- 宋 斌，劉 芳
引用本文基于ABAQUS有限元軟件，采用混凝土塑性損傷（CDP）模型模擬了超高性能混凝土（UHPC）的本構關系，使用三維實體單元和桁架單元模擬了UHPC和縱筋之間的接觸關系，研究了配筋率、截面有效高度與截面高度比值和UHPC抗拉強度對UHPC梁抗彎性能的影響。結果表明：隨著配筋率的提高和截面有效高度與截面高度比值的增大，UHPC梁的屈服荷載、峰值荷載以及對應的撓度均明顯提高；隨著UHPC抗拉強度的增大，UHPC梁的峰值荷載和屈服荷載增大，但峰值荷載和屈服荷載對應的撓度減小。 Based on ABAQUS finite element software, the constitutive relationship of ultra-high performance concrete (UHPC) was simulated by concrete damage plasticity(CDP) model, and the contact relationship between UHPC and longitudinal reinforcement were simulated by three-dimensional solid element and truss element. The effects of reinforcement ratio, the ratio of effective section height to section height and UHPC tensile strength on the flexural performance of UHPC beam were studied. The results show that the yield load, peak load and corresponding deflection of UHPC beam increase significantly with the increase of reinforcement ratio and the ratio of effective section height to section height. With the increase of UHPC tensile strength, the peak load and yield load of UHPC beam increase, but the deflections corresponding to peak load and yield load decrease.
宋斌,劉芳.配筋超高性能混凝土梁抗彎性能有限元分析[J].混凝土與水泥制品,2022(6):58-61. SONG B,LIU F.Finite Element Analysis of Flexural Performance of Reinforced Ultra-high Performance Concrete Beams[J].China Concrete and Cement Products,2022(6):58-61.