Seismic Performance Evaluation Study Of RC Frame-Shear Wall Structures Based On Fiber Model

With the needs of human social development, the basic seismic fortification goal of "No Damage with Frequently Occurred Earthquakes, Repairable with Fortification Intensity Earthquakes and No Collapse with Rare Occurred Earthquakes" gradually began to a fortified targets more detailed seismic performance-based design theory, which is a hotspot of research on structural seismic design theory at home and abroad. Based on the above research background, the article take the elastic-plastic fiber model of frame shear wall structure as the research object, using the Perform-3D software to do elastic-plastic time history analysis under the strong earthquakes. The study compared the influence of different coupling beams on the hysteretic energy dissipation of structure, of demand capacity ratio, interstorey drift, the base shear etc, analyzed the structure of the plastic yield mechanism and evaluated the seismic performance of structure based on the overall struture and the component. The specific research work are as follows:(1) Designing three RC frame-shear wall structure model, even the coupling beam span ratio of the three models are different. Elastoplastic model is established in Perfom-3D while the choice of SAP2000 finite element software and structural design software YJK calculate structural vibration periods.(2) Downloading 20 seismic waves in the database of Pacific Earthquake Engineering Research Center, and screening five natural waves and two artificial waves. Then the elastic time history analysis under frequently occurred earthquakes is carried out in the YJK software to determine whether the selected seismic wave meets the requirements of the specification.(3) Doing elastic plastic time history analysis with structure under rare earthquake by using Perform-3D software. Comparison of different coupling beams on the hysteretic energy dissipation of structure, of demand capacity ratio, interstorey drift, the base shear etc. Analysis of the structure of the plastic yield mechanism and the main components of the damage state. Compared the seismic performance evaluation results of structure based on the overall struture and the component.