Structural design of core tube retraction with inclined walls of east Tower of Xuzhou Central International Square
With the rise of the floor,the function of the building changes,and the architectural design needs to reduce the size of the core tube.According to the existing engineering experience,there are several common methods to reduce the size of core tube.The east Tower of Xuzhou Central International Square adopts inclined wall to realize the retraction of core tube.This method makes the mechanical performance of the structure and related components have certain particularity.Relevant structural layout was adopted in structural design and the mechanical performance of relevant components was studied,mainly including floor-slabs,beams,buttress walls and wall-limbs and coupling-beams of the outer wall of the core tube,and the design method of relevant components and structures was proposed according to the mechanical performance.The results show that after reasonable design,the core tube structure with inclined wall retraction can satisfy the requirements in terms of lateral stiffness,deformation and other indicators,as well as the seismic performance under rare earthquake.Inclined wall retraction is a reasonable structural method.