| 预应力钢与高强混凝土组合梁变形性能 |
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| 引用本文： | 许伟,王连广,许峰,朱浮声.预应力钢与高强混凝土组合梁变形性能[J].东北大学学报(自然科学版),2005,26(4):291-294. |
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| 作者姓名： | 许伟 王连广 许峰 朱浮声 |
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| 作者单位： | 东北大学资源与土木工程学院,辽宁沈阳,110004;沈阳建筑大学土木工程学院,辽宁沈阳,110168 |
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| 基金项目： | 建设部科技攻关项目，辽宁省教育厅资助项目 |
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| 摘 要： | 通过预应力钢与高强混凝土组合梁的试验研究,得到其荷载-挠度曲线,分析表明,预应力的施加使钢与高强混凝土组合梁的弹性承载力提高10%左右;考虑交接面相对滑移对预应力钢与高强混凝土组合梁变形的影响,利用弹性分析理论建立了预应力钢与高强混凝土组合梁的变形微分方程,得到了跨中集中荷载、均布荷载及对称集中荷载作用下的预应力钢与高强混凝土组合梁的变形计算公式,计算结果与试验结果吻合良好·
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| 关 键 词： | 预应力 组合梁 高强混凝土 变形性能 |
| 文章编号： | 1005-3026(2005)04-0393-04 |
| 修稿时间： | 2004年6月28日 |
Load-Bearing Deformation of Pre-Stressed Steel and High Strength Concrete Composite Beams |
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| XU Wei,WANG Lian-guang,XU Feng,ZHU Fu-sheng.Load-Bearing Deformation of Pre-Stressed Steel and High Strength Concrete Composite Beams[J].Journal of Northeastern University(Natural Science),2005,26(4):291-294. |
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| Authors: | XU Wei WANG Lian-guang XU Feng ZHU Fu-sheng |
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| Institution: | (1) Sch. of Resources and Civil Eng., Northeastern Univ., Shenyang 110004, China; (2) Sch. of Resources and Civil Eng., Shenyang Jianzhu Univ., Shenyang 110168, China |
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| Abstract: | A load-deformation curve was obtained through experiments for the pre-stressed steel and high strength concrete composite beams. The result showed that the elastic bearing capacity of such beams can increase by about 10%. Taking account of the relative slip in between two joint faces of those beams and its effect on the deformation of the simple supported beams, a differential equation of deformation is given on the basis of theory of elastic analysis. Then, the formulas to calculate the deformation of a beam span on which concentrated, distributed or symmetrically concentrated load is acting are proposed. A good agreement is obtained between the calculating results and experimental results. |
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| Keywords: | pre-stress composite beams high strength concrete deformation |
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