预应力砼空心板桥纵向裂缝分析 |
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引用本文: | 周志祥,任超,彭兴国,范亮. 预应力砼空心板桥纵向裂缝分析[J]. 重庆交通大学学报(自然科学版), 2005, 24(2): 8-11 |
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作者姓名: | 周志祥 任超 彭兴国 范亮 |
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作者单位: | 重庆交通学院,重庆,400074;重庆市高速公路北方建设分公司,重庆,40042;重庆市公路工程质量检测中心,重庆,400060 |
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摘 要: | 依据30m跨径预应力砼足尺空心板梁的试验研究,分析了其沿预应力钢束纵向开裂的原因,提出在薄壁箱形预应力砼结构设计中,在考虑获得所需纵向预应力的同时,应计入泊松效应和预应力钢束对构件变形产生的反向作用力的不利影响.
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关 键 词: | 空心板桥 纵向裂缝 泊松效应 反向作用力 |
文章编号: | 1001-716X(2005)02-0008-04 |
修稿时间: | 2004-06-27 |
Research on longitudinal cracks of prestressed concrete box-beams |
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Abstract: | Based on the experiment of a 30m-span prestressed concrete box-beam, the longitudinal cracks along prestressed tendons are studied. It is suggested that the disadvantageous influences from both Poisson effect and opposite acting force resulting from the deformation of beams should be taken into consideration for thin-wall structures. |
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Keywords: | prestressed concrete box-beams longitudinal crack poisson effect opposite acting force |
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