| 钢筋混凝土相互作用效应的钢筋刚化模拟 |
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| 引用本文： | 龙渝川,周元德,张楚汉.钢筋混凝土相互作用效应的钢筋刚化模拟[J].清华大学学报(自然科学版),2007,47(6):793-796. |
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| 作者姓名： | 龙渝川 周元德 张楚汉 |
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| 作者单位： | 清华大学,水利水电工程系,北京,100084 |
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| 摘 要： | 为了分析大体积钢筋混凝土配筋结构的承载能力,发展了钢筋刚化方法。通过调整钢筋刚度模拟钢筋混凝土受拉刚化效应,推导了刚度调整后的钢筋一维本构关系,并与混凝土弥散裂缝模型结合构成钢筋混凝土分析程序。分别采用钢筋刚化模型和传统的混凝土刚化模型,模拟了McNeice钢筋混凝土板试验,二者的计算结果一致,并均与试验结果高度吻合。结果表明:本模型可以反映受拉刚化效应对结构刚度的贡献,可用于分析钢筋混凝土结构的承载能力。
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| 关 键 词： | 钢筋混凝土 受拉刚化 钢筋刚化 混凝土刚化 弥散裂缝模型 |
| 文章编号： | 1000-0054(2007)06-0793-04 |
| 修稿时间： | 2006年4月28日 |
Reinforcement stiffening model for reinforced concrete interaction effects |
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| LONG Yuchuan,ZHOU Yuande,ZHANG Chuhan.Reinforcement stiffening model for reinforced concrete interaction effects[J].Journal of Tsinghua University(Science and Technology),2007,47(6):793-796. |
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| Authors: | LONG Yuchuan ZHOU Yuande ZHANG Chuhan |
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| Abstract: | A reinforcement stiffening model was developed to simulate the interactions of large concrete structures with steel reinforcement bars.The method modifies the reinforcement stiffness to account for the tension stiffening effect of flexural reinforced concrete(RC) members.A 1-D constitutive model was derived for the rebar to form an RC analysis program with the smeared crack model for concrete.Numerical results for the McNeice RC slab test compare well with experimental results and also with predictions of traditional concrete stiffening analysis method.Therefore,the reinforcement stiffening model can simulate tension stiffening effects to analyze the structural load-carrying capacity of reinforced concrete structures. |
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| Keywords: | reinforced concrete tension stiffening reinforcement stiffening concrete stiffening smeared crack model |
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