摘要
建立了T形配钢型钢混凝土偏压构件力学性能分析的有限元模型,计算结果得到以往实验结果的验证。在此基础上,分析了不同阶段材料应力状态和各参数对偏压构件力学性能的影响。结果表明:T形配钢型钢混凝土构件在不同加载角下的性能有所不同,加载角为180!时极限承载力大于其他角度情况;混凝土抗压强度、型钢含钢率、配筋率、荷载偏心率、长细比对构件荷载-变形曲线的影响较大,随着混凝土强度、型钢含钢率、配筋率的增加,极限承载力和刚度增加;随着荷载偏心率的增加,极限承载力和刚度下降;随着构件长细比的增加,构件承载力总体呈现线性下降趋势,刚度下降明显。
Finite element models for analysing the behaviour of T-shaped steel reinforced concrete eccentric loaded columns were established. The calculated results of the columns were validated by the previous experimental results. Furthermore,the material stress status at different stages and the effect of the relevant parameters on the mechanical behaviours of the columns were analysed. The results indicate that the T-shape steel reinforced concrete columns exhibit different performances at different load angles. The ultimate load bearing capacity at a load angle of 180! is higher than that of other load angles. The parameters such as concrete compressive strength,section steel ratio,steel reinforcement ratio,load eccentricity ratio and length to slenderness ratio exert significant influences on the load-deformation curves of the columns. With the increase of the concrete strength,the section steel ratio or the steel reinforcement ratio,the ultimate load bearing capacity and the stiffness increase. With the increase of the load eccentricity,the ultimate load bearing capacity and the stiffness decrease. With the increase of the length to slenderness ratio,the load bearing capacity has the tendency of linear decreasing in general with the stiffness dropping obviously.
作者
郑永乾
赖鹏松
郑莲琼
Zheng Yongqian Lai Pengsong Zheng Lianqiong(Fujian Provincial Key Laboratory of Advanced Technology and Informationization in Civil Engineering, Fuzhou 350118, China College of Civil Engineering, Fuzhou University, Fuzhou 350116, China)
出处
《福建工程学院学报》
CAS
2017年第4期307-312,共6页
Journal of Fujian University of Technology
基金
国家自然科学基金项目(51678151)
福建省资助省属高校科研专项项目(JK2015029)
福建省自然科学基金项目(2014J01171)
关键词
T形配钢
型钢混凝土
偏压构件
有限元
T-shaped steel
steel reinforced concrete
eccentric loaded column
finite element
