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首页> 外文会议>2011 International Conference on Remote Sensing, Environment and Transportation Engineering >Linear control of prestressed concrete continuous girder bridge constructing by cast-in-place cantilever method based on forward-analysis method
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Linear control of prestressed concrete continuous girder bridge constructing by cast-in-place cantilever method based on forward-analysis method

机译：基于前向分析法的现浇悬臂法预应力混凝土连续梁桥线性控制

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摘要

Based on forward-analysis method, the deformation of structure during each construction stage is calculated and accumulated for the request of linear control of long-span prestressed concrete continuous girder bridge constructing by cast-in-place cantilever method. Then the camber is determined considering some more factors, such as concrete shrinkage and creep, secondary permanent load, a half of static live load, etc. The points of linear control of long-span prestressed concrete continuous girder bridge are also summarized, which constructed by cast-in-place cantilever method. The line shape of whole structure was controlled well according to the result of elevation association survey before closure, the deviation is limited within the confine provided by code, which is important to the closure of bridge. This paper would provide reference value for linear control of the same type of bridges.
机译：基于正向分析方法，计算并累积在每个施工阶段期间结构的变形，用于通过流悬悬臂法构造的长跨度预应力混凝土连续梁桥的线性控制要求。然后，考虑一些因素，例如混凝土收缩和蠕变，二次永久载荷，一半的静态活载等因素确定。还总结了长跨度预应力混凝土连续梁桥的线性控制点，构建通过浇注悬臂法。根据闭合前的升高关联调查的结果控制整个结构的线形状，偏差在代码提供的限制内，这对桥的封闭是重要的。本文将为相同类型的桥梁线性控制提供参考值。

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