| 预应力砼薄壁箱梁破坏形态研究 |
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| 引用本文： | 周锐,周志祥,邵小康,宋雷.预应力砼薄壁箱梁破坏形态研究[J].重庆交通大学学报(自然科学版),2005,24(5):1-4,9. |
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| 作者姓名： | 周锐 周志祥 邵小康 宋雷 |
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| 作者单位： | 重庆交通学院,重庆,400074;四川省成都市交通局质监站,四川,成都,610041 |
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| 摘 要： | 笔者依据30m跨径预应力砼足尺薄壁箱梁的试验研究,分析了其在尚未达到预期极限荷载下发生脆性破坏的原因,提出对在底板中设置预应力束的薄壁箱形预应力砼结构,应计入预应力束因梁体变形产生反向作用力的不利影响,并据此提出了预应力束上保护层厚度的建议公式.
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| 关 键 词： | 薄壁箱梁 脆性破坏 反向作用力 上保护层厚度 |
| 文章编号： | 1001-716X(2005)05-0001-04 |
| 修稿时间： | 2004年9月22日 |
Research on brittleness wreck of prestressed concrete box-beams |
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| ZHOU Rui,ZHOU Zhi-xiang,SHAO Xiao-kang,SONG Lei.Research on brittleness wreck of prestressed concrete box-beams[J].Journal of Chongqing Jiaotong University,2005,24(5):1-4,9. |
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| Authors: | ZHOU Rui ZHOU Zhi-xiang SHAO Xiao-kang SONG Lei |
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| Abstract: | Based on the experiment of a 30m-span prestressed concrete box-beam, the brittleness destroy when load less then high-point one has been analysied. It is suggested that the disadvantaged effect of reaction from the prestressed steel to the box because of the distortion must be numbered in the prestressed concrete box-beam which prestressed steel was placed in the soleplate.And based on this theory, a suggested computationsal formula of the thickness of the safeguard concrete above the prestressed steel has been fetched. |
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| Keywords: | featheredge box-beams brittleness destroy opposite acting force the thickness of the concrete above the prepressed steel |
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