Study On Seismic Performance Of RC Frame Shear Wall Structure Considering Performance Target

The RC frame shear wall structure has a very wide application in engineering,and it exerts two anti-seismic defense functions under the action of earthquake.Compared with traditional seismic design methods,performance-based seismic design methods are gradually applied and promoted in engineering with their unique advantages.There are few literatures on the impact of performance objectives on the seismic performance of RC frame shear wall structures,but it is necessary and important to study the impact of performance targets on the structure.This not only provides a theoretical basis for scientific research,but also provides a reference for practical engineering.value.A 30-layer RC frame shear wall structure with performance target C is designed by PKPM software.The SATWE is used for calculation and analysis,and the indicators and results of the model are obtained.The results show that all indicators are within the specification limits and meet the requirements of the specification.Elastoplastic time history analysis and static pushover analysis can also provide reference value for structural analysis.Through the analysis of these two modules,structural correlation results are obtained and used as a reference.In order to explore the influence of performance targets on the seismic performance of RC frame shear wall structure,the model with performance target C is the basic model,and two comparison models with performance targets B and D are established.According to SATWE analysis,the higher the performance target,the higher the natural vibration period of the structure,the lower the minimum shear-to-weight ratio,the larger the maximum interlayer displacement angle,the mass ratio,the minimum stiffness ratio,and the minimum floor shear of the three models with different performance targets.The bearing capacity ratio,natural vibration period,effective mass coefficient,minimum shear-to-weight ratio,maximum interlayer displacement angle,maximum displacement ratio and maximum interlayer displacement ratio all meet the requirements of the specification.Through the static pushover analysis,the plastic hinge distribution and load-displacement curves of the three models are obtained,so as to know the damage degree,bearing capacity and ultimate displacement of different component types of different performance target models,and then let the performance target cut the RC frame.The display of theinfluence of the wall structure is concrete.The results show that the higher the performance target(B>C>D),the fewer the number of plastic hinges on the frame column in the limit state,the more the number of plastic hinges on the shear wall,the less the total number of plastic hinges;the higher the performance target,the limit The larger the load,the stronger the corresponding bearing capacity,the smaller the ultimate displacement,and the weaker the corresponding ductility.