| 预应力加固混凝土框架梁体外筋应力增量试验研究 |
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| 引用本文： | 金凌志,曹霞,王少喻,王超.预应力加固混凝土框架梁体外筋应力增量试验研究[J].四川建筑科学研究,2009,35(1). |
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| 作者姓名： | 金凌志 曹霞 王少喻 王超 |
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| 作者单位： | 1. 桂林工学院土木工程系,广西,桂林,541004
2. 湖南工程职业技术学院土木系,湖南,长沙,410151 |
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| 基金项目： | 广西自然科学基金，广西自然科学基金 |
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| 摘 要： | 体外筋应力增量是体外预应力混凝土梁强度设计中的一个重要指标.通过对一组单跨框架梁的静载试验,总结了体外筋应力增量随荷载增长变化及其与梁跨中挠度近似成直线关系的规律;论证了由于框架柱对框架梁存在侧向约束的作用,降低了体外筋的有效预应力和应力增量,为体外预应力加固混凝土框架梁的设计提供了一些参考依据.
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| 关 键 词： | 体外预应力 钢筋混凝土框架梁 应力增量 |
Stress increment analysis on external steel bar of external prestressing reinforce concrete frame beam |
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| JIN Lingzhi,CAO Xia,WANG Shaoyu,WANG Chao.Stress increment analysis on external steel bar of external prestressing reinforce concrete frame beam[J].Building Science Research of Sichuan,2009,35(1). |
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| Authors: | JIN Lingzhi CAO Xia WANG Shaoyu WANG Chao |
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| Affiliation: | JIN Lingzhi1,CAO Xia1,WANG Shaoyu2,WANG Chao1(1.Department of Civil Engineering,Guilin University of Technology,Guilin541004,China,2.Depqrtment of Civil Engineering,Hunan Project Professional Technology Institute,Changsha410151,China) |
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| Abstract: | The stress increment is an important index for the strength design of externally prestressed beam.According to a static test of a set of span frame beams,the rules that the external steel bar stress increment changes by loading and that it is almost linear relation with middle deflection of the beam are summarized;According to the contrast between theoretical arithmetic and experimental data,because of lateral restraint exist in frame beam,the stress increment and effective prestress of the external steel b... |
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| Keywords: | external prestressing reinforced concrete frame beam stress increment |
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