CAJ | 학술논문

针对圆中空夹层钢管混凝土轴心受压柱的力学性能，基于纤维模型法，钢管材料的本构关系依次选用5阶段模型、理想弹塑性模型两种，混凝土材料的本构关系依次选用韩林海模型、刘威模型两种，共4种不同的本构关系模型组合；对单调加载过程中圆中空夹层钢管混凝土轴压构件的荷载-变形关系进行计算，与试验结果进行对比分析。结果表明：计算出的荷载-变形关系曲线与试验曲线吻合良好；对钢管本构关系，采用5阶段模型、理想弹塑性模型分别进行纤维模型法计算，二者计算结果基本一致；对混凝土本构关系，采用韩林海模型、刘威模型分别进行纤维模型法计算，前者计算结果吻合更好。
침대원중공협층강관혼응토축심수압주적역학성능，기우섬유모형법，강관재료적본구관계의차선용5계단모형、이상탄소성모형량충，혼응토재료적본구관계의차선용한림해모형、류위모형량충，공4충불동적본구관계모형조합；대단조가재과정중원중공협층강관혼응토축압구건적하재-변형관계진행계산，여시험결과진행대비분석。결과표명：계산출적하재-변형관계곡선여시험곡선문합량호；대강관본구관계，채용5계단모형、이상탄소성모형분별진행섬유모형법계산，이자계산결과기본일치；대혼응토본구관계，채용한림해모형、류위모형분별진행섬유모형법계산，전자계산결과문합경호。
ABSTRACT:For the behavior of concrete-filled double skin steel circular tubular columns under axial loads,five-stage model and ideal elastic-plastic model were used to describe the constitutive relation of steel pipe materials based on fiber model method,as well as Han Linhai model and Liu Wei model were used to descibe the constitutive relation of concrete material.The load-deformation relationship of axial compressed members of concrete-filled double skin steel circular tubular columns under monotonic loading was calculated by four different combinations of constitutive relation models,and the experimental results were compared and analyzed.The results showed that the calculated load-deformation curves were in good agreement with the experimental curve by four different combinations of constitutive relationship models.Five-stage model and ideal elastic-plastic model were used to calculate the constitutive relation of pipe material by fiber model method,both of the results were basically the same.Han Linhai model and Liu Wei model were used to calculate the constitutive relation of concrete by fiber model method,the former calculation results was more precise.