摘 要 钢-混凝土混合结构体系不仅具有良好的抗震性能，而且能够充分发挥不同材料的优点，因此，在高层建筑中钢-混凝土混合结构体系被广泛地采用。钢-混凝土混合结构体系中外部框架钢梁与混凝土筒体之间的连接部位涉及内外子结构间的协同工作能力，此类节点的抗震性能直接关系到混合结构在地震作用下的整体受力性能。钢梁-混凝土墙混合节点受力复杂并且在地震作用下节点易遭破坏，为混合结构的抗震薄弱位置。目前，对钢梁与混凝土墙混合节点抗震性能的研究尚不够全面。 本文主要针对混合结构中广泛应用的钢梁-混凝土墙混合节点在不同连接方式下的抗震性能进行研究。主要完成以下内容： （1）利用ABAQUS软件对混合节点（一个刚性连接和一个铰性连接）的梁端在反复循环荷载作用下进行有限元分析，与已有试验结果进行对比，其承载力与变形与试验结果较吻合，验证了节点非线性数值模拟的有效性。 （2）对混合节点进行参数分析，包括了剪力墙轴压比、钢梁高跨比及螺栓直径等参数对混合节点在反复循环荷载作用下承载力、滞回性能、刚度退化及延性等影响。 （3）在不同连接方式下，通过骨架曲线、延性、等效粘滞阻尼系数及能量耗散系数等方面对刚接和铰接节点的抗震性能进行对比评价。 通过分析研究，得出以下主要结论：从总体上来说，刚接混合节点的抗剪承载力比铰接混合节点抗剪承载力高，但刚接节点的延性、等效粘滞阻尼系数及能量耗散系数比铰接节点低；剪力墙轴压比对内置型钢柱的混合节点受力性能影响较小，且在暗牛腿翼缘两侧的混凝土承受压应力较小，说明设计此类节点的剪力墙的牛腿可以按悬臂梁设计；在一定的范围内，刚接节点和铰接节点抗震能力都随着钢梁高跨比的减小而降低；随着螺栓直径增加，刚接节点的抗剪承载力提高但没有铰接节点提高的显著。 本文分析了钢梁-混凝土墙混合节点在循环荷载作用下的受力性能，得出的结论可为钢梁-混凝土墙混合节点设计理论和方法的研究提供了基础对比数据和参考依据。 关 键 词：钢梁-混凝土墙节点；刚性连接；铰性连接；抗震性能；非线性分析 研究类型：应用研究

ABSTRACT The steel-concrete hybrid structure system not only has good seismic performance, but also makes full use of the advantages of different materials. Therefore, steel-concrete hybrid structure system has been widely used in the high-rise building. The joints of the external frame steel beam and reinforced concrete core wall have an influence on the interoperability of inside substructure and outside substructure in steel-concrete hybrid structure system,and the seismic performances of the joints have a direct on the whole mechanical performance of the hybrid structure in earthquake, act as weak seismic location of hybrid structure. At present, On seismic performance of sthe steel beam and concrete wall hybrid joints research is not comprehensive. This article mainly study the seismic behaviors of the hybrid joints of steel beam and concrete wall which is widely used in the hybrid structure. This paper complete the following content: (1)Used ABAQUS software finite element analysis for mixed joints (a rigid connection and a hinged connection) of the end of beam which was under cyclic loading, then compared with existing experimental results, its bearing capacity and deformation fit well with experimental results, to verify the effectiveness of joints’s the nonlinear numerical simulation. (2)Analyzed the influence of the parameter of mixed joints, including the ratio of shear wall and axial compress, depth-span ratio, the bolt diameter and so on, to the bearing capacity, stiffness degradation, ductility of mixed joints under repeated cycle load. (3)Through the skeleton curve, ductility, equivalent viscous damping coefficient and energy dissipation coefficient to Evaluate the seismic performance of rigid connection and hinged connection in different connection modes. Through analysis and study, the following main conclusions: overall, the rigid connection of hybrid joints has more advantages in the shear bearing capacity than hinged connection of hybrid joints, but the ductility of the joints, equivalent viscous damping coefficient and energy dissipation coefficient is lower than the hinge connection; the axial compression ratio of shear wall has little influence on the joints of embeded SRC columns, and the both sides concrete in embedded bracket flange is under less pressure, account for the shear walls root of this kind joints can be designed by cantilever beam; Within a certain range of the rigid joints and hinged joints reduce the seismic ability with the decrease of the depth-span ratio ; the bearing capacity of rigid joints has improving with the increasing of bolt diameter, but the degree compare with hinged joints is not signifficant . This paper analyzes the structural behavior of the steel beam-concrete wall mixed joints under cyclic loading, the conclusion for the steel beam-concrete wall to the study the design theory and method of hybrid joints provides the correlation basis data and references. Keywords: Steel-concrete wall joints; Rigid connection; Hinged connection; Seismic behaviors; Nonlinear analysis Thesis : Application Research