- 宋 斌，刘 芳
2022年第6期
摘要
引用本文
基于ABAQUS有限元软件，采用混凝土塑性损伤（CDP）模型模拟了超高性能混凝土（UHPC）的本构关系，使用三维实体单元和桁架单元模拟了UHPC和纵筋之间的接触关系，研究了配筋率、截面有效高度与截面高度比值和UHPC抗拉强度对UHPC梁抗弯性能的影响。结果表明：随着配筋率的提高和截面有效高度与截面高度比值的增大，UHPC梁的屈服荷载、峰值荷载以及对应的挠度均明显提高；随着UHPC抗拉强度的增大，UHPC梁的峰值荷载和屈服荷载增大，但峰值荷载和屈服荷载对应的挠度减小。
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,刘芳.配筋超高性能混凝土梁抗弯性能有限元分析[J].混凝土与水泥制品,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.
