Study On Seismic Behavior Of Reinforced Concrete Frame With Special-shaped Columns

The reinforced concrete special-shaped column structural system is a unique building system in China.It was gradually formed during the large-scale development of China’s urban construction industry.Its advantages are outstanding,and it can meet people’s aesthetic improvement and furniture layout.And the beautiful appearance of the interior.In 2006,China issued the "Technical Specification for Concrete Special-Shaped Column Structures".With vigorous promotion and implementation in architecture,this structure has entered a new wave of climaxes.in particular,the force-transmitting relationship of the overall structure of the special-shaped column frames is more complex than the traditional single-members,and may be affected more by the earthquake.Impact,therefore,the study of its anti-seismic performance,from the macro control and understanding has important research value.Based on the ABAQUS finite element analysis software,this article will study the following three aspects:1.The research status and relevant theories of reinforced concrete special-shaped columns at home and abroad are summarized and summarized.2.Through ABAQUS finite element software,reinforced concrete cross-shaped columns and T-shaped columns were established and their seismic performance was simulated.The comparison with existing tests verified the correctness of the model and laid the foundation for the smooth development of follow-up content.3.The research parameters were extended to establish 10 cross-shaped columns,10T-shaped columns.The strength,reinforcement ratio,and axial compression of different concretes were analyzed under low-cycle repeated loading.The ratio of its shear capacity,energy dissipation capacity,deformation capacity and stiffness degradation ability.4.Based on this,a ten-inch two-span reinforced concrete frame structure was established,and the strength,reinforcement ratio,and axial-pressure ratio of different concretes were analyzed under low-cycle cyclic loading for their shear capacity and energy dissipation capacity.Deformation ability and the effect of stiffness degradation,It laid the foundation for the research and design of the seismic performance of the structure.