| 预应力混凝土箱梁锚固端裂缝成因分析及处理 |
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| 引用本文： | 李强,姜早龙,李慧民.预应力混凝土箱梁锚固端裂缝成因分析及处理[J].中南公路工程,2013(2):133-136. |
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| 作者姓名： | 李强 姜早龙 李慧民 |
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| 作者单位： | [1]西安建筑科技大学土木工程学院,陕西西安710055 [2]住房和城乡建设部执业资格注册中心,北京100037 [3]湖南大学土木工程学院,湖南长沙410082 |
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| 摘 要： | 介绍某大桥预应力混凝土箱梁施工过程中，预应力束张拉后锚固端出现的开裂现象；采用有限元法计算开裂部位的应力场，应力计算的基础上分析裂缝产生的原因；提出防止产生此类裂缝的处理措施。
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| 关 键 词： | 预应力混凝土 箱梁 锚固区 混凝土裂缝 |
Cause Analysis and Treatment of Cracks at Anchorage End of Prestressed Concrete Box Girder |
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| LI Qiang,JIANG Zaolong,LI Huimin.Cause Analysis and Treatment of Cracks at Anchorage End of Prestressed Concrete Box Girder[J].Central South Highway Engineering,2013(2):133-136. |
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| Authors: | LI Qiang JIANG Zaolong LI Huimin |
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| Institution: | 1. College of Civil Engineering, Xi＇ an Univ. of Architecture ＆ Technology, Xi＇ an, Shanxi 710055, China ; 2. Practice Qualification Registration Center, Ministry of Housing ＆ Urban-Rural Development , Beijing 100037, China; 3. College of Civil Engineering, Hunan Univ. , Changsha, Hunan 410082, China) |
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| Abstract: | In this paper, the cracks at the anchorage end of a prestressed concrete box girder, ari- sing after the prestressing tendons are tensioned in the construction of a bridge, is described firstly. Then the stress field of the cracking region is computed by Finite Element Method and the cause of cracking is analyzed based on the stress computation. Finally, the treating measures to prevent such cracks from ari- sing are presented. |
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| Keywords: | prestressed concrete box girder anchorage region crack of concrete |
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