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设计了一种屈曲约束支撑与混凝土框架连接的T型连接节点,采用有限元分析软件ABAQUS建立有限元模型,并利用试验结果验证了有限元分析结果的准确性。在此基础上,考察了采用屈曲约束支撑混凝土框架与无支撑混凝土框架的受力状况以及新型连接节点的工作性能。分析结果表明:新型T型钢锚固型连接节点稳定可靠,传力明确;屈曲约束支撑能显著改善混凝土框架的受力状况和工作性能,提高混凝土框架的抗侧刚度、承载能力和耗能能力等。
A T-type joint with flexural restraint brace is designed and connected with concrete frame. The finite element model ABAQUS is used to establish the finite element model. The experimental results verify the accuracy of the finite element analysis. On this basis, the stress conditions of the flexurally restrained concrete frame and the unsupported concrete frame and the working performance of the new type of joint are investigated. The results show that the anchorage connection of the new T-shaped steel is stable and reliable, and the force transmission is clear. The buckling restraint support can significantly improve the stress and workability of the concrete frame, and improve the lateral stiffness, bearing capacity and energy dissipation capacity of the concrete frame.