| 桥梁墩台混凝土施工防裂技术 |
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| 引用本文： | 王清江,王越,王栋.桥梁墩台混凝土施工防裂技术[J].国防交通工程与技术,2008,6(2):53-56. |
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| 作者姓名： | 王清江 王越 王栋 |
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| 作者单位： | 中铁十八局集团公司达成铁路指挥部,天津,300222 |
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| 摘 要： | 如何防止温度裂缝，是大体积混凝土结构施工中的一个重大课题。结合达成扩能改造工程铁路双线桥梁实体墩台施工实践，分析了该桥先期施工中桥墩混凝土表面出现裂缝的原因：除温度裂缝外，还由于施工工艺不当，造成混凝土离析，收缩率不同导致干缩裂缝的出现。介绍了改变混凝土原材料、调整混凝土配合比、改进施工工艺及对混凝土浇灌时进行温度控制和养生过程中采取防护保温等措施，取得了良好效果，可为类似工程施工提供借鉴。
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| 关 键 词： | 墩台 大体积混凝土 温度裂缝 干缩裂缝 混凝土离析 |
| 文章编号： | 1672-3953(2008)02-0053-04 |
| 修稿时间： | 2008年1月15日 |
Crack-preventing Technology for Concrete Construction of Abutments of Bridges |
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| Wang Qingjiang,Wang Yue,Wang Dong.Crack-preventing Technology for Concrete Construction of Abutments of Bridges[J].Traffic Engineering and Technology for National Defence,2008,6(2):53-56. |
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| Authors: | Wang Qingjiang Wang Yue Wang Dong |
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| Institution: | Wang Qingjiang,Wang Yue,Wang Dong(Da-Cheng Railway Headquarters of the 18th Bureau Group of the Railway Building Corporation of China,Tianjin 300222,China) |
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| Abstract: | How to prevent temperature-caused cracks from emerging in concrete is always a serious problem in the construction of massive concrete structures. With the construction of the solid abutments of the bridges of the Da-Cheng capability-enhancing project of the double line of the Dazhou-Chengdu Railway as a practical example, the causes of the surface fissures in concrete of the bridge during the early phase of the construction are analyzed in the paper. It is found that the fissures result from the improper a... |
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| Keywords: | abutment massive concrete temperature-caused crack contraction-caused crack crumbling of concrete |
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