The Effect Of Seismic Behavior On SRC Frame & RC Core-Wall In High Seismic Intensity Regions Based On The Transformation Of Rigidity Ratio

The SRC frame & RC core-wall structure is widely used in high seismic intensity regions because of its well effect of seismic behavior, especially for high buildings. According to the experiments and damages in the past, the aseismic wall crazes while the frame still be at elastic stage due to the rigidity difference for the structure composed of steel reinforced concrete frame and reinforced concrete wall. In high seismic intensity regions, there must be structures with higher aseismic capabilities. Therefore, some designing indexes have important effects on the whole deformation of structure, such as rigidity ratio, deformation coordination and ultimate displacement of high buildings. The paper mainly studied the deformation law and internal force transformation which are related to the designing indexes.In this paper, taking a SRC frame & RC core-wall structure as the background, the structure deformation and internal force transformation are analyzed through finite element analysis based on PKPM software and SATWE model. After rigidity equivalent replacement, the plane rigidity can be changed and the SRC frame can be equal to the RC frame. Furthermore, the structure deformation and internal force transformation of these two structures are discussed. In the end, the internal force distribution and deformation of the structure caused by the transformation of designing indexes are studied by changing the vertical rigidity.As a result, no matter what kind of structure it is, the transformation of plane rigidity and vertical one surely have effect on the internal force distribution and deformation of the structure. The average story displacement of the SRC-frame & RC core-wall is bigger than the one of RC-frame & RC core-wall on the frequent earthquake condition. What's more, under the first vibration type, the front structure is provided with longer vibration circle time and smaller maximal story displacement angle. On the other hand, the distribution of the average story displacement and story shearing force are similar between the front structure and the back one. By changing the vertical rigidity of the SRC-frame & RC core-wall, moves upwards as the transition story rises. However, the ultimate story displacement angle accords with the criterion all along and there is no break in the distribution of shearing force and story displacement near the transition story.