摘要
为了提升既有钢筋混凝土柱的抗震性能,研制了一种新型的空间钢构架约束既有钢筋混凝土柱的组合柱。为进一步研究这种新型组合柱的抗震性能,采用ABAQUS有限元软件,建立了空间钢构架约束既有钢筋混凝土柱的组合柱抗震性能的有限元分析模型。在模型可行性验证的基础上,探讨了空间钢构架混凝土约束影响系数和轴压比等对组合柱抗震性能的作用规律。研究结果表明,在其他条件相同时,随着组合柱轴压比的增大,其承载能力提高,但其延性有所降低;增大空间钢构架混凝土约束影响系数,组合柱的承载力提高和延性性能得到改善。空间钢构架约束既有钢筋混凝土柱的组合柱具有承载力高和良好的抗震性能。
In order to improve the seismic behavior of the existing reinforced concrete column,a new type of composite column with the existing reinforced concrete column confined by spatial steel frame was manufactured.In order to further study the seismic behavior of this new composite column,a finite element analysis model of the seismic behavior of the composite column with spatial steel frames restraining the reinforced concrete columns was established by using ABAQUS finite element software.Based on the feasibility verification of the finite element model,the influence of the axial compression ratio and constraint influence coefficient of spatial steel frame concrete on the seismic behavior of composite column is explored.The results show that under other conditions being equal,as the axial compression ratio of the composite column increases,its load carrying capacity increases,but its ductility decreases;with the increase of the constraint influence coefficient of spatial steel frame concrete,the bearing capacity and ductility performance of the composite column are improved.The composite column with existing reinforced concrete column confined by spatial steel frame has high bearing capacity and good seismic behavior.
作者
任运泽
唐兴荣
REN Yunze;TANG Xingrong(School of Civil Engineering,SUTS,Suzhou 215011,China)
出处
《苏州科技大学学报(工程技术版)》
2025年第2期27-34,共8页
Journal of Suzhou University of Science and Technology(Engineering and Technology Edition)
基金
国家重点研发计划资助项目(2016YFC0701800)。
关键词
空间钢构架
约束混凝土
既有钢筋混凝土柱
抗震性能
有限元分析
spatial steel frame
constrain concrete
existing reinforced concrete columns
seismic behavior
finite element analysis
