| 既有PC斜拉桥合龙段拆除的施工控制 |
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| 引用本文： | 李宏江,李万恒,张劲泉,王江,王荣石.既有PC斜拉桥合龙段拆除的施工控制[J].公路交通科技,2008,25(8). |
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| 作者姓名： | 李宏江 李万恒 张劲泉 王江 王荣石 |
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| 作者单位： | 1. 交通部公路科学研究院,北京,100088
2. 天津市政公路管理局,天津,300170 |
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| 基金项目： | 交通部西部交通建设科技项目 |
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| 摘 要： | 以永和斜拉桥合龙段维修工程为背景,介绍了合龙段拆除的施工方法,依据合龙段拆除引起的结构性能变化的计算分析,提出了合龙段拆除的施工控制目标和结构安全防控措施,阐述了施工监测的主要内容。施工监测结果表明,合龙段拆除过程中的施工控制达到了预期目标,保证了结构的安全,为既有PC斜拉桥合龙段的维修加固提供了切实可行的技术途径。
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| 关 键 词： | 桥梁工程 PC斜拉桥 置换加固 合龙段 拆除 施工控制 |
Construction Control for Removal of the Closure Segment in an Existing Prestressed Concrete Cable-stayed Bridge |
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| LI Hong-jiang,LI Wan-heng,ZHANG Jin-quan,WANG Jiang,WANG Rong-shi.Construction Control for Removal of the Closure Segment in an Existing Prestressed Concrete Cable-stayed Bridge[J].Journal of Highway and Transportation Research and Development,2008,25(8). |
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| Authors: | LI Hong-jiang LI Wan-heng ZHANG Jin-quan WANG Jiang WANG Rong-shi |
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| Abstract: | Based upon Yonghe Cable-stayed Bridge,the construction of removal of old closure segment was presented.According to the computational analysis of structural behavior changes induced by removal of old closure segment,construction control targets,safety measures and monitoring instruments were presented.Construction monitoring results show that the established construction control targets are satisfied and structural safety measures during removal of old closure segment are reasonable.This strengthening method provides a new way for the maintenance of existing prestressed concrete cable-stayed bridge. |
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| Keywords: | bridge engineering prestressed concrete cable-stayed bridge replacement and reinforcement closure segment removal construction control |
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