| 64m等高简支预应力混凝土箱梁施工裂缝控制 |
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| 引用本文： | 周伟.64m等高简支预应力混凝土箱梁施工裂缝控制[J].山西建筑,2012,38(26):187-188. |
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| 作者姓名： | 周伟 |
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| 作者单位： | 中铁大桥股份有限公司,湖北武汉,430050 |
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| 摘 要： | 针对安庆长江铁路大桥64 m等高简支预应力混凝土箱梁的施工特点,分析了混凝土结构裂缝产生的原因,提出了等高简支预应力混凝土箱梁裂缝控制措施,特别是采用了预张拉预应力束的方式控制混凝土裂缝的产生。实践证明,采取这些措施对混凝土箱梁裂缝控制效果是明显的。
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| 关 键 词： | 简支箱梁 混凝土结构 裂缝 预应力束 |
Construction cracks control of 64 m same-height simply-supported prestressed concrete box-girder |
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| ZHOU Wei.Construction cracks control of 64 m same-height simply-supported prestressed concrete box-girder[J].Shanxi Architecture,2012,38(26):187-188. |
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| Authors: | ZHOU Wei |
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| Affiliation: | ZHOU Wei(China Railway Daqiao Co.,Ltd,Wuhan 430050,China) |
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| Abstract: | In light of the construction features of 64 m same-height simply-supported prestressed concrete box-girder on Yangtze river railway bridge in Anqing,the paper analyzes the concrete structure cracking causes,puts forward cracks control measures of same-height simply-supported prestressed concrete box-girder,and especially adopts prestressing tendons to control concrete cracks.Practice proves that: the above mentioned measures are effective for controlling concrete box-girder cracks. |
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| Keywords: | simply-supported box-girder concrete structure crack prestressing tendons |
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