Design And Analysis Of The High-rise Structure Of Powerlong International Center 3# Building In Yujiapu

With the progress of society and the development of building technology,high-rise buildings and super high-rise buildings gradually increased,which also reflects the overall strength of a country or region to some extent.The high-rise buildings in the early stage are mainly including the reinforced concrete structure,then many structural styles have emerged,including steel frame structure,steel frame-core tube structure,composite frame structure and so on.This paper takes the major structure of the Power Long International Center 3# building as the object of study,and the structure uses the form of concrete-filled steel tubular column frame-reinforced concrete core tub-cantilevered truss structure.Through the analysis of structure system and a series of calculation of the related indicators,we get the corresponding conclusions of the structure to ensure the safety of structure and the normal use and also to provide experience and reference to the similar engineering design and analysis in the future.This paper firstly briefly describes the development of the high-rise building structure at home and abroad and then introduces some typical and famous buildings,at the same time it expounds the stress and construction characteristics of the high-rise building structure.The engineering background of this project is introduced in detail,and the main research contents and methods are presented in this paper.As the main structure of PowerLong International Center 3# building is complex,this paper firstly introduces the selection of structural components.And because the structure has a number of out-of-gauges,this article introduces in detail the situation of the out-of-gauge and the corresponding measures and puts forward its seismic performance objectives according to relevant standard at the same time.Two kinds of finite element software are used to analyze dynamic and static performance of the structure,including the calculation of the period of the structure and the mode of vibration,the ratio of shear and weight,the angle of the displacement of the floor and the shear capacity of the floor.And this article also conducts middle-earthquake checking calculation on the key components of the structure and the comfort checking calculation on the structure under the wind load.All indexes meet the requirements of the relevant specifications,which indicates that the structure can meet the requirements of safety,reliability and normal use.The elastic time history analysis of the structure is carried out by seven time history curves,so as to supplement and check mode-superposition response spectrum method.The calculation results indicate that the elastic time history analysis results are almost the same as the results of mode-superposition response spectrum method and that the average inter layer displacement angle of each time history wave meets the requirement of the specification.Three time history curves are used to analyze elastic and plastic time history of the structure.According to the results,the maximum inter storey displacement angle meets the requirements of seismic resistance,other indicators also meet the specification requirements,and the structure can meet seismic fortification target of No Collapsing in the Strong Earthquake.This paper also introduces three methods of high-rise structure construction simulation,including one-time loading method,approximate simulation method and the precise construction simulation method.Meanwhile this article introduces in detail the shrinkage and creep of concrete,including several prediction models and their calculation methods.We use MIDAS GEN software to simulate the construction process with the main structure being divided into 18 stages and the core tube construction leading the four storey construction to mainly analyze the vertical deformation characteristics.In the components of the deformation we can conclude that the structure deadweight and the external load have the main effect on the deformation and the maximum vertical deformation of the core tube and the outer frame column is 3.14 mm.