Performance Study On Aseismic Analysis And Wind-resistance Of Chongbin·baoli International Square

Along with rapid increase of high-rise constructions in our country, the frame-corewall structure with strengthened story system has obtained more and more applications in the practical project.The establishment of ultrahigh layer frame–corewall structure system with strengthened stories always meets some problems; the research on effects of strengthened stories on this kind of structure system's stress performance to present's engineering design has the very vital significance. This thesis unified the Chongbing Baoli international square project to exemplify the frame–corewall with strengthened stories structure system's earthquake resistance wind resistant performance influence to carry on the analysis and the research.The gross height of Chongbing Baoli international square is 286.80m.After completing, it will be the tallest building in southwest of China .The Chongbing Baoli international square has altogether 58 stories, according to the building function request, the main structure uses the reinforced concrete frame - corewall structure. In order to reduce the level the angle of displacement and the apex displacement,sets cantilever truss at the meters high asylum layer on the 29th an the 44th store. This project located at 6 agnitude earthquake area, In order to understand earthquake resistance wind resistant performance of the structure after setting with strengthened stories, the performance of the structure after setting with strengthened stories must be analyzed.The whole Chongbing Baoli international square computation model is established in this article, and so on structure performance, period, displacement has carried on the analysis comparison by SATWE and the ETABS two procedures. Regarding stress more complex spots story with outriggers, simultaneously uses ETABS and SAP2000 two procedures to carry on the checking calculation separately.Based wind-tunnel tests,the paper compares the wind loads calculated according to Code and wind loads form wind-tunnel test in the two cases of without affecting the surrounding architecture and with the surrounding construction. The results show that: in this kind of wind load controlling ultra-high-rise building design, the results of wind tunnel tests can not be ignored.Four operating case of stories with outriggers of different quantity and position of of Chongbing Baoli international square are studied .Through the analysis to 4 kind of different organization plans, the impacts of the position and the quantity of strengthened stories on the structure period, the displacement and the stress performance are analyzed, the problem that setting strengthened stories may casuse the neribour stories become relatively weaker were focused on and analyzed.On the basis of the study ,this paper gives some advices on the reasonable choice of rigidity of strengthened stories.