Influence Analysis Of Multi-parameter Seismic Performance Of RC Frame Structure

At home and abroad,there have been many achievements in the research of RC frame structure.The RC frame structure is still an irreplaceable market in the current practical engineering.It has certain significance and value to analyze the seismic performance of RC frame structure.Floor slabs are important components in RC frame structures,and different slab thicknesses have an impact on structural performance.In the specification,the axial compression ratios of different seismic grade structures are limited.Within the scope of the specification,there are differences in seismic performance of structures under different axial compression ratios.Performance-based design has been deeply researched and practiced abroad.Although domestic research started late,the degree of emphasis and recognition have deepened.A 10-layer RC frame structure was built using PKPM software.For the convenience of research,the structural form is “Jiugongge” model.The model plate thickness is 120 mm,the side column axial compression ratio is 0.6,and the performance target is C.Taking this as the basic model,three sets of six comparison models were obtained by changing the plate thickness,the axial compression ratio and the performance target.The thickness of the two contrast models with the thickness of the plate is 100 and 140 mm respectively.The axial compression ratios of the two comparative models with the parameters of the axial compression ratio are 0.5 and 0.7 respectively.The performance objectives of the two comparative models with the parameters of the performance target are respectively For B and D.The model is analyzed and analyzed by the static push function in PKPM software,and the results of limit state plastic hinge analysis and load-displacement curve are obtained.The results show that with the increase of the plate thickness,the ultimate load of the structure increases,the ultimate displacement decreases,and the results of the two parameters of the axial compression ratio and the performance target have the same conclusion.The larger the plate thickness and the axial compression ratio,the larger the natural vibration period of the structure,the smaller the minimum shear-to-weight ratio,the larger the maximum interlayer displacement angle,and the smaller the weight-to-weight ratio.The higher the performance goal,the higher the amount of reinforcement and the fewer plastic hinges.The effects of plate thickness,axial compression ratio and performance target on the seismic performance of the structure are compared.The results show that the influence of three parameters on the seismic performance of the structure is performance target > plate thickness > axial compression ratio.Comparing the different seismic grade models,it is found that as the seismic level increases,the ultimate load and displacement of the structure are improved.