Analysis Of Mechanical Properties Of Barrel Structure With Inclined Column

With the development of social economy and the progress of science and technology,with the perfection and progress of structural design theory of super high-rise buildings,the imagination space of New Generation Architects is broadened.With its simple and non-monotonous facade,the inclined column structure has brought powerful visual impact,and the high utilization rate of building space has gained the favor of more and more architects and owners.In this paper,the influence of PKPM series and MIDAS on the inclined column in the office building of Liangjiang International Headquarters in Chengdu is analyzed and studied.At first,the structure layout of three kinds of bottom outer tube frame columns(external expansion,straight column,inner shrinkage)is used to compare the structure performance index and the structure member internal force distribution.The results show that the overall performance of the structure arrangement of the three bottom outer barrel columns is basically the same.Then the structure is compared and analyzed by establishing 11 models with different tilt angles of the bottom outer barrel column.It is found that the self-vibration period of the structure increases with the increase of the angle of the inside of the bottom wing frame column,and the lateral stiffness of the structure also increases with the increase of the angle of the inside of the inclined column.The shear force and bending moment of the outer cylinder decreases with the increase of the angle in the bottom wing frame column,that is,the shear force and bending moment of the inner cylinder increases with the increase of the angle in the bottom wing frame column.The conclusion is the opposite when the bottom wing column is extended.Finally,the structure is designed in this paper,and the nonlinear dynamic ElastoPlastic time history of the structure model is analyzed by using SATWE,MIDAS and EPDA.The analysis shows that the overall performance index of the structure can meet the requirements of high regulation.The outer cylinder conversion column and inclined column of the structure are in an elastic state.According to the calculation results,the strengthening measures of seismic structure are put forward.