Seismic Analysis On SRC Frame-RC Tube Structure With Steel Arch Transfer Stories

In recent decades, especially after entering the 21 st century, with the development of society, people for the requirements of architectural function and architectural style and building structure become more and more diversified. Conversion of the traditional beam structure in the application by many factors restrict, and for tube structure mixed strip of arch transfer floor boxes, the structure performance is different from the traditional beam transfer structure, Based on this, this paper strip hybrid arch transfer floor frame tube structure, study the relevant content on seismic performance.In this paper, the research object is a 28-story-tall and 89.5-metre-high SRC frame-RC tube structure with steel arch transfer story. Using ETABS establish different upper and lower chord line stiffness ratio? and different height of the steel truss transfer story. A case study was carried out by means of the mode decomposition response spectrum analysis. The influence of the two variables on the seismic performance of the structure and its influence law were studied.The transform floor storey of 4m, stiffness of upper and lower chords of the line than the beta ? is 2.18 model example for three seismic waves under the action of the elastic time history analysis, this method to get the data and the previously described the spectrum method to get data of analysis and comparisonThe research results showed that: Upper and lower chords of the line rigidity than the beta value is small conversion layer structure with low rigidity, the conversion layer stiffness contribution than the beta value is larger on the conversion layer stiffness with small. Transform stiffness with the increase of the conversion layer gradually weakened layer rigidity and structure as a whole; display data obtained by the two methods, Two calculation methods of data results, the calculation results than the smaller; applied to practical engineering when, should be based on project, choose the right and upper and lower chord rod line stiffness ratio.