| 基于局部滑移理论的钢筋混凝土轴拉构件刚度分析 |
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| 引用本文： | 吴二军,赵琼娟,张素玲.基于局部滑移理论的钢筋混凝土轴拉构件刚度分析[J].水利水电科技进展,2011,31(6):23-26. |
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| 作者姓名： | 吴二军 赵琼娟 张素玲 |
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| 作者单位： | 河海大学土木与交通学院,江苏南京,210098 |
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| 摘 要： | 基于钢筋与混凝土黏结的局部滑移理论,将开裂后混凝土轴心受拉构件分为无滑移未开裂段和局部滑移段,以一个裂缝间距范围内这两段的平均刚度作为整个构件的刚度,推导出轴心受拉构件刚度的计算公式。该公式刚度计算值与试验值差距较大,但该公式计算的平均裂缝宽度与我国现行规范中的计算值吻合较好。给出了一个范例试件局部滑移长度和轴拉刚度随轴力增加的变化曲线。结果表明:局部滑移长度随轴力的增加近似线性延长;轴拉刚度在试件刚开裂时迅速退化,开裂后退化速度减缓。
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| 关 键 词： | 钢筋混凝土 局部滑移理论 拉伸刚度 局部滑移长度 刚度退化 |
| 修稿时间： | 2011/12/21 0:00:00 |
Stiffness of axial tensile members of reinforced concrete based on local sliding theory |
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| WU Er-jun,ZHAO Qiong-juan,ZHANG Su-ling.Stiffness of axial tensile members of reinforced concrete based on local sliding theory[J].Advances in Science and Technology of Water Resources,2011,31(6):23-26. |
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| Authors: | WU Er-jun ZHAO Qiong-juan ZHANG Su-ling |
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| Affiliation: | WU Er-jun,ZHAO Qiong-juan,ZHANG Su-ling (College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China) |
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| Abstract: | Based on the local sliding theory for the bonding between steel bars and concrete,the cracked axial tensile member was divided into no-sliding uncracked part and local-sliding part,and the average stiffness of the two parts within a crack spacing was regarded as the stiffness of the whole member.A formula for the stiffness of axial tensile member was derived.The calculated stiffness by means of the formula was compared with the experimental data,and there was a large difference.However,the average crack wid... |
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| Keywords: | reinforced concrete local sliding theory tensile stiffness local sliding length stiffness degradation |
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