| 均布荷载下预应力FRP筋钢与混凝土组合梁轴向力计算 |
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| 引用本文： | 王德选,王连广,张斌.均布荷载下预应力FRP筋钢与混凝土组合梁轴向力计算[J].东北大学学报(自然科学版),2008,29(10):1498-1501. |
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| 作者姓名： | 王德选 王连广 张斌 |
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| 作者单位： | 1. 东北大学资源与土木工程学院,辽宁,沈阳,110004
2. 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： | 高等学校博士学科点专项科研项目，建设部科技攻关项目 |
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| 摘 要： | 外荷载作用下,预应力FRP筋钢与混凝土组合梁的交接面必产生相对滑移,预应力FRP筋内力会随外荷载增加而增加,这种交接面滑移和FRP筋内力增量会导致混凝土翼缘板、钢梁、连接件受力性能发生变化.针对这一问题,结合预应力组合梁实际受力特征,利用弹性理论,建立了考虑组合梁交接面相对滑移和预应力FRP筋内力增量影响的轴向力微分方程,给出均布荷载下组合梁中混凝土板和钢梁的轴向力理论计算公式.计算结果表明,预应力FRP筋组合梁的轴向力随着连接件刚度的增大和外荷载增加而增大,组合梁跨中截面轴向力最大,从跨中到梁端按非线性逐渐减小,梁端部轴向力近似为零,预应力FRP筋内力增量对组合梁轴向力影响较小,可以忽略其对...
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| 关 键 词： | 预应力FRP筋 组合梁 轴向力 计算公式 |
Calculation of Axial Compressive Force of Prestressed FRP Bar-Concrete Composite Beam Under Uniformly Distributed Load |
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| WANG De-xuan,WANG Lian-guang,ZHANG Bin.Calculation of Axial Compressive Force of Prestressed FRP Bar-Concrete Composite Beam Under Uniformly Distributed Load[J].Journal of Northeastern University(Natural Science),2008,29(10):1498-1501. |
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| Authors: | WANG De-xuan WANG Lian-guang ZHANG Bin |
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| Institution: | WANG De-xuan1 WANG Lian-guang1,ZHANG Bin2(1.School of Resources & Civil Engineering,Northeastern University,Shenyang 110004,China,2.School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China.) |
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| Abstract: | The relative slip will unavoidably come to pass on the bar-concrete interface in a prestressed FRP bar-concrete composite beam under external loading,and the stress in a prestressed FRP bar increases correspondingly with the external loading.The interface slip and stress increment will result in the stress redistribution between concrete flange plate,and H-steel beam and shear connector.According to the structural and bearing characteristics and elastic theory,some differential equations of axial force on w... |
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| Keywords: | prestressed FRP bar composite beam axial force calculation formula |
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