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钢管混凝土剪力墙以其侧向刚度大、承载力高及多道抗震防线等特点,常作为主要抗侧力结构构件被广泛应用于高层建筑中。为研究钢管混凝土剪力墙中钢管混凝土边框或暗柱与剪力墙竖向接合面的抗剪机理以及该竖向接合面抗剪承载力计算方法,基于ABAQUS软件对钢管混凝土剪力墙竖向接合面进行有限元分析,同时考虑钢管混凝土与剪力墙之间有无连接的影响。结果表明:该竖向接合面有无连接对两者脱开裂缝宽度影响显著。在以往试验研究基础上,提出了钢管混凝土剪力墙竖向接合面抗剪承载力计算模型,并对其抗剪机理进行分析,依据该计算模型对19个接合面和7个墙体试件抗剪承载力进行计算,所得结果与试验结果吻合较好,能够合理反映钢管混凝土剪力墙的实际工作形态,对其抗剪性能的计算分析精度高、实用性强。
Due to its large lateral stiffness, high bearing capacity and multi-channel seismic defense, CFST shear walls are often used as the main anti-side-force structural members in high-rise buildings. In order to study the shear mechanism of the vertical joint between the concrete-filled steel tube (CFST) frame and the shear wall in the CFST shear wall and the calculation method of the shear capacity of the vertical joint, the ABAQUS software is used to calculate the shear strength of the CFST The joint surface is analyzed by finite element method, taking into account the influence of the connection between the concrete filled steel tube and the shear wall. The results show that whether the vertical joints are connected or not has a significant effect on the width of the cracks. Based on the previous experimental research, the calculation model of shear strength of vertical joint of concrete-filled steel tubular shear wall is proposed and its shear mechanism is analyzed. Based on the calculation model, 19 joint surfaces and 7 wall specimens The calculated results of shear strength are in good agreement with the experimental ones, which can reasonably reflect the actual working form of CFST shear wall. The calculation and analysis of the shear resistance of the concrete filled steel tube are of high precision and practicability.