| 高速公路桥梁拼宽改造关键问题分析 |
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| 引用本文： | 方益红. 高速公路桥梁拼宽改造关键问题分析[J]. 福建建筑, 2009, 0(9): 129-131 |
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| 作者姓名： | 方益红 |
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| 作者单位： | 深圳市政工程设计研究院有限公司; |
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| 摘 要： | 结合已有研究，针对高速公路桥梁拼宽中新建桥梁（以下称“新桥”）和既有桥梁（以下称“旧桥”）连接接缝类型的选择、拼宽桥梁受力状态变化的分析、不中断交通的施工工艺等问题，进行初步地总结和分析，指出了该领域存在的问题和今后主要的研究方向，对于高速公路桥梁的拼宽改造具有一定的参考价值。
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| 关 键 词： | 桥梁拼宽 纵向接缝 收缩徐变 沉降 施工工艺 |
Analysis of key problems in bridge widening and reconstructions in expressway |
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| Fang Yihong. Analysis of key problems in bridge widening and reconstructions in expressway[J]. Fujian Architecture & Construction, 2009, 0(9): 129-131 |
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| Authors: | Fang Yihong |
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| Affiliation: | Shenzhen Municipal Engineering Design Institute Lt.Co;Shenzhen Guangdong 518035 |
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| Abstract: | In this paper,some key problems in widening and reconstruction of existing bridge in expressway were summarized and explained,such as the selection of longitudinal connection joint style,analysis of the static characteristics of the widening bridges,as well as the construction technics when the existing traffic can not be shut down.And also,the existing problems in the bridge widening area were extracted and the further research directions were also presented.This kind of study may be as the reference of ex... |
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| Keywords: | Bridge widening and reconstruction Longitudinal connection joints Shrinkage and creep Asymmetrical settlement Construction technics |
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