摘要
为了分析内置CFRP圆管的方钢管混凝土角柱节点在往复载荷作用下的力学性能,以及不同的材料属性对节点力学性能的影响,利用ABAQUS有限元分析软件建立了10个角柱节点模型,分析钢材强度、含钢率和轴压比等参数对节点力学性能的影响.结果表明,随着钢材强度的提高,极限承载力有显著提高,含钢率对极限承载力和延性均有一定的改善,轴压比的增加使得极限承载力急剧下降,且延性变差.加强环宽度的增加对节点承载力有显著提高,达到70 mm之后有脆性破坏的趋势.
In order to study the mechanical properties of comer joints of concrete filled square steel tube with inner CFRP circular tube under the action of cyclic loads and the effect of different material attributes on the mechanical properties of the joints, ten models for the comer joints were established with ABAQUS finite element analysis software, and the influence of such parameters as steel strength, steel ratio and axial compression ratio on the mechanical properties of the joints was analyzed. The results show that with increasing the steel strength, the ultimate bearing capacity can be significantly improved. The ultimate bearing capacity and ductility can be improved by the steel ratio. With increasing the axial compression ratio, the ultimate bearing capacity significantly reduces, and the ductility becomes poor. The beating capacity can be significantly improved by increasing the width of stiffening ring, but there will be a tendency of brittle failure when the width reaches 70 mm.
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2016年第4期467-475,共9页
Journal of Shenyang University of Technology
基金
沈阳市科技计划项目(F13-316-1-43)
关键词
CFRP圆管
方钢管
加强环
角柱节点
往复载荷
力学性能
滞回曲线
有限元分析
CFRP circular tube
square steel tube
stiffening ring
comer joint
cyclic load
mechanicalproperty
hysteresis curve
finite element analysis
作者简介
魏华（1973-），女，山西交城人，副教授，博士，主要从事结构工程等方面的研究．
