摘要
为了研究构件在不同混凝土强度和试件尺寸下的力学性能,进行了两根GFRP管-混凝土-钢管组合柱(DSTC)轴压构件的试验研究,并运用非线性有限元分析软件ANSYS,在正确建立分析模型的基础上,对8个轴压构件的荷载-应变曲线及极限承载力变化趋势进行了模拟分析.结果表明:提高混凝土强度等级时,DSTC的力学性能得到了显著提高;当试件尺寸不同时,尺寸效应对不同混凝土强度等级的DSTC力学性能的影响程度不同.
In order to study the mechanical properties of components under different concrete strength and specimen size, the experimental study for two axial compression components of GFRP-concrete-steel tubular composite column （DSTC） was carded out. On the basis of establishing the analysis model, the load-strain curves and the change trend of bearing capacity for 8 axial compression components were simulated and analyzed with the nonlinear finite element analysis software ANSYS. The results show that when the strength grade of concrete gets improved, the mechanical properties of DSTC were significantly enhanced. When the size of specimens is different, the size effect has a certain influence on the mechanical properties of DSTC with different strength grades.
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2017年第3期346-351,共6页
Journal of Shenyang University of Technology
基金
国家自然科学基金资助项目(51308028)
黑龙江省教育厅科学技术研究计划项目(12543023)
