| 排调河一号特大桥中跨合龙顶推控制 |
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| 引用本文： | 许明雷,罗力军.排调河一号特大桥中跨合龙顶推控制[J].桥梁建设,2011(4). |
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| 作者姓名： | 许明雷 罗力军 |
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| 作者单位： | 1. 贵州省交通厅质监局,贵州贵阳,550004
2. 中铁大桥局集团桥科院有限公司,湖北武汉,430034 |
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| 摘 要： | 为了保证高墩大跨度三跨连续刚构桥中跨顺利合龙,需在合龙前进行水平顶推控制,以贵州排调河一号特大桥为工程背景,采用专业桥梁结构分析软件MIDAS建立有限元模型模拟施工过程,以消除墩顶水平位移为原则计算顶推力大小,并就顶推对该桥成桥状态受力性能的影响进行分析;在实际顶推过程中对位移和内力数据进行实时监测,将实测数据与理论计算值进行比较分析,其结果基本一致,表明顶推施工是合理、可靠和有效的,确保了顶推过程中结构的安全。
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| 关 键 词： | 刚构桥 合龙 顶推 有限元法 监测 |
Control of Pushing for Closure of Central Span of Paidiao River Bridge No.1 |
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| XU Ming-lei,LUO Li-jun.Control of Pushing for Closure of Central Span of Paidiao River Bridge No.1[J].Bridge Construction,2011(4). |
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| Authors: | XU Ming-lei LUO Li-jun |
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| Institution: | XU Ming-lei1,LUO Li-jun2(1.Administration of Quality and Technique Supervision,Department of Transport,Guizhou Province,Guiyang 550004,China,2.Bridge Science Research InstituteLtd.,China Railway Major Bridge Engineering Group,Wuhan 430034,China) |
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| Abstract: | To ensure the smooth closure of central span of a high-rise pier and long span three-span continuous rigid-frame bridge,the control of horizontal pushing of the central span before it is closed is necessitated.The Paidiao River Bridge No.1 in Guizhou was cited as an example,the professional analysis software MIDAS for bridge structure was used to set up the finite element model and to simulate the construction process of the bridge,the pushing forces were calculated on the principle that the pier top horizo... |
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| Keywords: | rigid-frame bridge closure pushing finite element method monitoring |
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