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运用ABAQUS非线性有限元分析软件,分别以普通钢筋混凝土核心筒结构和带混合暗支撑的钢筋混凝土核心筒为研究对象,着重分析核心筒中剪力滞后的分布、发展规律及影响因素;探讨了核心筒的角柱、连梁、分布筋以及暗支撑对其剪力滞后效应的影响;对比了带混合暗支撑核心筒与普通核心筒的剪力滞后程度.结果表明:与普通筒体相比,带混合暗支撑核心筒的承载力和变形能力都得到大幅提高,表出较好的整体性,剪力滞后效应得到有效的控制.
By using ABAQUS nonlinear finite element analysis software, the core structure of reinforced concrete core tube and hybrid reinforced concrete core tube with mixed dark support are taken as research objects respectively. The distribution, development law and influencing factors of shear lag in core tube are analyzed emphatically. The influence of the angle column, the connecting beam, the distributing rib and the dark support on the shear lag effect of the tube was compared, and the shear lag of the tube with the mixed dark supporting core and the common core tube was contrasted.The results showed that compared with the ordinary tube, The bearing capacity and deformability of the hybrid dark-supported core tube have been greatly improved, showing a better overall, effective control of shear lag effect.