CAJ | 학술논문

通过钢管混凝土单圆管拱架模型的面内加载试验，基于试验结果对拱架模型的变形、应变、承载特性及可缩节点增阻规律进行了研究。试验结果表明：由于钢管和混凝土协同工作，钢管混凝土支架具有较好的弹塑性和承载能力；支架初始缺陷或局部弱化往往是造成支架失稳破坏的重要原因；可缩节点增阻曲线可以分为3阶段，支架滑移后承载力出现波动，应根据现场监测适时对可缩节点进行紧固增阻。最后采用 ABAQUS 有限元软件对拱架模型的承载和变形特性进行了模拟分析，计算结果与试验值比较接近。
통과강관혼응토단원관공가모형적면내가재시험，기우시험결과대공가모형적변형、응변、승재특성급가축절점증조규률진행료연구。시험결과표명：유우강관화혼응토협동공작，강관혼응토지가구유교호적탄소성화승재능력；지가초시결함혹국부약화왕왕시조성지가실은파배적중요원인；가축절점증조곡선가이분위3계단，지가활이후승재력출현파동，응근거현장감측괄시대가축절점진행긴고증조。최후채용 ABAQUS 유한원연건대공가모형적승재화변형특성진행료모의분석，계산결과여시험치비교접근。
Experiments on the concrete-filled steel tubular (CFST) support under symmetrical and un-symmetrical in-plane loadings have been carried out. Based on the experimental results, this paper stud-ies the deformation, strain, the increasing resistance law of contractible joint and ultimate bearing ca-pacity of CFST arch support. The results show that the CFST support has good elastoplasticity and car-rying capacity due to the cooperative work of steel and concrete. Initial imperfection or partial weaken-ing of the support is a major reason for the destruction of the support. The increasing resistance curve of contractible joint can be divided into three stages. The contractible joints should be tightened in a timely manner in accordance with the field monitoring for the bearing capacity fluctuated after slip. Finally, the characteristics of bearing and deformation of CFST arch support are analyzed with ABAQUS software, and the simulated results are fairly close to the experimental results.