Abstract
The Kunshan urban investment project includes 1 office tower, 4 high-rise residential buildings and 1 high-rise commercial building. Each monomer shares a large basement chassis, a total of three basement floors. This design is the second phase (5# super high-rise and corresponding basement).The height of the structure is more than 140 meters, which is a concrete-filled steel tubular frame + core tube system. The selection and structure of the structural system are analyzed, and the mechanical performance of the structure is verified through calculation and analysis.
Highlights
The project is located in the 7 degree of seismic fortification intensity area, belongs to the standard fortification class building, should be 7 degrees of seismic calculation and seismic measures
As the main lateral force resistance system, the core tube provides resistance to wind load and horizontal earthquake action, and bears the additional torsion effect caused by the incoincidence of the center of mass and the center of stiffness
In order not to affect the use function of the building, this project does not set expansion joints, according to the "Concrete Structure Design Code" [2] (GB50010-2010) using every 30m ~ 40m interval to set up shrinkage postpouring belt construction measures, reduce the early concrete shrinkage of the adverse impact on the structure.The width of the post-pouring strip is 0.8m.Shrinkage post pouring belt on both sides of the members of the concrete pouring for two months, most of the concrete shrinkage after the completion of supplementary pouring.The non-shrinkage concrete with strength grade higher than that of the two side members is used for the supplementary casting of the post cast belt
Summary
The construction site of the project is located in Kunshan City, Jiangsu Province. The proposed site is located on Qianjin West Road to the north, Louchuang Road to the south and Sichang Road to the east.Zu Chong Road to the west.The project includes one office tower, four residential towers and one commercial tower.Each unit shares the basement, which has three floors in total.This design is 5# super high-rise office and corresponding basement. The design life of the project is 50 years, the safety level of the building structure is grade 2, the fire level of the building structure is grade 1[1], and the design level of the foundation foundation is grade a.According to the "Code for Seismic Design of Buildings" (GB50011-2010) (2016 edition) [2], the aseismic group 1 in the area where. The load refers to Load code for the design of building structures[3]
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