高原地区铁路预制混凝土梁开裂问题原因分析与控制措施研究

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发布时间：2020-01-06 00:00:00

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高原地区铁路预制混凝土梁开裂问题原因分析与控制措施研究

Cause Analysis and Control Method Research on the Cracking of Railway Prefabricated Concrete Beams in the Plateau Region

２０19年第5期

预制梁；开裂；收缩应力；机械应力；保温养护

Prefabricated beams; Cracking; Shrinkage stress; Mechanical stress; Temperature-keep curing

２０19年第5期

10.19761/j.1000-4637.2019.05.044.04

沈育斌

中铁十一局集团第三工程有限公司，十堰 442000

沈育斌

沈育斌.高原地区铁路预制混凝土梁开裂问题原因分析与控制措施研究[J].混凝土与水泥制品,2019(5):44-47.

SHEN Y B.Cause Analysis and Control Method Research on the Cracking of Railway Prefabricated Concrete Beams in the Plateau Region[J].China Concrete and Cement Products,2019(5):44-47.

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摘要：针对高原地区铁路预制梁开裂的几种常见形式，从环境因素、材料因素、结构因素和工艺因素角度分析了其开裂的原因。提出了优化混凝土原材料品质与配合比、采取保温及保湿养护方式、增设防裂钢板网、改进拆模工艺等措施来降低预制梁体混凝土非荷载收缩开裂及降低受到外荷载应力开裂的风险，并在实际工程中取得了良好的效果。 Abstract: Aimed at the common cracking forms of the railway prefabricated beams in the plateau region were researched, the causes of cracking were analyzed from environmental factors, material factors, structural factors and technological factors. The measures of improving the concrete raw materials quality, optimizing the concrete mix proportion, implementing the curing methods of warm and humidity keeping, adding anti-crack steel mesh and improving the mold removal process were put forward, which had a significant effect on reducing the risk of non-load shrinkage cracking and external load stress cracking of prefabricated concrete beam and showed a good cracking control results in the actual engineering.

英文名 : Cause Analysis and Control Method Research on the Cracking of Railway Prefabricated Concrete Beams in the Plateau Region

刊期 : ２０19年第5期

关键词 : 预制梁；开裂；收缩应力；机械应力；保温养护

Key words : Prefabricated beams; Cracking; Shrinkage stress; Mechanical stress; Temperature-keep curing

刊期 : ２０19年第5期

DOI : 10.19761/j.1000-4637.2019.05.044.04

文章编号 :

基金项目 :

作者 : 沈育斌

单位 : 中铁十一局集团第三工程有限公司，十堰 442000

沈育斌

沈育斌.高原地区铁路预制混凝土梁开裂问题原因分析与控制措施研究[J].混凝土与水泥制品,2019(5):44-47.

SHEN Y B.Cause Analysis and Control Method Research on the Cracking of Railway Prefabricated Concrete Beams in the Plateau Region[J].China Concrete and Cement Products,2019(5):44-47.

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摘要

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参考文献

引用本文

摘要：针对高原地区铁路预制梁开裂的几种常见形式，从环境因素、材料因素、结构因素和工艺因素角度分析了其开裂的原因。提出了优化混凝土原材料品质与配合比、采取保温及保湿养护方式、增设防裂钢板网、改进拆模工艺等措施来降低预制梁体混凝土非荷载收缩开裂及降低受到外荷载应力开裂的风险，并在实际工程中取得了良好的效果。

Abstract: Aimed at the common cracking forms of the railway prefabricated beams in the plateau region were researched, the causes of cracking were analyzed from environmental factors, material factors, structural factors and technological factors. The measures of improving the concrete raw materials quality, optimizing the concrete mix proportion, implementing the curing methods of warm and humidity keeping, adding anti-crack steel mesh and improving the mold removal process were put forward, which had a significant effect on reducing the risk of non-load shrinkage cracking and external load stress cracking of prefabricated concrete beam and showed a good cracking control results in the actual engineering.

关键词:

预制梁；开裂；收缩应力；机械应力；保温养护

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