摘要
为了研究低强混凝土配筋柱在碳纤维增强聚合物(CFRP)加固后的受压行为,使用ABAQUS软件对低抗压强度的钢筋混凝土柱进行数值模拟及参数分析,采用三维实体单元和三维桁架单元分别对混凝土柱及钢筋进行建模,采用混凝土损伤塑性模型考虑基体压缩和拉伸的损伤。结果表明:相比配筋柱,采用3 mm CFRP护套加固的低强钢筋混凝土柱的承载力提高34%。对于不同基体强度的混凝土配筋柱,CFRP护套存在最优加固厚度。
To investigate the compressive behavior of low-strength concrete reinforced columns after reinforcement with carbon fiber reinforced polymer(CFRP),numerical simulations and parametric analysis of low compressive strength reinforced concrete columns were carried out using ABAQUS software by modeling the concrete columns and reinforcement using three-dimensional solid units and threedimensional truss units respectively.The damage plastic model of concrete was used to consider the compressive and tensile damage of matrix.The results show that,the load carrying capacity of low strength reinforced concrete columns reinforced with 3 mm CFRP sheathing is 34%higher than that of reinforced columns.The CFRP sheath has an optimum reinforcement thickness for concrete-reinforced columns with different matrix strengths.
作者
寇大伦
KOU Da-lun(Yunnan Guanfang Construction Group Co.,Ltd.,650000,Kunming,China)
出处
《建筑技术》
2023年第16期1955-1959,共5页
Architecture Technology
关键词
CFRP
结构加固
钢筋混凝土柱
数值建模
CFRP
structural strengthening
reinforced concrete column
numerical modelling
