |
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| HU Jian-hua
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CUI Jian-f eng.Innovative Techniques of Design of Aizhai Bridge in West Hunan[J].Bridge Construction,2011(6). |
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| Authors: | HU Jian-hua CUI Jian-f eng |
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| Institution: | HU Jian-hua1,2,CUI Jian-feng1(1.College of Civil Engineering,Hunan University,Changsha 410082,China,2.Hunan Provincial Transport Planning,Survey and Design Institute,Changsha 410008,China) |
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| Abstract: | The Aizhai Bridge in the West Hunan is a single span steel truss girder suspension bridge with separated towers and girder.The main cable span arrangement of the bridge is 242 m+1 176 m+116 m and the length of the stiffening girder is 1 000.5 m.In the design of the bridge,in view of the special topographic and geologic conditions at the bridge site,a new structure of suspension bridge with separated towers and girder was brought forward for the first time and the perfect mergence of the structure into the e... |
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| Keywords: | suspension bridge separated tower and girder high performance composite material ground anchorage rail cable launching method |
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