| 天津永和大桥的维修与加固 |
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| 引用本文： | 李宏江,李万恒,张劲泉,王江,张永明,王荣石.天津永和大桥的维修与加固[J].世界桥梁,2009(1). |
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| 作者姓名： | 李宏江 李万恒 张劲泉 王江 张永明 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： | 介绍天津永和大桥的主要病害,并对其成因进行初步分析.其后所采取的维修加固措施主要包括合龙段置换并加固、换索及新索索力调整等关键技术环节.阐述合龙段拆除施工的控制和安全防控措施及其后的主梁线形调整的基本方法,并就线形调整的效果进行分析.给出合龙段恢复与加固的基本工序和技术要点.最后介绍换索及索力误差调整方法.施工过程中的监测结果表明,维修加固后,大桥的桥面线形得到明显改善,全桥索力较为均匀,维修加固过程中主梁混凝土未产生过大的拉应力.
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| 关 键 词： | 斜拉桥 维修加固 合龙段置换 换索 索力调整 桥面线形 |
Rehabilitation and Strengthening of Yonghe Bridge in Tianjin |
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| LI Hong-jiang,LI Wan-heng,ZHANG Jing-quan,WANG Jiang,ZHANG Yong-ming,WANG Rong-shi.Rehabilitation and Strengthening of Yonghe Bridge in Tianjin[J].World Bridges,2009(1). |
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| Authors: | LI Hong-jiang LI Wan-heng ZHANG Jing-quan WANG Jiang ZHANG Yong-ming WANG Rong-shi |
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| Institution: | 1. Research Institute of Highways;the Ministry of Communications;Beijing 100088;China;2. Ad-ministration of Municipal Engineering and Highways;Tianjin City;Tianjin 300170;China |
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| Abstract: | This paper introduces the major deteriorations of Yonghe Bridge in Tianjin and preliminarily analyzes the formation causes of the deteriorations. The rehabilitation and strengthening measures taken for the Bridge mainly include those key technical steps of replacement and strengthening of the closure segment,replacement of the cables and adjustment of cable forces of the new cables. The paper then describes the construction control and safety protection measures for removal of the closure segment and the ba... |
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| Keywords: | cable-stayed bridge rehabilitation and strengthening closure segment replacement cable replacement cable force adjustment deck geometric shape |
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