Analysis Of Seismic Response Of A Large Chassis Twin Towers Structure With Transfer Story

With the progress of science and technology and the development of the times,high-rise buildings have been developed rapidly.This diversification requirements,set a different column or wall in the vertical position of the structure,so the structure in the upper space lower small space is arranged in the conversion layer.The conversion layer is the building of key parts of the force,in practical engineering,because the conversion layer in the form of a variety of treatment,often according to the experience of using,however different forms of transformations for seismic response and seismic performance of the overall structure has a great influence.In this paper,the large chassis Twin Towers connecting structure with transfer floor is taken as the object of study.Theoretical analysis and numerical simulation are used as the main research work.According to the shaking table test model and the Xu Qinghai thesis,3D finite element analysis model is established by ETABS numerical simulation,the numerical simulation results and experimental results are compared and validated by using the model of this paper.The vertical position of the structural transfer story in the large chassis Twin Towers joint structure is adjusted,and the seismic analysis of the structure model is carried out.Comparison of different position conversion layer structure period and the vibration type,base shear structure,the layers of seismic force,impact structure interlayer displacement angle and the structure of the special parts of the internal force and so on,and offer a reference to structure design.By adjusting the structural form of the structural transfer story,six large chassis Twin Towers connecting models with transfer storey are established,and the six models are three single-layer transition truss models and three laminated transition truss models respectively.Modal analysis and elastic time history analysis of the established structural model are carried out,and a better model is selected to make the structure more reasonable and provide a reference for the relevant structural design.The conversion model of laminated cross truss(truss by cross conversion to the adjacent position of the extension of a cross)is a good selection of Twin Towers and large chassis floor truss form theconnecting structure with conversion layer,and the best set in three or four layers.