| 某32m预应力混凝土箱形简支梁施工中裂缝产生的原因及控制 |
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| 引用本文： | 吴利清.某32m预应力混凝土箱形简支梁施工中裂缝产生的原因及控制[J].桥梁建设,2006(A01):98-100. |
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| 作者姓名： | 吴利清 |
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| 作者单位： | 中铁八局集团成都桥梁工厂,四川成都610300 |
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| 摘 要： | 分析了混凝土结构物在施工过程中产生裂缝的主要原因，提出了在混凝土施工过程中防止、减少混凝土结构物产生裂缝的控制原则，并具体分析了某32m预应力混凝土箱形简支梁裂缝产生的原因及控制措施，对保证该混凝土结构达到设计要求的耐久性有重要意义。
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| 关 键 词： | 混凝土结构 裂缝 耐久性 温度收缩 |
| 文章编号： | 1003-4722（2006）S1-0098-03 |
| 收稿时间： | 2006-04-17 |
| 修稿时间： | 2006-04-17 |
Causes and Control of Cracks in a 32-m Span Simply-Supported Prestressed Concrete Box Girder at Construction Stage |
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| WU Li-qing.Causes and Control of Cracks in a 32-m Span Simply-Supported Prestressed Concrete Box Girder at Construction Stage[J].Bridge Construction,2006(A01):98-100. |
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| Authors: | WU Li-qing |
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| Institution: | Chcngdu Bridge Plant, the 8th Engineering Group Co., Ltd. of China Railways, Chengdu 610300, China |
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| Abstract: | The principal causes leading to the cracks in concrete structures at construction stage are analyzed, the control principles of preventing and reducing the cracks in the structures in course of construction are put forward, and specifically the causes and control measures of the cracks in a certain 32-m span simply-supported prestressed concrete box girder are analyzed as well. The analysis and control measures herewith are of important significance to ensuring the durability of the concrete girder structure as required in design. |
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| Keywords: | concrete structure crack durability temperature shrinkage |
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