Analysis Of The Influence On Cantilever Type And Connection Form Of Frame-Tube Structure

Frame-tube structure with strengthened story has been widely applied in actual engineering in the past few years. However, the study of different connection format between outtriggers in strengthened story and frame-tube structure under earthquake impacting connecting components internal force and dynamic property is still lacking. Therefore, the different connection format between outtriggers in strengthened story and frame-tube structure has important practical significance influence tube structure.This paper uses 51 layer of steel reinforced concrete high-rise frame- core tube structure engineering instance in Guangzhou as an example and generates the model on the location and quantity of the strengthened story with the help of Finite Element Analysis SoftWare ETABS and SATWE. After modeling, this paper analyzes the structure elastic-plastic deformation and the shear force between the layers among different models under earthquake action and picks up the optimal model finally. And accordingly different outrigger frame column respectively rigidly connected, semi- rigid connection, articulated three connection forms again modeling analysis of internal forces under earthquake plastic deformation of the structural member of each model were compared.We can conclude that in the horizontal earthquake, when other conditions are constant with the increase in the number of reinforcing layer is set, since the vibration period of the structure and the maximum displacement angle are reduced. With the reinforcing layer is disposed position improved shear layer between the smaller structural changes. The connection type outriggers and frame column structure between the elastoplastic deformation is not obvious. However, with the increasing connection stiffness, the effect on the structure elastoplastic deformation is slightly more obvious. V-shaped horizontal outriggers performs better than the V-shaped outriggers on the reducing the plastic deformation structure. Outrigger program impact than the V-shaped Outrigger program for the moment, shear, axial force and the interlayer shear structural members such as more obvious.