摘要
应用OpenSEES有限元软件,采用Mander混凝土本构模型和Menegotto-Pinto钢材本构模型对圆中空夹层钢管混凝土进行数值模拟分析,得到力-应变(N-ε)关系曲线,并对空心率、长细比和内外钢管径厚比进行参数分析。结果表明,数值模拟结果与试验结果吻合较好,且圆中空夹层钢管混凝土比实心混凝土延塑性更好,随空心率和外钢管径厚比的增大其极限承载力增大,随长细比的增大其极限承载力减小,但内钢管径厚比的影响很小。
Based on the fiber model by using OPENSEES finite element software, the numerical simulation analysis of the concrete filled steel tubular column was carried out by using Mander concrete constitutive model and Menegotto-Pinto steel constitutive model. The relation curves of stress-strain （1） was obtained and the parameters such as hollow ratio, slenderness ratio and diameter-thickness ratio were analyzed as well. The results show that the numerical simulation results are well fitted with the test results. The circu- lar concrete-filled double skin steel tubular has a good property of ductility. The ultimate bearing capacity increases with the increasing ratios of the hollow and diameter-thickness, and it significantly decreases with the reduced slenderness ratio, while the effect of steel pipe diameter to thickness ratio is very small.
作者
郑玲玲
陈建伟
ZHENG Ling-ling CHEN Jian-wei(College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan Hebei 063009, China Tangshan Institute of Green Building Industrial Technology, Tangshan Hehei 063009,China)
出处
《华北理工大学学报（自然科学版）》
CAS
2017年第1期69-74,共6页
Journal of North China University of Science and Technology：Natural Science Edition
基金
国家自然科学基金资助项目(51278164)
河北省自然科学基金资助项目(E2014209221
E2015209020)
关键词
圆中空夹层钢管混凝土
轴压
纤维模型
.circular hollow sandwich steel tube concrete
axial compression
fiber model
OpenSEES
