| 金浏,杜修力.钢筋混凝土构件细观数值模拟分析[J].水利学报,2012,43(10): |
| 钢筋混凝土构件细观数值模拟分析 |
| Meso numerical simulation of reinforced concrete members |
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| DOI： |
| 中文关键词: 钢筋混凝土 细观数值模型 细观破坏 非线性力学特性 |
| 英文关键词: reinforced concrete meso-scale numerical model meso damage nonlinear mechanical properties |
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| 摘要点击次数: 2467 |
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| 中文摘要: |
| 在混凝土材料细观力学分析模型的基础上，提出了一种钢筋混凝土构件非线性力学特性分析的细观数值方法。使用这种细观力学方法对轴压加载作用下某一钢筋混凝土柱的损伤破坏过程及宏观力学特性进行了数值模拟研究，并与试验结果和宏观力学模型方法分析结果进行了对比。研究表明：（1）细观尺度上，采用细观力学模型获得的钢筋混凝土柱的破环模式及宏观力学性能均与试验结果吻合良好，验证了本文细观力学方法的有效性和准确性；（2）相比于宏观尺度分析模型，细观力学模型考虑了混凝土的非均质特性，从而更真实地揭示了钢筋混凝土柱的破坏过程及破坏模式，且计算结果与试验结果对比也更为吻合。 |
| 英文摘要: |
| Based on a meso mechanical analysis model of concrete material， a meso numerical approach is developed to investigate the nonlinear mechanical properties of reinforced concrete members. The damage process and the macro mechanical properties of a reinforced concrete column under axial compression are simulated by the proposed methodology in this study. The meso-scale simulation results are compared with those of macro-scale mechanical analysis and the experimental observations. The investigation results indicate that （1） at meso-level， the failure modes and the macro mechanical properties of the reinforced concrete column obtained from the meso element equivalent model agree well with the experimental observations， which demonstrate the effectiveness and correctness of the established meso-mechanical approach；（2） Compared to the macro-scale model， the meso mechanical model considering the heterogeneity of concrete，could reveal the damage process and failure modes of reinforced concrete column more realistic，and the meso numerical results are more consistent with the experimental results. |
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