CAJ | 학술논문

为研究钢管再生混凝土短柱轴心受压力学性能，以试验为基础，利用 ABAQUS 建立非线性有限元分析模型，模拟试验实测荷载-轴向应变曲线，验证有限元分析模型的有效性。以再生混凝土强度、钢管壁厚、钢材强度及再生粗骨料取代率为参数，设计5个钢管再生混凝土轴压短柱进行分析，建模时考虑了钢管对核心再生混凝土的约束作用，分析各参数对试件荷载-轴向应变曲线的影响。研究表明：随再生混凝土强度的提高，钢管壁厚的增加，钢材强度的增大，能有效增强钢管再生混凝土短柱的极限承载力和变形能力。
위연구강관재생혼응토단주축심수압역학성능，이시험위기출，이용 ABAQUS 건립비선성유한원분석모형，모의시험실측하재-축향응변곡선，험증유한원분석모형적유효성。이재생혼응토강도、강관벽후、강재강도급재생조골료취대솔위삼수，설계5개강관재생혼응토축압단주진행분석，건모시고필료강관대핵심재생혼응토적약속작용，분석각삼수대시건하재-축향응변곡선적영향。연구표명：수재생혼응토강도적제고，강관벽후적증가，강재강도적증대，능유효증강강관재생혼응토단주적겁한승재력화변형능력。
To study the mechanical performance of the recycled aggregate concrete-filled steel tube (RACFST)short columns under axial compression,the nonlinear finite element models are built with the analytical software ABAQUS on the basis of tests.After the comparison of test results,the feasibility of the nonlinear finite element models are validated. The analyses of 5 RACFST short columns are carried out based on such the parameters as the recycled aggregate concrete strength,the wall thickness and yield strength of the steel tube,as well as the replacement ratio of the recycled aggre-gate.The constraint effect of the steel tube on core concrete is discussed when building the models,and the effect of each parameter on the loading-axial strain curve of specimens is also discussed.The research results show that the ultimate bearing capacity and deformation capacity of RACFST short columns can be effectively improved with the increasing of the concrete strength,and the wall thickness and yield strength of the steel tube.