不同类型的钢管混凝土组合柱侧向冲击响应分析
Analysis on lateral impact responses of concrete-filled steel tubular composite columns with different cross-sections
贾世珣 1彭啸2
作者信息
- 1. 兰州博文科技学院,甘肃 兰州 730101
- 2. 南昌大学工程建设学院,江西 南昌 330031
- 折叠
摘要
随着钢-混凝土组合结构的发展,近年来钢管混凝土(CFST)结构在泥石流防护工程中得到运用.为研究钢管混凝土组合柱在防护结构中的侧向抗冲击性能,设计了3种不同截面类型的钢管混凝土柱,采用ABAQUS有限元软件建立了钢管混凝土柱在侧向冲击下的数值模型,对比了3种组合柱的侧向变形、冲击力、塑性变形耗能等侧向冲击响应和破坏模式.研究结果表明:3种柱中组合截面钢管混凝土柱的侧向抗冲击性能最好,其在侧向冲击作用下的整体变形和局部塑性损伤最小;与圆形截面钢管混凝土柱相比,圆端形截面和组合截面柱的最大侧向位移分别减小28.9%和43.4%,冲击力(平台值)分别提高31.3%和80.9%.
Abstract
With the development of steel-concrete composite structures,concrete-filled steel tubular(CFST)members have been applied in debris flow protection engineering in recent years.To study the lateral impact performance of CFST composite columns in protective structures,three different cross-sectional types of CFST composite columns were designed.A lateral impact finite element model of CFST columns was developed using ABAQUS finite element software.The lateral impact response of three composite columns was compared,including the lateral deformation,impact force,plastic deformation energy,and failure modes.The results indicated that among the three types of columns,the column with the composite section had the best lateral impact resistance,with the smallest global deformation and local plastic damage under lateral impact.Compared with the circular CFST column,the maximum lateral displacement of round-ended and composite section columns was reduced by 28.9%and 43.4%,respectively,and the plateau impact force was increased by 31.3%and 80.9%,respectively.
关键词
钢管混凝土柱/冲击/有限元分析/动态响应Key words
concrete-filled steel tubular columns/impact/finite element analysis/dynamic responses引用本文复制引用
出版年
2024
NETL
NSTL
万方数据