Seismic Behavior Analysis Of The Short-pier Shear Wall Structure With Concealed Steel Column

Following the rapidly economy development of China, the building construction field is also prospering day by day. Nowadays, even there is short-pier shear wall structure system applied for some buildings, which is based on the shear wall and takes advantage of the frame structure, commonly applied for sub-high rise residences. However, this structure system is not so popularized in the area with high requirements of fortification intensity, which is mainly because of the consideration and ideas from many structure engineers, that is, the seismic performance of reinforced concrete structure with good bearing capacity and ductility is better than the he short-pier shear wall structure. The purpose of this disquisition is for integral and component contrast analysis of the seismic performance of the short-pier shear wall structure with reinforcement and non-reinforcement.The skeletons of this thesis are as follows:First,there will be the contrast analysis of the seismic behavior of the short-pier shear wall structure with or without concealed steel column during the elastic-line stage and elastoplasticity stage, the result of which is the seismic behavior of the short-pier shear wall structure with concealed steel column is better than the one. without concealed steel column.Second,there will be the contrast analysis of the capacity of lateral bearing and deformation of the pier wall at different axial compression ratio by the finite element ANSYS software conducted by a monotonic loading simulated test for the non-reinforced short-pier shear wall with flange at different axial compression ratio, the result of which is that on the increase of axial compression ratio, the lateral bearing is rising in the beginning then going down, and trend of the decrease is very apparent; the ductility of the specimen is decreasing in the beginning then increasing , the axial compression ratio 0.6 is much less than the one 0.5, then it is going to be flat. Both of the lateral bearing capacity and ductility of the pier wall at axial compression ratio 0.5 have good performance.Third, there will be the contrast analysis of the capacity of lateral bearing and deformation of the pier wall at different axial compression ratio by the finite element ANSYS software conducted by a monotonic loading simulated test for the non-reinforced short-pier shear wall with end-column at different axial compression ratio, the result of which is that on the increase of axial compression ratio, the lateral bearing is rising in the beginning then going down, and the trend of the decrease is not so obvious; the ductility of the specimen is decreasing in the beginning then increasing , the axial compression ratio 0.7 is much less than the one 0.6, then it is going to be again flat . Both of the lateral bearing and ductility of the pier wall at axial compression ratio 0.5 and 0.6 have good performance.Forth ,there will be the contrast analysis of the capacity of lateral bearing and deformation of the pier wall at different axial compression ratio by the finite element ANSYS software conducted by a monotonic loading simulated test for the reinforced short-pier shear wall with flange at different axial compression ratio, the result of which is that on the increase of axial compression ratio, the lateral bearing is rising in the beginning then going down, and the trend of the decrease is not so obvious; the ductility of the specimen is decreasing in the beginning then increasing , the curve is rather steep. Both of the lateral bearing and ductility of the pier wall at axial compression ratio 0.5 have good performance.Fifth, the contrast analysis of the capacity of lateral bearing and deformation of the aforementioned several models at the same axial compression ratio is also conducted, the result of which is that the short-pier shear wall with concealed steel column can improve the capacity of lateral bearing and deformation of the component, especially improvement for the component lateral bearing capacity is really apparent; Replace the flange with end-column can also apparently improve the ductility of the short-pier shear wall.