混凝土骨料级配对抗压强度影响的数值模拟

Numerical simulation on affection of aggregate gradation to concrete compressive strength

将混凝土粗骨料分档组配,并建立了9个不同组配比例的混凝土细观数值模型,以便模拟混凝土粗骨料在分档比例不同的情况下,对混凝土抗压强度的影响情况。利用有限元分析系统MFPA2D,模拟了混凝土在单轴受压状态下的破坏过程。结果显示,分档比例不同,会直接影响混凝土的抗压强度。通过与物理试验结果对比,验证了数值模拟方法的可行性。

According to different gradation of harsh aggregate, nine microscopic numerical models of different gradation ratio have been built up. So it＇s easy to simulate the affection of compressive strength of concrete under different gradation of harsh aggregate. The cracking process under uniaxial compression has been simulated by FEM code MAPAzD. According to the results, the compressive strength of concrete was affected directly by different gradation of harsh aggregate. The feasibility of numerical simulation on this area has been proofed by the contrast to physical test.