| 温塘河特大桥主拱拱座基础裂缝成因及防止措施 |
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| 引用本文： | 胡继龙,王春梅.温塘河特大桥主拱拱座基础裂缝成因及防止措施[J].重庆交通大学学报(自然科学版),2007,26(3):20-23. |
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| 作者姓名： | 胡继龙 王春梅 |
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| 作者单位： | 1. 重庆交通大学,重庆400074
2. 重庆高速公路发展公司垫利分公司,重庆,400060 |
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| 摘 要： | 大跨径拱桥拱座基础属于大体积砼结构工程,在浇筑过程中产生大量水化热,使砼体内与表面形成较大温差,产生热应力,从而导致砼体产生深度不等的裂缝.笔者以重庆渝邻高速公路温塘河特大桥拱座基础的施工技术为例,对大体积砼体内的温度应力进行了分析计算,并提出了防裂措施.
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| 关 键 词： | 大体积砼 特大跨拱桥拱座基础 温度裂缝 防裂措施 |
| 文章编号： | 1001-716X(2007)03-0020-04 |
| 修稿时间： | 2006年3月24日 |
Causes and Precaution for Concrete Cracks in Skewback Foundation of the Wengtanghe Bridge |
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| HU Ji-long,WANG Chun-mei.Causes and Precaution for Concrete Cracks in Skewback Foundation of the Wengtanghe Bridge[J].Journal of Chongqing Jiaotong University,2007,26(3):20-23. |
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| Authors: | HU Ji-long WANG Chun-mei |
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| Abstract: | The skewback foundation of super large span arch bridge belongs to voluminous concrete structures,and a great deal of hydrated heat is generated during constructing,and a biggish difference in temperature between inside and outside of the concrete constructure is formed.Consequently,the difference intemperatures may lead to cracks due to thermal stress with different depths.Taking the construction techniques of skewback foundation of Wentanghe Bridge,a super large span arch bridge of Yulin Expressway in Chongqing,for example,the thermal stress and presented preventive measures and construction methods for the thermal cracks of mass concrete were analyzed and figured out. |
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| Keywords: | voluminous concrete skewback foundaion of super large span arch bridge concrete cracks due to thermal stress preventive measures for cracks |
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