| 大跨径连续箱梁加固新浇混凝土裂缝原因及控制 |
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| 引用本文： | 林宝珠. 大跨径连续箱梁加固新浇混凝土裂缝原因及控制[J]. 土木与环境工程学报, 2006, 28(5): 63-65,82 |
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| 作者姓名： | 林宝珠 |
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| 作者单位： | 福建省交通规划设计院,福州市,350004 |
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| 摘 要： | 介绍了一座主跨80 m的多跨预应力混凝土变截面连续箱梁主桥,在维持通车情况下在箱内浇注大批量混凝土,但新浇腹板混凝土受到旧腹板约束而引起收缩裂缝,对新增混凝土裂缝情况介绍、原因分析及控制措施。
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| 关 键 词： | 加固 多跨连续箱梁 新浇腹板混凝土裂缝 控制措施 |
| 文章编号： | 1006-7329（2006）05-0063-03 |
| 收稿时间： | 2006-05-15 |
| 修稿时间： | 2006-05-15 |
Cause Analysis and Treatment Measure on Cracks in New Reinforced Concrete Restricted by Old Web Concrete |
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| LIN Bao - zhu. Cause Analysis and Treatment Measure on Cracks in New Reinforced Concrete Restricted by Old Web Concrete[J]. Journal of Civil and Environmental Engineering, 2006, 28(5): 63-65,82 |
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| Authors: | LIN Bao - zhu |
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| Affiliation: | Fujian Provincial Communications Planning and Design Institute, Fuzhou 350004, P. R. China |
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| Abstract: | In this paper,the cause analysis about cracks on the new concrete web poured in multi-span continuous box-girder of a main bridge was introduced.This bridge is a prestressed concrete one with variable cross sections and an 80-meter main span.When casting reinforced concrete in large volume in box girder during vehicle transport service,the shrinkage cracks in cast-in place reinforced web concrete were formed due to the restriction of old web concrete.Then,the control measure taken on these cracks is discussed. |
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| Keywords: | reinforcement multi-span continuous box girder new web concrete cracks control measure |
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