折线先张法混凝土预应力梁受力裂缝分析
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摘要
折线先张法混凝土预应力梁避免了后张法及普通先张法梁体在耐久性和施工工艺等方面的缺点,较为有效地控制了梁体裂缝出现和延伸。本文通过对后张法及折线先张法预应力梁体进行受力后裂缝分析,验证了理论计算与室内试验的正确性,表明折线先张预应力梁体良好的受力性能。
The pretensioned concrete prestressed beam which has broken lines avoids the defects of the post-tensioned and ordinary pretensioned beam in durability and construction technology, it can effectively controls the appearance and extension of beam cracks. This paper proved to be correct of the theoretical calculation and laboratory test by analysing post-tensioning method and broken line pretensioning method, the results showed that the pretensioned concrete prestressed beam which had broken lines had good mechanical properties.
The pretensioned concrete prestressed beam which has broken lines avoids the defects of the post-tensioned and ordinary pretensioned beam in durability and construction technology, it can effectively controls the appearance and extension of beam cracks. This paper proved to be correct of the theoretical calculation and laboratory test by analysing post-tensioning method and broken line pretensioning method, the results showed that the pretensioned concrete prestressed beam which had broken lines had good mechanical properties.
引文
[1]刘立新,安鸿飞,于秋波,等.淮河大桥35m先张折线形箱梁预应力损失的研究[J].郑州大学学报(工学版),2007(4):12-15.
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[3]徐新瑞.折线形先张法预应力混凝土箱梁受力性能的分析[D].郑州:郑州大学,2010.
[4]郑显锐.30m折线配筋预应力混凝土先张T梁施工技术及承载能力研究[D].成都:西南交通大学,2017.
[5]王俊,刘立新,赵静超.折线先张预应力混凝土梁施工阶段性能试验研究[J].中外公路,2009(6):116-120.
[2]胡丹丹.配500MPa钢筋折线先张法预应力混凝土梁受力性能的研究[D].郑州:郑州大学,2007.
[3]徐新瑞.折线形先张法预应力混凝土箱梁受力性能的分析[D].郑州:郑州大学,2010.
[4]郑显锐.30m折线配筋预应力混凝土先张T梁施工技术及承载能力研究[D].成都:西南交通大学,2017.
[5]王俊,刘立新,赵静超.折线先张预应力混凝土梁施工阶段性能试验研究[J].中外公路,2009(6):116-120.