| 多跨连续箱梁悬臂施工监控技术 |
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| 引用本文： | 杜伟.多跨连续箱梁悬臂施工监控技术[J].铁道建筑技术,2014(11):19-21. |
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| 作者姓名： | 杜伟 |
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| 作者单位： | 中铁二十四局集团有限公司 上海 200071 |
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| 摘 要： | 通过金温扩能改造工程一联多跨连续梁悬臂施工的实践,阐述各阶段施工工况,采用Midas/Civil软件建立有限元模型,检算主梁内力和挠度,计算箱梁预拱度,确定立模标高,并提出支座预偏量设置及临时固结方法。总结的监控方法可保证连续梁悬臂施工安全,成桥线形能满足设计及验标要求。
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| 关 键 词： | 多跨连续梁 悬臂 线形监控 |
Monitoring Technology of Multi-span Continuous Box Girder Cantilever Construction |
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| Du Wei.Monitoring Technology of Multi-span Continuous Box Girder Cantilever Construction[J].Railway Construction Technology,2014(11):19-21. |
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| Authors: | Du Wei |
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| Institution: | Du Wei ( China Railway 24^th Bureau Group Co. Ltd. , Shanghai 200071, China) |
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| Abstract: | Through the practice of a multi span continuous beam cantilever construction at the expansion project of Jinhua-Wenzhou,the paper expounds the construction condition of various stages.The finite element model is established with Mi-das/Civil software to check and calculate the internal force and deflection of main beam,calculate the pre-camber of box girder,determine the formwork elevation,and put forward the bearing pre-offset setting and temporary consolidation meth-od.The monitoring methods got through the study can ensure the safety of continuous beam cantilever construction,and the linetype of bridge can satisfy the design and standard requirements. |
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| Keywords: | multi-span continuous beam cantilever line shape monitoring |
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