Numerical Modelling of Strain Localization in Reinforced Concrete and Its Application to Prediction of Crack Spacing and Crack Width

钢筋混凝土应变局部化的数值模拟及其在裂缝间距和裂缝宽度预测中的应用

• 批准号: DP0345990
• 负责人: Prof Graham Baker
• 金额: $ 13.92万
• 依托单位: University of Southern Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-02-17 至 2011-09-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0345990
• 关键词: Numerical; Modelling; Strain; Localization; Reinforced

Cracking of concrete has a major influence on structural performance. Prediction of crack spacing and crack widths is essential for serviceability considerations of reinforced concrete. The available formulas to evaluate crack widths are approximate and give a wide scatter of predicted values. The project aims to provide a new numerical methodology that will (finally) predict crack spacing correctly. The expected outcomes include a numerical analysis model and a set of algorithms to predict crack widths. This will markedly improve the understanding of the mechanism of crack spacing and provide a better prediction of crack spacing and crack widths.

混凝土的开裂对结构性能有着重要的影响。裂缝间距和裂缝宽度的预测对于钢筋混凝土的正常使用性能至关重要。评估裂缝宽度的可用公式是近似的，并且给出了预测值的广泛分散。该项目旨在提供一种新的数值方法，将（最终）正确预测裂纹间距。预期的成果包括一个数值分析模型和一套算法来预测裂缝宽度。这将显着提高裂纹间距的机制的理解，并提供一个更好的预测裂纹间距和裂纹宽度。