Seismic Performance Analysis Of Assembled RCS Hybrid Frame Structure

The RCS(Reinforced concrete column-steel beam)hybrid frame structure is a new structure which combines the advantages of reinforced concrete structure and steel structure.The use of RCS hybrid frame structure,not only has the advantages of ordinary RCS hybrid structure,but also has the advantages of fast construction,high quality and environmental protection,which is very consistent with the demand of industrialization of China's construction industry.Therefore,it is important to study the structure of RCS The meaning of.At present,there are many researches on the RCS hybrid frame nodes at home and abroad,and the research results are relatively mature.However,the research on the whole structure is very few,and the specification of this structure is very few.In this paper,a set of plane frame and overall frame software model with different seismic rating are established.The static performance analysis of the RCS hybrid frame structure is analyzed by static analysis,response spectrum analysis and elasto-plastic time history analysis.The results show that: 1)According to the previous test basis,Way to verify that the use of non-linear connection unit can simulate the actual steel beam splicing node.2)the establishment of seismic intensity of 6degrees 0.05 g,7 degrees 0.10 g and 8 degrees 0.20 g when the assembly of RCS mixed frame,cut out the middle of a plane frame.The change of the plastic hinge structure,the lateral displacement angle and the displacement curve of the top displacement of the structure are analyzed by changing the area of the cross section of the frame column by changing the bending moment increasing coefficient of different values.Comprehensive performance,economic and other factors,it is recommended that the recommended value of the increase of the bending moment of the column is 1.6,1.8 and 2.0.3 at 6 degrees 0.05 g,7 degrees 0.10 g and 8 degrees 0.20 g respectively3)7 different beam-to-column stiffness ratio of the program(column cross-sectional size of the same steel beam cross-section).Through the pushover analysis,the performance curves,displacement angles and yield patterns of the structures under different line stiffness ratios are compared.The results show that when the line stiffness is within the range of 0.25 ~ 0.36,the structure has good seismic performance and anti-lateral ability.4)The top-level displacement curve,the interlayer displacement angle,the base shear force and the hysteresis curve are analyzed by the rare time-history analysis of the assembled RCS hybrid frame structure under three different seismic waves.The results show that the RCS frame structure with the recommended bending moment increasing coefficient has good seismic performance.