| 某预应力混凝土连续箱梁桥顶板裂纹成因分析 |
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| 引用本文： | 侍刚,唐细彪.某预应力混凝土连续箱梁桥顶板裂纹成因分析[J].世界桥梁,2009(4). |
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| 作者姓名： | 侍刚 唐细彪 |
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| 作者单位： | 中铁大桥局集团桥科院有限公司,湖北,武汉,40034 |
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| 摘 要： | 从分层混凝土收缩、支架沉降、温差等方面,对某预应力混凝土连续箱梁桥在施工过程中出现的顶板裂纹成因进行分析,获得造成混凝土开裂的主次原因,并结合现场试验,分析裂纹对结构的承载能力的影响程度,提出相应的处理措施.
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| 关 键 词： | 箱梁桥 裂纹 收缩 沉降 温差 分析 |
Analysis of Formation Causes of Cracks in Top Slab of a Prestressed Concrete Continuous Box Girder Bridge |
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| SHI Gang,TANG Xi-biao.Analysis of Formation Causes of Cracks in Top Slab of a Prestressed Concrete Continuous Box Girder Bridge[J].World Bridges,2009(4). |
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| Authors: | SHI Gang TANG Xi-biao |
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| Institution: | SHI Gang,TANG Xi-biao(Bridge Science Research Institute Ltd.,China Zhongtie Major Bridge Engineering Group,Wuhan 430034,China) |
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| Abstract: | The formation causes of the cracks occurring in top slab of a prestressed concrete continuous box girder bridge in the process of construction are analyzed from aspect of the shrinkage of each layer concrete,the falsework settlement and temperature differences and the primary and secondary causes leading to the cracks have been known.Further with reference to the filed tests,the degrees of influence of the cracks on the carrying capacity of the structure are analyzed and the corresponding measures for handl... |
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| Keywords: | box girder bridge crack shrinkage settlement temperature difference analysis |
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